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P1 GEN2 Thunderbolt 3 Port Stopped Passing Signals to External Display

Q: P1 GEN2 Thunderbolt 3 Port Stopped Passing Signals to External Display

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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Preferred Solution: P1 GEN2 Thunderbolt 3 Port Stopped Passing Signals to External Display

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.)


Hi, I'm having issues with my external 4k display to only be able to operate at 30Hz. I have my laptop connected to a generation 2 Thunderbolt 3 dock via the provided cable, and from there I have tried both DisplayPort and HDMI cables (several) to connect to my display.All the technical information I have seen says that my laptop plus the dock should be able to operate at 60Hz even at this resolution, but I'm unable to lock down the settings that enable me to do that. I have pulled the latest BIOS, TB3 FW, display drivers, Intel chipset drivers from the product page.My screen is: AOC U3277FWQ if that matters. I'm running Windows 10 Pro 1809. Has anyone battled with the same issue? I'm running out of ideas on how to solve this. The HDMI port on the side is apparently only 1.4 so this would only support the [email protected], but I'm not using it at the moment. If I set the screen to 1920x1080, I can set the resolution to 60Hz. Best regards,_tero

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 I am attempting to conenct multiple monitors to my x390 through the thunderbolt dock.  The first monitor comes up fine with 3840x2160 resolution.  However when I connect the second monitor it comes up as 800x600.  I do not have the option for the second display to change resolution.  x390 s connected to dock via Thinkpad TBT cable 40G I have ran lenovo software updates and I am at the latest software version for everything. I tried the windows display app and the Intel display app and both are showing the same behavior for the second monitor. I have tried reversing the order of connecting the monitors.  The first one to connect always goes to 4x, where the second one connected always reverts to 800x600 without the option to change, I have tried turning off the built-in-display to see if that would change anything, but it didn't. I have tried swapping the port on the dock that the monitors are connected to.  The first monitor always correctly displays at 4k and the second is set to a much lower resolution typically 800x600 without any options to change. The intel app has an option to change the refresh rate, so I tried changing to a few different refresh rate to see if that would change anything, and it didn't help. I had the monitors connected via hdmi, so I switched both to display port and now I get 3 options, but the max is 1280x720.  I still do not get the 4k option. I then tried one con... Read more

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J'ai acheté ce portable neuf par correspondance et j'aimerais savoir ce que j'ai comme port sur le côté droit de l'ordinateur. Je devais avoir un port Thunderbolt 3 mais il semble que ce soit un port mini-display. J'aimerais que l'on me précise la réaliser à l'aide de l'information suivante :
HP Spectre Pro x360 G2 Convertible PC

NOTEBOOK/TWO-IN-ONE/CORE I5 6300U/2.4GHZ/8GB-DDR-1600/256GB SSD M.2/13.3IN/W10P 1
Mon objectif était d'acheter une Docking station du type Thunderbolt 3. Est-ce que je le peux avec cet appareil ? Sinon, que me recommandez-vous comme docking qui contient le maximum de ports pour cet ordinateur ?
Henri Frappier

A:Port Thunderbolt 3 ou port mini-display



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Hi All I have been crawling through these forums and Google in general, it seems a lot of people have similar issues. I run a T470s, I use a Startech USB-C to HDMI adaptor allowing me to connecto to 2 external monitors. I have done for many months and all was fine. I recently ran system update and found multiple drivers needed updating, I ran this and since I cannot use my external monitors.  Thunderbolt software is up to date, as per screenshot it doesnt show the controller version or details in lower half. Device Manager doesnt show the controller at all (even hidden devices). I have tried:uninstall/reinstall of TB SWrunning the firmware update tool but that just says 'No Active Controller' in the system.I have tried reinstalling every Intel driver availablethe BIOS was updated by System Update previouslyI have checked the BIOS settings and everything is enabled I found a system restore point from a few days ago which I think is before this started, rolling back to that allows the TB3 SW to show the controller version and a device showing in Device Manager but my monitors still dont work. A further reboot without changing anything takes me back to 'None' controller version and nothing in Device Manager. Open to the idea it could be my adaptor has died, I understand you sometimes need a TB3 device connected to update the FW (?) but I do not have any other devices, hoping to try my adaptor on another machine at head office next week to ... Read more

