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Dell XPS 13 9350 Connecting external monitor via thunderbolt port

Q: Dell XPS 13 9350 Connecting external monitor via thunderbolt port

I bought a Dell XPS 13 9350 in December and I wanted to connect it to an external monitor via the thunderbolt port. I bought an type c to hdmi adapter off amazon and it connects. (Actually bought 2 and the problem persists). But occasionally both my screen and laptop will turn black then back on again. This causes my video that i'm playing to either freeze/crash (netflix/youtube) which is SUPER annoying. It goes from occasional to quite often. It's really random.

My drivers are up to date, cable is new and the monitor is new from boxing day.

Any help is appreciated :)

Preferred Solution: Dell XPS 13 9350 Connecting external monitor via thunderbolt port

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

A: Dell XPS 13 9350 Connecting external monitor via thunderbolt port

There are several posts on this forum about this issue.

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The new XPS 13 (9350) has adopted a Thunderbolt 3 port instead of Mini DisplayPort for connecting external monitors. The XPS 13 web page states:
Thunderbolt™ 3 supports:         Power in / charging         PowerShare         Thunderbolt 3 (40Gbps bi-directional)         USB 3.1 Gen 2 (10Gbps)         Native DisplayPort 1.2 video output         VGA, HDMI, Ethernet and USB-A via Dell Adapter (sold separately)
It goes on:
Thunderbolt™ 3 multi-use port allows you to charge your laptop, connect to multiple devices (including support for up to two 4K displays) and enjoy data transfers up to 40Gbps, 8 times that of a USB 3.0.
I now want to make use of the "Native DisplayPort 1.2 video output" in order to connect a 4K monitor, but it seems to be impossible.
After many hours on the phone to various departments in Dell, I'm assured that they don't sell any Thunderbolt 3 accessories yet. They'll be releasing a Thunderbolt 3 dock next year (TB15), but for now the best they can offer is a USB-C to HDMI adapter, which only supports a maximum resolution of 1080p.
So... the sales blurb says this laptop natively supports DisplayPort 1.2, but how are we meant to use it?

A:Connecting XPS 13 (9350) to 4K monitor using Thunderbolt 3

I got sold the new Dell Adapter - USB Type-C to HDMI/VGA/Ethernet/USB 3.0, DA200, to connect my monitor via HDMI, but everything works, but the HDMI.
Dell techs have tried to get the HDMI to work, but no success. They now claim that that DA200 only supports the XPS12, not the XPS 13.
Seems like a bit of weak answer for a USB C adapter... especially as it's pictured in the photos and in the accessories section of the Dell XPS 13 page.
They said I can get a full refund, but doesn't really solve the problem of no external monitor.
Had the same problem with a USB C to DisplayPort adapter... I feel like HDMI and DisplayPort over USB C isn't quite locked down yet.
I guess we wait for driver updates...

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I would greatly appreciate any assistance I can get regarding some problems Im having with my laptop. Long story short I purchased a TB16 dock, managed to update all the drivers and firmware but still cannot seem to get my laptop to charge via the dock.
Everything else works; three displays, ethernet, mouse/keyboard. Everything except charging. The battery bar says that its charging but my battery slowly drains. BIOS says a 45w adapter is connected so it seems to recognized that its plugged in. I know its not the dock since my Brother's 9550 charges just fine. 
Thank you for any help I can get!

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Hello everybody,
I have an external USB 3.1 enclosure (Vantec Nexstar USB 3.1, model # NST-270A31-BK) that I am connecting to the USB-C (Thunderbird 3) port of my XPS 13 9350 laptop.  The drive does not start even after using two different USB 3.1 cables.  I have installed all the USB and Thunderbird drivers from Dell's website and activated the port in BIOS, but still have no luck getting the drive to run.
Thing is, when I plug the drive into one of the standard USB ports using a USB 3.0 cable, the drive boots up and is recognised by the laptop with no problem.  So if my troubleshooting was done correctly, the USB enclosure and cabling is not faulty, so the problem must lie with the USB-C port.  Has anybody successfully used the USB-C port to access external storage with any luck?


A:Dell XPS 13 9350 USB-C port and external storage

I am using XPS 13 9350. I have a Kingston Duo Flash Drive which has both USB C and USB 3.0 connectors. When I first bought the notebook, it was able to detect the flash drive, however transfer was very slow. After a series of driver updates, it can no longer detect the drive. However, the drive works when I use the USB 3.0 connector to plug it in the USB 3.0 drive. So I suspect it is the USB C port of my computer which is not working.
I have restored the computer to factory image and redownloaded the drivers, no luck getting it to work. Right now I am intending to send the laptop to Dell to check out.
Do you have any luck making the USB C port work?