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P1 i7-8850H, 32GB RAM, Quadro P200 conected to a LG 32UD99-WBoth in Windows 1809 and 1903 when resuming from sleep it will randomly happen that:Audio through the external display is lost. Audio device shows a warning mark and you have to disable/enable in device manager to get it back working.External display is no longer recognized (2 times in 24 hours) you have to disable/enable the Nvidia Quadro P2000 in device manager to get it back working. Connectivity is unreliable regarding internal graphics, external screens and thunderbolt It seems to me that these recurring graphics, display and thunderbolt issues found in P1 X1 machines are related to it. Is there anybody experiencing the same? This is a summary of bios versions with fixes related to issues alike.<1.21>UEFI: 1.21 / ECP: 1.10- (Fix) Fixed an issue where WMI BootDisplayDevice option is incorrect. - (Fix) Fixed an issue where the system might not resume from hibernation on Discrete Graphics mode with Windows10 version 1809.<1.19>UEFI: 1.19 / ECP: 1.10- (Fix) Fixed an issue where the system might BSOD when connected the external monitor.(Note)NVIDIA Graphics Driver v25.21.14.1735 or later version is required.<1.18>UEFI: 1.18 / ECP: 1.08- (Fix) Fixed an issue where the system might not boot with Hybrid Graphics.(Note)If the UEFI BIOS has been updated to version 1.18 or higher, it is no longerable to roll back to the version before 1.18 for boot problem prev... Read more

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I just try to connect the thunderbolt (from my laptop) to a display port (my monitor) and nothing happen.
The cable I use is coming with my monitor, mini display port to display port.

I had google for this, some mac can use their thunderbolt as a mini display port, can win7 do the same thing? or I need to find a thunderbolt adapter? or I need to find an ext. graphic card to have the video output?

A:can I use thunderbolt as mini display port?

Hi have you tried using the FN key with an F key to select it to the external monitor

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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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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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Hello, I bought a Lenovo Yoga tab 3 plus (model YT-X703F) and I would like to know if its usb-c port supports Display Port ou Thunderbolt technology. I would like to buy an adaptor usb c to hdmi in order to use my tablet in classroom connected to a projector.Thank you for your answer!

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Windows 7 EnterpriseSystem does not see or react to external display when connectedNothing displays when connectedExternal display says nothing connectedTried multiple dongles - same results
Other system that include a VGA connector work just fine to same external display.

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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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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 :)

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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P50 / Windows 10 I get this message every time I dock the computer or plug in an external HDMI display. The Thunderbolt software is version which looks like the latest available. Any way to suppress this? Very annoying when presenting.

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Hello everyone, At the end of last year I bought a bunch of Carbon X1 7th Generation laptops for our office, and several of these are suffering from the issue that is also described in these threads: https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-Carbon-6th-gen-HDMI-not-working/td-p/40915... https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-Carbon-6th-Gen-HDMI-Not-Working-and-Thunde... Basically, the laptops will occasionally cease to recognise external displays, and when this happens Thunderbolt has also gone missing. The top thread mentions that firmware has been released in June that should solve the issue (post 41), but as far as I can see our systems are currently up to date according to Vantage with Thunderbolt driver 1.41.729.0 installed, and the problem persists. (Granted, the thread was about 6th gen, and I am not sure how relevant it is for 7th gen laptops). Another solution mentioned in the same thread is to reset the laptop with the small button on the bottom. This does indeed solve the problem, but only temporarily - after a while, the issue returns. What I am therefore looking for is a permanent fix for this problem, but since I am out of ideas myself, I am hoping that someone here might have another suggestion. Any help would be appreciated. Many thanks!

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Has anyone experienced this issue below? I disable my internal Quadro M1000M, I plug in my eGPU (AORUS 1070 Gaming Box) via Thunderbolt, use it for a while. Then when I'm done using it, I unplug it, re-enable my Quadro M1000M and plug in my external monitor via HDMI.   The display driver crashes for both my Quadro M1000M and my Intel HD Graphics 530 and the external monitor never works.  Microsoft starts a Microsoft Basic Display Driver. I tried disabling and re-enabling both display adapters but external monitor still won't work, it just crashes the adapters again. The only fix to this issue I have found is to uninstall the Quadro M1000M in the device manager and restart the computer. Then after it restarts, I can use the external monitor again with the Quadro M1000M. So it's easy to do and not a huge pain in the butt, but if anyone knows a way to fix this issue without needing to restart my computer, that would be a great help.