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I use a XPS 9350 for about a year now. Its a certified refurbished with core i7, 16 GB and 512GB SSD.
I had an issue with usb C adapter tha has a lan port, HDMI port and usb 3 port. When I detach and reattach the adapter with laptop power on I almost always loose the external monitor (extended desktop mode) display. Display properties showed that cant detect the external display. the external monitor also goes to idle state. I need to turn off / restart laptop several times to get the external display on, sometimes for a whole day it did not come back at all.
I found a work around, when this happens go to display properties and change the "Extended desktop mode" to "Duplicate the display" mode and the apply, the other monitors get back to normal. you can reapply the Extended mode afterwards and it works fine.
I use kwmobile usb c hub.
I hope this post also help someone else. It s pity that a fine laptop has so much issues still to be addressed. (Auto wake up is killing me!!)

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Hello - I wish to connect my 24" Dell monitor (it has every port imaginable) to my Lenovo Yoga 720 WITHOUT using the Thunderbolt port. Is this possible? I am a Jazz musician and I with to use the external display for (1) reading complicatedf [e.g., classical piano] sheet music and (2) for use with DAWs (digital audio workstations, such as Abelton, Pro Tools, etc., where there is LOTS of info crammed in tight and a large monitor is needed). My Yoga's TB port is used for a 500 gig Samsung external hard drive.  The Samsung houses my music programs (e.g., the DAWs, Ivory piano, Easy Drummer, etc.), and I placed them there for the fast speed (this really helps eliminate the latency on the pianos).  I don't need fast speed with the monitor; my prior Lenovo G780 worked just fine with my 24" Dell monitor; the G780 had an HDMI port. I don't find a "TB dock" that has (1) HDMI, display port, etc. AND (2) another TB port.  Does such a thing exist? I've tried the crappy "USB montitors."  They (1) suck and (2) are not 24". Am I screwed here? Thanks, - Jeff Newton (Jazz saxophonist and pianist)    

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On the XPS 15 9550, can an external monitor with Displayport inputs be connect directly into the laptop's USB-C Thunderbolt output using a straight miniDisplayport-to-Displayport cable?  Similarly, can a miniDisplayPort to VGA adapter cable be plugged directly into the USB-C Thunderbolt port to drive older monitors/projectors? Or is the TB15 Dock mandatory in order to get the computer talking to  external video devices through its Thunderbolt port output?

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I bought an USB-C to HDMI adapter cable to connect my Dell XPS 9350 to an external monitor (Dell U2414H).
I connect my laptop with adapter via USB-C, the HDMI port of adapter with HDMI cable and the HDMI cable with the external monitor. After that, the external monitor detected the laptop but it displays error message like that "There are no signal from your computer. Please press any key to wake up it".
My laptop still running, I also changed mode to duplicate or external screen and update all drivers but nothing change.
I checked the Intel Graphic Setting, it also detected the external monitor.
Please see attached images for more information and help me to fix it.

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I recently purchased an XPS 15 9550 with i7, 16 GB RAM, 256 GB SSD, and GTX 960m dGPU that I have connected to a 27-inch QNIX qx2710 2560x1440p external monitor. I have this connected through a Cable Matters USB-C/Thunderbolt 3 to DVI-D adapter and cable.
The monitor and everything seem to work fine at 60hz, except for every time I unplug, turn on, or restart the monitor/computer the first five or ten minutes of use is plagued with constant screen flickering and flashing. After ~five minutes the monitor seems to stabilize and will only rarely have a single screen flicker. 
I have read other forum threads describing similar issues with different monitors/cable setups and that there is likely an issue between the wifi card and thunderbolt port. The common recommendation is to turn down the wifi output percent to 75%, however the Killer wifi card on this computer does not have an option under advanced settings to turn down the power output. Has anyone had any luck doing this on a recently purchased XPS 15 with the Killer wifi card?
The cables and adapters are new and the BIOS and all drivers are up to date. Other than the wifi issue, does anyone have suggestions or solutions to this screen flickering problem?

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When I connect my Dell XPS 13 9350 laptop with QHD display to an external monitor through the DA200 USB-C to HDMI connector the external monitors flicker constantly (laptop is fine-no flickering). Sometimes it works for like an hour then starts to flicker or longer so its not consistent. Below are the troubleshooting steps Dell has walked me through (including sending me a new DA200 part) to no avail:
- Dell has sent me a new DA200 USB C to HDMI part
- They have upgraded the Thunderbolt drivers and all other relevant drivers to latest ones (as of June 15 2016)
- I have tried on different monitors (5-6) and tried different HDMI cables.
Dell doesnt seem to know what to do now. THey have refunded my DA200 part purchase and told me to buy a separate HDMI to USB-C cable to test. If that fails it seems they will replace the motherboard. They say it could be an issue with the external monitors not being compatible with QHD, but this is not documented anywhere (they admit) and I havent heard anyone else having this problem on the internet and surprised every single person using this setup has QHD external monitors. This is an unworkable situation for me as I work in PC labs all day connected to external monitors.
Any advice? 

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Dear all,
Wonder if you can help me solve a problem. I have just received an XPS13-9350 from the Outlet last week. It was certified refurbished.
I've tried to connect a VGA monitor to it via a USB-C to HDMI, then HDMI to VGA cable. The HDMI to VGA cable works perfectly on my Inspiron 15. The setup also works if I full power down the XPS13, attach USB-C to HDMI to VGA to monitor, and then boot up. The external monitor then works almost perfectly (with the exception of Netflix's video player which makes it flicker blue - Youtube and local video are completely fine).
What I cannot do is plug in this monitor whilst the XPS13 is on already - which is inconvenient as I move on and off desk a lot, and powering down the computer every time is unhelpful. Oddly, the monitor will also not be recognised if I simply Restart from Windows. I have to fully power down and plug everything in before switching the computer on again.
I have updated BIOS, video card and Thunderbolt drivers since and none of these has solved the problem. My system info is:
DELL XPS13-9350
Windows 10
Core i7-6560U, Intel Iris 540 graphics

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My xps 13 9350 laptop screen is just blank but when I hook up an external monitor it shows everything. I went to my display settings and it doesn't even recognize a second display, for some reason it thinks the external monitor is the main screen. When I click "detect" it doesn't detect a second display.
I have booted in safe mode and everything works on the actual laptop but otherwise it only boots with a an external display.
Any help would be appreciated.

A:Dell XPS 13 9350 only recognizes external monitor, laptop screen black

Thank you for writing to Dell Community Forum.
Please try to run the on-board diagnostics <F12> and capture any error codes and messages.
Also, can you boot into BIOS?
Please click my DELL-username and send me a Private Message with the Dell Service Tag number and your email address.
Note: please don't mention the service tag or email id on the public forum as it contains your personal information

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I recently got a Dell XPS with Thunderbolt 3 technology for work, but also have a 2011 iMac with Thunderbolt.  I am wanting to use the iMac as an external monitor for the Dell, so I found a Thunderbolt 3 to Thunderbolt adapter to utilize TDM.  However, I have not had any luck making it work when pressing command-F2.  Through my research, I've found that using a pre-2011 iMac with a mini display port and a PC with a mini display port has worked no problem.  I've also found that using a post-2011 iMac as an external monitor with a PC should also work no problem if both computers have Thunderbolt technology.  In addition, I contacted Apple Support and they told me my connections should work since I have stepped the Dell's Thunderbolt 3 down to Thunderbolt, and connected the two machines via a Thunderbolt cable.  I am able to tell that my Dell recognizes the iMac, but have no way of knowing if the iMac recognizes the Dell.  Is there something that I'm missing?  Is there software that would make this work?  Has anyone had success getting this to work?  Any input would be greatly appreciated.  Thanks.    

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So, my ultimate goal is to connect a Firewire 800 device (medical instrument) via thunderbolt. I got my hands on two Apple thunderbolt adapters, first a TB 3 to TB 2, and then a TB 2 to Firewire 800.

When I connect the TB 3 to TB 2, Windows says "Try improving the USB connection" and it links me to this page. Opening the thunderbolt software shows no connected devices. I have the latest drivers that I am aware of, software package version I have BIOS version 1.4.10. I have disabled the thunderbolt security in BIOS and enabled the boot related thunderbolt options.

What else can I do? Thankful for help!

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I've recently been looking into buying an eGPU Enclosure such as the AKiTiO Node or the Razer Core. I've updated all the firmware and now I am running Thunderbolt Software Version The Node and Core both specify that the computer needs to both have Thunderbolt 3 (which I have) and be compatible with external graphics. What does this mean? I have Thunderbolt 3, so wouldn't it be theoretically possible to run external graphics provided the firmware was up to date?
So in summary, my main question is this: Will/can the Dell XPS 13 9350 be able to use eGPU enclosures over Thunderbolt 3 now (or in the future if there is firmware updates being planned)?

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Is it possible to connect to external monitor using the USB 3 port. 
The 2717 monitor has a multiport USB connector

Thx Zohar

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Hi, all, I have a Dell XPS 15 laptop and recently bought a Asus MB169B external USB monitor.  When I plug the monitor in, the laptop monitor (not the external monitor) flickers about every half second.  If I unplug it, it stops.  I upgraded my video driver to no avail.
Is it simply a power supply issue (the external monitor  does not have a power cord)?  Anything I can do?  It does it even if I have the laptop plugged in and charging.  
*something interesting - I just discovered if I duplicate the display and not extend the flickering goes away...but that kind of defeats the point of a dual monitor for me.

A:dell xps 15 monitor flickering after connecting external usb monitor

What is the exact system model? 
Have you connected the external monitor to a dock or hub or directly to the system USB port?
Update the BIOS - http://dell.to/1n3X2po - enter the service tag and download the BIOS, update and restart the machine and check.
Reinstall the video drivers and chipset drivers for the system from the above link and check.
Also, please click my DELL-username and write me a private message with the service tag and your Name for case records.
Let us know if you have any other queries.