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1. Is this a wired or wireless connection issue?
2. Who is your Internet Service Provider (ISP)?

3. What type of Broadband connection are you using?

4. What is the exact Make and Model of your Modem, Router or Modem/Router Combo
Netgear WNDR3800, Cisco DPC3008

5. What is the Name of the Anti-Virus, Security or Firewall Software
comodo firewall

A:router not passing port scan after opening port

Have you tried a different port to see if that port is being blocked by your ISP?

I also see that your parsing TCP to UDP, probably doesn't make a difference to the port being open or closed but it might be better to set them both the same or set to Any.

Another problem you may encounter is your IP may change, most ISP's like to change your IP every so often so you may have to set up a DDNS with a hostname in order to access the services you want remotely.

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so i opened my port 25565 (or so i thought) went to test to see if its open on multiple sites and....all of them say its closed.

A:router not passing port scan after opening port

Start the application you opened the port for and then test the port, it should report it as opened.

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Hello I seem to have a problem on my P53 laptop, as the external displays, connected on the two HDMI ports on the Lenovo TP Thunderbolt 3 Workstation Dock(Product nr.: 40AN0230EU), they just randomly turn on on the first try. If they not turn on, on the first try, I have to put it back to sleep and then awake again at once. I always use the power button on the dock.So where can I see what firmware version I have for my Thunderbolt 3 Workstation Dock. I se that I have controller driver version 1.41.648.4.I've also search on Lonovo's site to find a download, but can only find this site: https://pcsupport.lenovo.com/us/en/products/accessory/docks/thunderbolt-3-workstation-dock/40an/down... but I can not see the workstation dock listed, just the Thunderbolt 3 dock, but maybe that cover's both? The version listed is: V1.0.0.20 of 07 Aug 2019. I'm also very confused about what dock I really have, is it the:  ThinkPad Thunderbolt 3 Workstation Dock, ThinkPad Thunderbolt 3 Dock Gen 2 or the ThinkPad Thunderbolt 3 Workstation Dock Gen 2 , or are they all the same as they seem to use the same driver if you look at this site:  https://pcsupport.lenovo.com/us/en/downloads/DS505148  , here the latest driver version are : V10015 of 23 Sep 2019. It's also odd that the Sep version(10015) has a lover number that the Aug version(10020)?  I'm also very confused as if the terms firmware and driver's are used correctly, and are there really 3 different... Read more

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I myself own an XPS 15 9550 and noticed that I was not getting the full Thunderbolt 3 speedover it's Thunderbolt 3 port. I expected speeds around 2700MB/s, because of the overhead withthe theoretical gross speed of 3870MB/s, but I only ever got 1400MB/s out of it.
I did some digging and found out that none of the XPS notebooks with Thunderbolt 3 are evenable to achieve the full TB3 speeds, because they are only connected with two PCI Express lanes (x2.3).You can read more about this on the following links:Dell Subreddit PostChipset Digging on Forum

Thunderbolt 3 and the promised speeds were the MAIN REASON I even bought this notebook.I feel very cheated here.

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Dear helpy helpers, I am experiencing a heap of trouble when using T490 and Thunderbolt 3 Dock Gen 2 together.When we recieve a new machine, we reinstall it, with a clean latest version of Windows, and run TVSU for the lastest drivers. Software wise, they get Office, Visual Studio, ReSharper, SQL Server Management Studio and Symantec. Nothing fancy. The last 3 machines hav had issues with the docks. The docks are 135W (cable plugged in the correct power port on the dock). Cable for the PC is on the back and not the front. Screens that wont run full resolution, no ethernet, no charging and the like. Checking the Thunderbolt Control Panel, the dock is connected. Reinstalling wont solve the issued, but getting new motherboards for 2 machines worked somewhat. I've been managing Lenovo laptops for 10 years now, and though i don't see myself as an expert, I have seen quite a few different models, and experienced different issues with docking solutions. Though. Nothing. Like. These. Thunderbolt. Docks.  Is anyone else having trouble, or am I the only one fighthing this? I am thinking about running back to Windows 10 1809 instead of 1903, but I dont really like having to be vary of backwards compatibility with a simple setup as above.  Any help would be hawt!