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I just recently purchased an adapter from Amazon HERE...

After going through the run around with customer support, my issue is still not solved.

I am trying to connect an external monitor through HDMI via the adapter linked above, but an unable to solve the issue.  My laptop recognizes the external monitor is plugged in, and is functioning as you would expect with an external monitor (i.e. two screens, dragging between two screens, etc...).  However, it seems as though the laptop is not sending any video output to the external monitor.  
I have updated all drivers and installers that were recommended to me by Dell customer support.  Additionally, I had changed a setting in the BIOS to disable some sort of USBC or Thunderbolt 3.0 security, as per recommendation in the comments of the linked (above) product.

Any suggestions?

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System is a Latitude E5570 in E-Port Plus II dock, connected to two Dell U2515H monitors via Display Port.
Primary monitor blanks regularly for 2-3 seconds, but secondary mirror does not.
I have followed all instructions in this knowledgebase article: www.dell.com/.../blanking--flickering-or-blinking-video-issues-on-external-monitor-for-dell-latitude-exx70-exx40--precision-xx10-systems
Unfortunately, no remedy yet.
All graphics drivers are up to date, based on offered driver downloads for my system.
A Latitude E6530 does not show this issue when docked in the same dock with the monitor configuration unchanged. The monitor only blinks when E5570 is in dock. Blinking is irregular, sometimes a few times a minute, sometimes every few minutes, sometimes only each hour.
Changed Display Port cable to primary monitor, did not help.
Monitors are not daisy chained, but connected individually to dock to allow older systems to dock.
Would appreciate any advice.

A:Unresolved 2-3s blinking of external monitor at Dell E-Port Plus II Dock

We had this issue and it was resolved by a firmware update to the MST hub built into the system.  Go to support.dell.com, select your system, select Drivers and Downloads, and search "MST".  Note that sometimes if the OS selected by default there is the one you want, you have to choose some other OS and then switch back for anything to appear.  Anyway, the update you're looking for is Synaptics-VMM3320-MST-HUB-Firmware-Updater_DJG3X_WIN_3.12.1_A03.EXE.  I'd post a link, but most of the time that causes posts to get stuck in moderator queues.  Note that when you run the update, you have to have the system docked with an external display connected and in use, and then restart afterward.

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I have just purchased an XPS 13 (9350) last month and its giving me problem connecting with the Bluetooth headset or speaker. I have listed below device which I have tried to connect:-
1. X-Mini Kai 2
2. Creative WP-450
3. Sony MW-600
It will eventually paired in the bluetooth device but not connecting. I'm unable to see the device in the playback device although I have tick Show disabled device.
I have also email to the Dell Support team and tried to troubleshoot as per their advise and its still the same:-
Thank you for choosing Dell. This mail is related to your recent interaction with Dell technical support regarding bluetooth connecting issues. Your service request reference number is SR <deleted> , and Service tag is <deleted>. Please try these troubleshooting steps: Step 1: I suggest you to uninstall and reinstall the Bluetooth headset driver in the Device Manager.1. Press Windows Key + R Key.2. Then type “devmgmt.msc” without the quotes and hit on Enter Key.3.Search for Bluetooth headset driver and expand it.4. Right click on the driver and click on Uninstall. Follow the instruction.5. Restart your computer.
Step 2: Try to connect the Bluetooth headset onto the computer and install the Then run the hardware and devices troubleshooter1. Click on search bar next to the Start Menu.2. Type “Troubleshooting” without the quotes and click on Troubleshooting.3. Click on View All on the left panel of the screen.4. Click on Hardware ... Read more

A:Dell XPS 13 (9350) Bluetooth Connecting Problem

You may want to keep in mind the Wi-Fi can have an effect on Bluetooth.  We also need some basic info about your system.  If yo use the rich formatting for a reply you can attach snipping tool pictures.
In Device Manager you should show your Bluetooth device plus a couple of Microsoft entries.  If your headsets/speakers also show that is good.  No Unknown devices anywhere in Device Manager or yellow triangles on any Bluetooth components?
Do you know the Bluetooth version of your devices?
You seem to imply pairing the device does not work well.  Can you tell us what is happening and what tones you might be getting from the devices?  Are you able to get them in the pairing mode and your see on the Settings-Devices-Bluetooth page the system loading the drivers?
When you try to connect, do you just power on your devices and not put them in the pairing mode?  Any option showing up for connecting them.  The first time you connect, you may have to allow it but devices seem to operate differently and may not need certain steps.
What Wi-Fi card do you have?

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I just took delivery of a 9350, to replace my problematic 9343 and it has a different external monitor connector: Thunderbolt-3? USB-C?
Does anyone know if a regular USB Type-C to HDMI cable will work?

A:XPS13 (9350) external monitor cable

Hi Kevin,
Yeah you can use a regular USB Type-C to HDMI cable. Click the link for the cable on the Dell website

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My new XPS 15 9560's fan are always on when connect to the external monitor using the USB C port. While searching for the issue online, I found many people saying having similar issues - either connect using a USB C dock or any USB C adapter.
I also have checked the temperatures of the CPU, it's in mid 30s, not high. the temperature of the PCH jumps to 50C from 35C when I connect to the USB C port.. I wonder it must the PCH causing the issue?

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Got a new XPS 13 9350 and connect it to an external monitor (usb type C to HDMI). The connection works well but when I close the lip, the external monitor begin to occasionally turn black then back on again. Any solutions?

A:xps 13 9350 external monitor turn black then back on again

Hi Josh,
Did you find a solution to the described problem? It shows up with my XS 13 9350 as well. Both when I attach a monitor via the usb3.1 Port through a hdmi adaptor and when I attach it via usb3.0 through the Dell DA100 adaptor.

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My XPS13 9350 was one of the first with USB-C port (Thunderbolt 3) only and no DisplayPort, supplied in early 2016. It has caused a lot of headaches. As I tried to connect my external Dell monitor using  a USB-C to HDMI adapter from Dell (part no: 47KD7) there was no external display at all. Dell Support advised me to update BIOS. But it led to a complete freeze of my laptop and Dell replaced the motherboard. (It was a real nuisance as I use my laptop for work!!)
With the new motherboard,  the laptop/USB-C adapter/external monitor worked fine for 15 months. Until one day, out of the blue, the external screen started flickering with an image that was all distorted (cut in the middle). The laptop screen was fine. After a few weeks of flickering, there is no signal at all to the external screen. Moreover, as I connect the adapter in USB-C port the resolution on my laptop screen changes.
I know there have been a lot of issues with USB-C connector on XPS 13 and 15.  I have reduced wifi-power to 50%  but it has had no positive effect (several persons have said on this forum that it helped the video output). 
I am grateful to learn if anybody with similar problems found a solution. Cheers

A:XPS 13 9350 Flickering external monitor using USB-C to HDMI adapter

I have the same problem with the DA200 USB C to HDMI adapter

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I am on a laptop with a gtx 765m. I am trying to connect a thunderbolt port to a display port monitor. My understanding is that thunderbolt is backwards compatible with display port. But, for the life of me I can not get it to work.

I am using a minidisplay port -> display port cord.

I have ended up hooking the monitor up with an hdmi cord for now. FYI the monitor is a 2560x1440 monitor if that matters.


A:Thunderbolt to display port monitor. GTX 765m

Do you know for sure the video is ported through the Thunderbolt connector?

Any chance we could get your computer model number?

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I have run all the Lenovo system & driver updates so I believe everything is current but I still always get a Blue Screen (of death) when I plug in my Thunderbolt 3 2TB NVMe external SSD.  Thunderbolt Control Center shows the following: App: Driver: 1.41.648.4 Controller 1Thunderbolt 3 (15EB)Ports 2Security Level Kernel DMA ProtectionNVM Firmware: 43.0External GUPs supported: Yes The Blue Screen references a Stop Code of DRIVER_VERIFIER_DMA_VIOLATION. I checked Driver Verifier and all my flags are set to 0 (off). Any suggestions would be appreciated. ...Rob  

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Hi. I have a new Dell XPS 13 9350. When I connect external monitors via the Dell Adaptor (VGA connection), the monitors remain blank. The adaptor seems to be working, well at least the USB output is. I know that the monitors and VGA cable are working fine. I've updated the Video Drivers and the BIOS.
Any ideas?

A:External monitors not working when connected to Dell XPS 13 9350

This sort of sounds like my problem!
Does yours work if you completely power down the unit, then attach all cables and turn monitor on. Then turn on your laptop? This works for me but is very annoying to have to power down and up just to connect. Wonder if anyone has a solution that works for us both...

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Hi, I have the Dell XPS 2720 (2013) and I have a thunderbolt port in the back of the computer that worked great for my thunderbolt external drive when I had windows 8.1 installed but now since I installed Windows 10. The external drive is not recognize by the thunderbolt port. 
I don't know how to fix this or if there is no current driver out set to fix this but I'm sure other people are having the same problem.

Any suggestions? Thanks!

A:Dell XPS 27 Thunderbolt Port not recognize by Windows 10

I've got the same problem.
But when i updated to Windows 10 my WD My Passport RAID-0 Thunderbold-Drive worked fairly fine (crashed some times, wasn't recogniced every time, very slow) but suddenly it stoped working and even my Blackmagic Intensity Shuttle Thunderbolt will not be recognised.