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Does the usb-c port in this model support charging from powerbanks or usb-c wallchargers and what are the speed characteristics ? 

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Sorry if covered before NEW here....

If I set ports to pass for online gaming on my roter do I also have to set somehow in the Windows Vista Firewall.

I am trying to host GTR2 and GTL but nobody can see my rooms.

A:port passing


btw: you can only port forward to ONE address on the LAN and that is the
only firewall that needs to be opened
ALLOW any tcp/udp inbound port xxx-(yyy)

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I've been using my HDMI port with a HDMI->VHS adaptor for about a year with no issuesDriver is AMD Radeon HD 8610G two days ago I took my laptop to a meeting, then when I returned home I plugged in the HDMI cable as normal and could not get the second display to work I've reinstalled the driver mentioned aboveI've replaced the HDMI->VHS adaptorI've tested with another HP monitorI've tested this monitor with another computer and it works fineI've shutdown, removed battery, held on button on the laptopI've shutdown unplugged and held on button on MonitorI've tried several other sequences of startupI've used the Project image to extend, duplicate, second screen only   etc..I've checked status of HDMI port in devices, it says it is working fine...... any help would be appreciated to get my dual monitor setup working again

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I am trying to use a 3rd party external GPU enclosure that attaches via thunderbolt, and when attached, I got the message pop-up that external GPU support was not enabled by the vendor, and as such the device will likely not work? Has Dell locked the Latitude 7480 down to no external GPU support?

A:Latitude 7480 - Thunderbolt 3 - Thunderbolt software say external GPU support not enabled?

Probably.  I read somewhere that since Dell is pushing their Alienware external GPU stuff that uses a proprietary connection, they never enabled external GPU support via Thunderbolt.  

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Hello, I am using the x1 carbon 7th gen 20QD and trying to get ethernet to work through the thunderbolt docking station.  I have installed all the drivers from the lenovo site for the gen1 and gen2 thunderbolt dock and ethernet still does not work through either thunderbolt docking station.  Ethernet works fine with the usb-c travel hub and the ethernet adaptor that plugs in next to the USB-C works as well.   I have also swapped the dock out with the thunderbolt dock on my yoga 370 and ethernet works through the dock on the yoga. Any ideas? 

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 Can I use 2 external monitors on X1 Carbon Gen2 using onelink rtl8153-2 (Pwr,VGA,Ether) and Display port. Want to turn off lcd and use just 2 ext monitors without getting A usb C adapter. My plan is to use a DP-> VGA adapter. 1080P resThanks

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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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 Can I use 2 external monitors on X1 Carbon Gen2 using onelink rtl8153-2 (Pwr,VGA,Ether) and Display port. Want to turn off lcd and use just 2 ext monitors without getting A usb C adapter. My plan is to use a DP-> VGA adapter. 1080P resThanks

A:2 external monitors using onelink & Display port

Hi 944V8! Welcoem to our forums community. Base on the product reference: http://psref.lenovo.com/Product/ThinkPad_X1_Carbon_2nd_Gen, you can connect a maximum of two external displays. The maximum resolution is : 3840 x 2160 at 30 Hz through the mini display port and 2880 x 1620 max resolution at 60Hz through the HDMI port. We highly suggest you to connect it directly to the external monitor because passing it to a VGA port would degrade the display quality.

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In the last couple of days my monitor will just go black, but my computer would still be on and i would still be talking to people. When I would restart my computer would say it ran into a blue screen. Most recently it stopped and when I tried to restart it, It still wouldn't work. That's the first time it wouldn't work after restarting.