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Hello Community-  I recently purchased a Lenovo X1 Carbon along with a Lenovo Thunderbolt 3 and two monitors. I have tested out the monitors individually with another computer, and they work fine.  Currently, I have one monitor connected via VGA to the Thunderbolt dock, and I have 1 monitor connected via HDMI to the Thunderbolt dock, which is connected to my Carbon x1. I only have connectivity with the VGA connected monitor, and do not have connectivity with the HDMI connected monitor, although I hear the system "connection sound" when I plug in the HDMI cord.  What is the issue here?  My goal is to have two monitors connected via Lenovo Thunderbolt 3 docking station to my X1 Carbon laptop. Thank you

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I have a P1 GEN2 OLED. While the internet is flooded with complaints of the OLED screen itself, the thunderbolt 3 port of my P1 GEN2 magically stopped working for no reason.  I have been using the laptop with an external display ever since I got the laptop. All went well. Suddenly from yesterday, the external display starts turning into a blue sreen with "NO SIGNAL" shown on it.  I had a windows cumulcative update (KB4532693) and windows security update (KB4524244) yesterday and I suspected that the update might be the culprit. I rolled back the OS. No change. Still NO SIGNAL.  I searched this Forum. Played with Thunderbold 3 menu in the Bios. Everything was enabled and every single option of "security level" was tried. Still NO SIGNAL.  I checked Intel Mangaement Engine software. It is already the latest version. Reinstalled it. Still NO SIGNAL.  I checked Nvidia driver. Latest version already.  In sum, the problem is: the thunderbolt port is still able to power the extenal display but just simply does not pass signal to the external display. HDMI port, however, still passes signal if use an HDMI cable.  I want to give it a shot here to see if anyone has experienced similar issues and how they sovled the problem before I call Lenovo technical support, the staff of which does not seem to know more than some people here on this Forum. 

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I have got the Dell Precision 5510. Is this support charging via ThunderBolt port?

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I have a Dell XPS 13, model 9350 (released Fall 2015), with the matte 1080p display (non-touch).  It has the new USB-C / Thunderbolt 3 port to connect to external monitors.  It requires an adapter to connect the USB-C port to HDMI inputs on external monitors
I have purchased two different USB-C to HDMI adapters and have tried connecting both to my relatively new LG LA6900 1080p HDTV as well as an older 1080p computer monitor, both with HDMI inputs.  Regardless of which adapter or external display I use, the colors come out washed out with very poor contrast when I export to the displays.  Regular greens and blues become neon, the whites are so bright they wash out all detail, browns are a light yellow, etc.  In general, the contrast and colors are so off that the external displays are pretty much unusable.
I have used both of these monitors as external displays for several other laptops with no problems.  I never have to adjust the monitors’ settings or the computers’ settings.  With the Dell, I have tried every imaginable adjustment on the monitors.  I have also used Windows 10’s color calibration tool.  I have also played around with the display driver’s settings. I also tried using several different HDMI cables. NOTHING fixes the bad contrast and washed out colors.
By process of elimination I know, therefore, that the problem lies in the Dell.  I have spent hours on the phone with Dell tech support.&... Read more

A:Dell XPS 13 9350 improper contrast / colors via HDMI on external display

Regarding the notebook, am I correct in understanding that the color problem only appears on your two external monitors and not on the LCD of the notebook itself? If this is correct then I don’t suggest reinstalling video drivers, if the LCD has a good display the drivers aren’t going to be the problem.
Have you tried other connections than thunderbolt to HDMI? Does the TV and monitor have Display port, standard VGA or DVI connections that you can try different Adapters with?  I certainly understand how you may not have these extra adapters lying around but if possible, this may be a way to see if it’s a problem with the type of adapters you are using, or a problem with any type of adapters.  You mentioned you have tested both displays on other notebooks, where you using thunderbolt to HDMI adapters on these other notebooks?
I mention power options on a lot of my posts but with notebooks you can’t emphasize it enough, I certainly suggest testing with the AC adapter connected to the notebook, and the Windows Power options plan set to High Performance and check to see if that makes a difference.
I don’t know if I suggest a service right now, especially if I am correct in understanding that the image on the LCD is fine but it may eventually be something to try. I will shoot you a DM to get your information if this turns out to be a suitable option.

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I have exactly the same issue. Can you please advice me. I have the latest xps 13 9350 with qhd screen. Laptop's screen works just fine, but the external screen looks very ugly. Basically the same problem as described by the topic starter.

A:RE: Dell XPS 13 9350 improper contrast / colors via HDMI on external display

Please reply with the brand and model of LCDs that you have tested with the notebook and please include what resolutions that you are trying with the notebook and I may be able to help. 


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(1) external monitor connected via Thunderbolt 3 Workstation Dock/Thunderbolt 3 Dock Gen 2 - Type 40AN. External monitor set as primary.All drivers/firmwares updated to the latest versions. Following the latest (Aug-Sep 2019) updates, the following problems appeared:BSODs every now and then, reported as related to dxgmms2.sys. Always while trying to start a movie on Netflix (external monitor).External monitor randomly goes blank (only rebooting gets it back on).Thunderbolt software window pops up on every boot. Boot time considerably longer than it used to be.Only once so far, could not boot (screen stuck on red Lenovo and "Hit Enter to interrupt..." message). Shut-down and restart fixed it. Any possible fixes on these?

P52, 8850H, P2000, W10pro 1903

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hello friends DELL users, can you help me? As I am getting older my eyes and neck are not in good condition. I decided to buy DELL monitor - Dell P2217H Professional and I realized there is no HDMI or DISPLAYPORT at my laptop. I bought port replicator DELL - Dell USB-C (M) na HDMI 2.0 (F).
Since I connected all above mentioned devices, my laptop went crazy. No chance to make it sleep and if I switch it off and on, it will not recognize being connected to external monitor. Sometimes laptop does recognize external monitor, but only duplicate the screen. Any advises pls?
Dell CS did not help so much. They sent technician to change MB and it is the same. I reinstalled WIN 10 (factory reset) and the problem persists.
Thanks a lot, 

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I have just bought a Dell XPS 15 (9560) and a Dell WD15 docking station with 130W power brick (same wattage as the laptop's AC-adapter). When I only use the docking station to power the laptop the discrete graphics card (GTX 1050) does not seem to work. When I am in a game (eg. Starcraft 2), I get like 15 fps with the NVIDIA recommended settings. Then when I plug in the laptops's own power brick (while still in the game) I get an immediate four-fold increase in framerate. When I unplug the laptop's own power brick the framerate drops down to 15 fps again in a heartbeat. Furthermore, when I only power the laptop through the docking station, I cannot even find the discrete GPU in the list when I'm trying to run the Geekbench 4 compute benchmark (OpenCL). Only the integrated graphics shows up. When I plug in laptop's power brick I find GTX 1050 in the list.
I have run the Dell Command Update application and all my drivers and firmware are up to date. 
Does anyone have any idea to what the problem could be?

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Has anyone had experience with this. I just purchased an XPS 15 9560 with a TB16 dock and I'm hoping to use the dock and my old Apple Cinema display, but I can't seem to get the monitor to work in the dock. I purchased an Apple Thunderbolt 3 to 2 adapter and the screen works fine when I hook it directly into the laptop, but I get a USB malfunctioned error when I hook it into the dock. Any information or tricks anyone else has found would be helpful. Thank you in advance.

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hi, I have setup one of my faculty with a Yoga 920131KB plus Thunderbolt 3 Dock. He has an existing monitor (Samsung Syncmaster P2450) that should support 1920x1080. Seems to be current on all drivers and patches under Win10 EDU version. (Including the CCG4 Firmware Update to v55). We are using the HDMI output from the dock. If we try to configure extended desktop to the Samsung monitor at 1920x1080, the screen extends off both sides about half an inch. Maybe also a quarter inch over at the top.  As a work-around, set at 1680x1050, video generally works as expected, but the display starts about 2" in from either side. Generally I don't like using add-on utilities (prefer to just use standard windows built-in options), but somewhere along the line this has the Intel Graphics HD Utility.  I was using that to switch resolution, the Windows settings seemed to track along with changes in the Intel utility, but still overscanned the display.  I played with some other settings in the utility about Display Scale (other than 100%), didn't seem to change anything. A second problem occurs with this setup: when the laptop is used at home, put to sleep, then plugged into the dock, the screen is displayed on the external monitor at maybe 200% (?).  That is, you only see the central portion of the image.  No fiddling with settings seems to correct it, but rebooting usually fixes it. The second problem also occurs with a similar Yoga 920 + Dock (d... Read more

A:Yoga 920, Thunderbolt 3 Dock and external monitor

Also wanted to mention something I noticed while working on this: I saved a log from the Intel Utility. There is a section in there about "Maximum Image Size". This seemed to be correct for the laptop display (12.2"x6.69") but the Samsung was listed at 6.3" x 3.54"    It is a 24" diagonal display, so that is obviously wrong, but I don't know that it is important. Intel(R) UHD Graphics 620 Report Date: Monday, February 5, 2018Report Time [hh:mm:ss]: 1:21:19 PMDriver Version: System: Windows* 10 Education (10.0.16299)Physical Memory: 16225 MBVendor ID: 8086Device ID: 5917Device Revision: 07Graphics Output Protocol (GOP) Version: 9.0.1066Current Resolution: 1680 x 1050 Display Type: DigitalDDC2 Protocol: SupportedGamma: 2.2Connector Type: DisplayPortDevice Type: DisplayPortMaximum Image SizeHorizontal Size: 6.3 inchesVertical Size: 3.54 inches

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I updated drivers on all devices, including setting the XPS to do nothing when lid is closed. External monitor works fine, until XPS lid is closed, then external screen blanks. However, monitor works fine in airplane mode, which does me no good, as I need an active internet connection for certain software functionality. Also, airplane mode disengages my wireless keyboard and mouse, and I need to turn connection back on and pair devices (wasting more of my time). Is there anyway around this issue, other than returning the TB16 for something that works?