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Hello, I was using my samsung tv as an external monitor using a USB-C -> HDMI adapter without any issues since the day I got my T470.Since a few days, when I plug in my adapter, nothing happens anymore, as it is no longer recognized at all, using the HDMI port works fine though.I tried with a different USB-C -> HDMI adapter and got nothing either, so I assumed it is an issue with the port itself. Here are my thunderbolt options in the BIOS :   Then I checked in the deviced manager to see if the Thunderbolt controller is showing, it's not.  I redownloaded the Thunderbolt software from T470 support page and reinstalled it, version is I downloaded the Thunderbolt firmware update (https://pcsupport.lenovo.com/id/fr/downloads/DS121681) and ran it in Administrator mode.The update fails with this message "no thunderbolt controller found, or thunderolt software is not present in the system"  I saw in that similar post (https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/Thunderbolt-TB3-NOT-found-in-device-manager-f...) that turning off the option "Thunderbolt BIOS Assist mode" in the BIOS made the thunderbolt controller appear in the device manager, but this option is not available in the T470. Everything is up to date according to Lenovo System update software.Trying to restore windows to a previous point failed at each attempt.My current windows 10 build is 1607 (14393.2214) I'm running out of ... Read more

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I run a web server from my laptop, and my IP address (location) gets updated via DynDNS.org servers.

My notebook is always behind a NAT-configured LAN, and I have configured the router firewall to pass port 80 service requests to my IP (usually 192.168.x.2, where x is maybe 0 or 1 or whatever...I use NetSetMan for location based setting). Note: the DHCP server is configured to stay away from static addresses in the private LAN.

Most routers have their own port 80 service, the configuration interface, accessible by hosts inside the LAN.

I don't have a problem with port 80 service requests coming from the WAN getting passed to 192.168.x.2 host running the web server.

BUT, users in the 192.168.x subnet requesting service from within the LAN do NOT get delivered the web page from host 192.168.x.2, but instead the router's configuration interface, if they use the host NAME. Of course, if they use the host IP address, they get the content.

What is happening of course is that if anyone uses "http://mywebserverhostname.com/", it goes to DynDNS.org where the IP is resolved to the address a.b.c.d, the WAN IP address of the router I am currently connected to. So the http client bundles the packet to the destination a.b.c.d:80.

The users INSIDE the LAN get the router configuration interface web page when they type in a.b.c.d:80, but not users OUTSIDE the LAN (in that WAN).

What's the solution?

A:Passing Port 80 Service Request Through Router From WAN To LAN

Any chance this is a Belkin router? I had the same problem with my Belkin N450 Gigabit, not being able to use my DynDNS name, only the ip address (192.168.....). The Belkin died a few days ago when our power blipped two or three times in a row (I did not have the router on a battery backed up UPS plug, do now).

I replaced it with a Netgear 450 Gigabit router and the problem is gone. I can now connect using the DynDNS name (and Mooo.com name) again. So, bottom line is, it's probably your router causing the problem.

I went round and round with Belkin on this for over a month and finally just gave up. Made it difficult to test changes to the web server.

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My Netgear R6220 spontaneously stopped passing the internet signal from the modem. I have verified with the ISP that the problem is not the modem, and checked that the router is still broadcasting wifi, albeit with no internet. At the time this happened two computers were plugged into the router via ethernet, and only one dropped off the internet initially. But once I rebooted, that was it.
So far, I have rebooted the modem and router, hard reset the router, uploaded new firmwear for the router, run all the Windows 10 diagnostics and checked that the settings are for automatic ip addressing.
I've looked at several similar threads, but nothing quite matches, and I believe I have tried all the fixes I've seen. I don't think the computer itself is an issue, since it's working fine with the modem, and two computers were affected, but it's a Dell XPS with i7-3770 processor and 32 GB of RAM
I'm using straight connection to the modem now. Any help is appreciated.
here is the result of running ipconfig when the router is plugged in:

Windows IP Configuration
Host Name . . . . . . . . . . . . : Main

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Hybrid

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller

Physical Address. . . . . . . . . : 9... Read more

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Hi folks! Is there a place where I can find technical information regarding the "Expansion port 3" ?  I was thinking on building a docking station that could suit my needs, as I could not locate a docking station that could be used with my laptop. If you know the pinout, function of pins and signals of the "Expansion port 3", please, drop me a note, OK? Thanks in advance and regards, Mike