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Hi. My second external monitor (Lenovo ThinkVision LT2452pwC) connected with T570 via thunderbolt-dp cable (the first is connected via HDMI port). Once 2nd monitor stopped working and I had to push hidden button on the bottom of laptop. After that all started woking good. But today 2nd monitor stopped working agian and I tried all my past actions but it sill not working. Maybe it depended on Windows or thunderbolt drivers? (Cabel and monitor are OK I checked)

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Hello Everyone, I am new here so please go easy on me.I just bought and X1 Carbon 5th Gen laptop c/w Thunderbolt 3.0 docking station.The problem that I have is that the docking station won't recognise any of the external screens that are connected.I am using two Acer screens (one is connected using HDMI port on the dock and the other one uisng Display port).I have tried by connecting just one screen but nothing.I can see that Thunderbolt software is installed and its connected to my laptop.The laptop will charge through the docking station and also the wireless mouse and keyboard will work fine through the dock.Lenovo recommended that i should update my drivers.So I installed Lenovo Companion from Windows store. But it won't update my system. After clicking on System Update, I will get an error message saying "There is a problem in reteriving new updates for your system.Please try again later".Hence I downloaded all the drivers from support website and installed them manually but my docking station is still not working with the external monitors.The monitors works fine when connected directly to the laptop using the HDMI cable. Thanks in advance for your help.

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Hello, I have bought a USB-C Thunderbolt 3 to HDMI cable which i would like to connect to my X1 Extreme laptop.After i updated to the latest BIOS firmware, latest Thunderbolt firmware and Windows 10 (1809) and all other available updates, i still could not detect my LG 65C8 OLED TV which i have connected. It just does nothing when i insert the cable, not even a notification. For more information about the cable:https://shop.transmedia-germany.com/verbindungskabel-p-20013356.html Regards,Rob

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For my X1 Carbon 5th Gen I got myself a Thunderbolt 3 Dock (Gen 1) - (40AC). But right now the dock doesn't work as expected.I have connected a 1440p-Dell monitor via DisplayPort. Also I conntected a 1080p-Panasonic-TV via HDMI. The manual of the dock suggested to use a certain DisplayPort-Connector, which I did.I'd like to switch on my ThinkPad via the power button on the dock and then wake up my Dell monitor from sleep. Right now the Dell is set as primary display. If needed I'd like to switch on the TV as a secondary display. The ThinkPad should remain closed and only the external displays should be used. In the BIOS of the ThinkPad I alread configured, the an external display should be used prior to the internal one.Right now the following happens: I switch on the ThinkPad via the button on the dock. The Dell monitor doesn't wake up. Only when I switch on the TV (Panasonic 1080p via HDMI) also the Dell monitor wakes up and shows the content. I'm rather lost how to solve this behaviour. I already checked the BIOS version of my ThinkPad and updated it - nothing changed  Has anyone any idea?

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I have a TP X1 Extreme Gen 2 attached to Thunderbolt 3 Dock (Gen 2) and 2 ThinkVision P24h monitors. System is set to disactivate monitors when not in use for 30 mins. However, when I return to laptop only the right monitor wakes whereas the left one (set as primary display) will not. The only way to wake it is to unplug the monitor from dock and plug in again or unplug laptop from dock and then reconnect. Left monitor is connected with DisplayPort cable and right monitor with Type C (it would not work with DP cable).Furthermore, both monitors frequently won't turn on with initial system boot and I am forced to disconnect and reconnect dock cable to get them to work.All drivers and BIOS are up to date.Any suggestions/solutions?

A:Thunderbolt 3 Dock (Gen 2). External monitor doesn't wake after suspension

I had trouble with a different Thunderbolt dock, that went away after I updated the dock firmware. Maybe there is an update for your dock? You will have to install those manually.

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I have Usb C Hub with PD and HDMI and it seems to work fine with X1 Carbon Gen 6 and T480, but with my X1 Extreme it does not.With HDMI it does detect a second display but it doesn't really display anything. Similarly, with a 65W adapter, when connected directly to the laptop it charges, but through hub it doesn't. HELP!

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Dear All: i have the X1C7 with the UHD screen and a 10th gen processor connected to the "AN" Thunderbolt 3 Gen 2 dock. the dock initially also had external speakers connected to the dock via the miniplug in the front of the dock. when i removed the miniplug and external speakers after around a 2 1/2 week usage period with the external speakers, the external screen started to flash a brief blank moment (< 1 second, maybe 0.5 second).  these blank screen flashes are black screens, and may happen every few minutes or much longer. may i ask if anyone has experienced these flashes of black screens? fyi:  i did make sure that the DisplayPort output was securely plugged in. thanks in advance.

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