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Win7 Pro SP1 64bit current.IN2VDO73WW6.exe intel display driver applied. (  Plug monitor to HDMI port but intel driver doesn't see it. NWN/NWN2 play fine on laptop builtin screen. What am I doing wrong? EDIT: bios said 43CN43WW, KBC 43EC29WWran 44CN43WW.exe in win7 admin modebios now says 44CN43WW, KBC 44EC29WWNow when I click detect in resolution it saysAvailable display output on: Intel HD Graphics familyBut still no ouput. Installed the intel driver update software but it didn't find anything to change. Huge thanks to Lenovo for having a current win7 driver list for this old laptop.!! Moderator note: image containing serial number removed to prevent abuse.  If you re-post the image, please obscure the serial number.

_________________________________________________________IdeaPad V570-1066A9U, Built 5-22-2011, BIOS 44CN36WW(2011-08-04)Win7 Pro x64 clean install. Sammy 840 Pro 128GB SSD. Fast! Used nice hardware manual to re-grease CPU and remove tiny bit of lint.

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I have a new Lenovo Thinkpad T490 with an Intel UHD Graphics 620 controller and whenever I try to connect an external display through the HDMI port the display is detected, but nothing shows on it. The screen either remains black or a "No signal" message is displayed on it. Displays seem to be working fine through the USB-C display port. I am primarily using Ubuntu 19.10, but I tested the problem on Windows 10 and it is the same. The graphic card drivers and the BIOS are up to date. I also tried with different monitors and none of them works. Here's an output from the xrandr command, where the display is detected on the port HDMI-2. I tried multiple resolutions, refresh rates, but nothing works. Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
1920x1080 60.00 + 59.97* 59.96 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
... Read more

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Thinkpad X230iI have an Acer R221Q external monitor. If I connect my Thinkpad to the monitor's HDMI port using the Mini Display port, in Windows 7, I get the dreaded blinking.If I connect from Linux Mint, everything works perfectly OK!!!!! Is there a solution for the Windows fault?

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Win7 Pro SP1 current.IN2VDO73WW6.exe intel display driver applied. There is no Nvidia in laptop. Plug monitor to HDMI port but intel driver doesn't see it. NWN/NWN2 play fine on laptop builtin screen. What am I doing wrong? Huge thanks to Lenovo for having a current win7 driver list for this old laptop.!!box label

_________________________________________________________IdeaPad V570-1066A9U, Built 5-22-2011, BIOS 44CN36WW(2011-08-04)Win7 Pro x64 clean install. Sammy 840 Pro 128GB SSD. Fast! Used nice hardware manual to re-grease CPU and remove tiny bit of lint.

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Hi there, I have a spectre x360 which I am using with 2 monitors: 1 x 24in monitor plugged via HDMI - HDMI lead1 x 27in monitor pluged via mini DP - full size DP lead I have the laptop screen and the 2 monitor screens on at the same time - so effectivily im using a total of 3 screens. Everything works fine until the laptop goes to sleep. When I wake up the laptop, the laptop screen and the monitor plugged in via HDMI turn on. The monitor plugged in via display port doesnt wake up. The only fix is to unplug the mini displayport cable and plug it back in to the laptop - this wakes up the monitor. The issue with unplugging and plugging the cable back in is all the windows that I had opened get moved about and its very frustrating. Please advise how I can get the laptop to wake up both monitors. thanks    

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I have been searching in several forums but have not been able to fully fix this problem. It was fixed temporarily and failed again.
This the system I have:

HP TouchSmart tx2 tablet pc with Windows Vista Service Pack 2 (Home Premium) x 64 bit
AMD Turion (tm) X2 Ultra Dual-Core Mobile ZM-82, 2.2 GHz
ATI Radeon HD 3200 Graphics

I have been working for over a year with an external display Dell ST2310 flat screen monitor and working fine with the "use external display only" setting . From one minute to the other both screen went black so I forced a restart and again the same problem. I decided to manually disconnect the external display by unplugging the VGA cable from the laptop which automatically switched back to the main display as it would if I disconnected the display. When I plugged the VGA cable back in again the same issue both screens were fully black. I disconnected once again the VGA cable so I could change the settings in Windows Mobility. I plugged back in the VGA cable after changing the settings from "external display only" to "mirror monitors" and after playing for a bit with the Windows Mobility Center I got the external display to work back again to my regular settings: "external display only". This solution lasted for a day and now the main display works and the external display screen is fully black.

Solutions I have tried unsuccessfully:
- Changed VGA cables, still experiencing the same issue.
- Tested monitor ... Read more

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Hello, everyone.
I am using a Latitude 3540 laptop with switchable graphics (Intel HD Graphics, AMD Radeon HD 8850M). As soon as I got the laptop, I upgraded to 8.1 (probably a mistake!).
All of my drivers are up to date according to Device Manager, and I've updated the chipset and BIOS and everything according to the Dell website. But for as long as I've had this laptop, the VGA port will not work! I'm using a VGA cord that has worked with other laptops before without issue. The laptop will not output to projector, external monitor, or a TV. Pressing the win-P combination brings up the ability to extend and duplicate my screen. When I change those settings, my screen resolution will change, but the external monitor/projector doesn't display anything. When I try to detect displays in my graphics properties, it just doesn't detect anything that's connected.
Is my VGA port faulty? Or does anyone have any suggestions on what else to try at this point? My laptop is still under warranty, so I suppose I could always send it in to be fixed.
Thanks for the help!

A:Latitude 3540, Win 8.1: VGA port faulty? Will not display to external monitors or projectors

did you get response on your question?

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Hallo Community, I am using my X1 Carbon gen 4th with an external Monitor via HDMI cable. Now i would like to try to add another external Monitor on it. Without any docking station would be perfect. I notice that there is also a mini display port on my device. I suppose I can connect one monitor via HDMI and the other with mini Displayport? Will these two monitors work together at the same time? I would like to ask, if anyone has experience about that?   Thanks for the  inputs in advance! 

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My Laptop: Helix (Type 3xxx) Laptop (ThinkPad)Serial Number: R9Z7FE3Machine Type Model: 369843GGot a mini display port connectorGRAPHIC Display adapter: INTEL HD 4000, Driver version: External Monitor: IIYAMA ProLite LE4041UHS-B1 4K (3840 x 2160)https://iiyama.com/gb_en/products/prolite-le4041uhs-b1/Interfaces & connectors Headphone connectorYesVideo INVGA, DVI, 2x HDMI, DisplayPortVideo OUTDisplayPort (daisy chain)Audion INMiniJackAudio OUTMiniJack, speakersControlsRS232C (IN/OUT) The monitor comes with it a mini display port to display port cable. My questions:Q1. Can I get 4k 3840 x 2160 resolution @ 60 Hz if I connect the monitor to the laptop by using the aforementioned cable?Q2. if I decide to daisy chain via displayport the monitor to another monitor with the  same specification what is the maximum resolution and hz I can get in the second monitor?  Thanks in advance  

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The title says it all. I'm very frustrated with this problem since I really need to connect my laptop to an external monitor for work. I've read and tried all relative topics in this and intel forums (e. g: https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/Yoga-920-can-t-connect-to-any-external-mon...), have done all steps mentioned (including firmware, bios and windows update, windows reset, ...) but the problem still persists. Apparently, most users that had faced the same problem been able to get it worked after installing "Type C Firmware for Windows 10 (64-bit)" or the BIOS update provided by Lenovo. I installed them successfully but nothing changed. I am sure it is a software issue since there is no sign of any hardware one (all devices are fine as device manager shows and diagnostics app found no problem). It was just working fine until suddenly stopped working (probably after some recent windows update). I would greatly appreciate any help.

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My computer still starts up making the same sounds and lights and such as usual, but there is no longer any signal to my monitor, mouse, keyboard, or speakers. I discovered this upon trying to wake it from sleep mode, the computer woke up, but no lights turned on on the keyboard, no sound came out of the speakers, and my monitor said no signal.

This happened once before, and we took it to a local repair place. They hooked it up to their monitor and keyboard and it worked fine. I've tested my monitor on another computer and it works just fine, as well as the rest of the hardware. Last time they said something had likely unseated itself, and the ride in the car had reseated it. What should I try?

A:My computer is no longer sending signals to any of my external hardware

Take it back to the local repair place... Have them check it once more

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