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Dual Monitors (DisplayPort) not working on Pro Side Dock (40AH) with T480

Q: Dual Monitors (DisplayPort) not working on Pro Side Dock (40AH) with T480

I have two 27" 2560x1440 60hz monitors that are plugged into the new Pro side-connect dock (40AH) with a new T480 (Intel 620 integrated graphics) in Windows 10 Pro. I can get either monitor to work fine with the dock individually, but trying to run both simultaneously by extending or duplicating the desktop between them seems to fail as selecting either option under Display Settings just makes the primary monitor black out for a few seconds then come back - the secondary monitor stays black. There's no error msg or popup that would help me investigate further unfortunately. I'm trying this with the T480's lid closed, and I'm running the latest 1.14 BIOS update and latest Intel HD graphics drivers. This setup worked fine on my old OneLink dock and X1 Carbon previously, so I don't think it's an issue with the monitors themselves. Anyone have a similar setup with the new Pro dock that's working?

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RELEVANCY SCORE 200
Preferred Solution: Dual Monitors (DisplayPort) not working on Pro Side Dock (40AH) with T480

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.)

RELEVANCY SCORE 98.8

Not able to get two monitors (Samsung S27E450) plugged into a ThinkPad Thunderbolt 3 docking unit to work with my X1 Yoga (Gen 2).   Montiors connected to docking via DisplayPort cables.   Windows 10 shows the monitors showing up as "Generic PnP" so something is being recognized.  Tried deleting the device in Device Manager, reboot.  Not finding the drivers on the Samsung site.   Any help appreciated. 

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RELEVANCY SCORE 87.6

I would like to use my T430s with two external displays, for a total of 3 displays. My configuration:T430s with NVS 5200 (Win 7 professional)Mini Dock Series 3 (4337)external monitor 1 connected to DVI on the dockexternal monitor 2 connected to VGA on the dock The system detects both monitors fine, but will only allow me to extend desktop to one of them at a time. Can you guys help me? My understanding is that it should work just fine with my configuration.


























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RELEVANCY SCORE 87.2

Hi guys, I have a ThinkPad T480 combined with a Pro dock (side). I was hoping to use 3 external monitors (not including the laptop screen). The pro dock only has 2 display ports and the laptop has a HDMI port which i was hoping to all use to get my 3 displays.My setup is 2 VGA external monitors to display port adapters and 1 hdmi monitor to the laptops hdmi port directly. 2 display port monitors display fine, however the HDMI display goes black. If i un dock the laptop, the HDMI monitor works.Can i not output all 3 at the same time, i know the laptops chipset allows 3 monitors.I was thinking of buying a USB C to HDMI adapter for the 3rd monitor, maybe this would resolve it? thanks in advance

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RELEVANCY SCORE 86

Hi. I've read a ton of topics similar to this but haven't found the solution. I have a ThinkPad T480, Pro Docking Station and USB-C Travel Hub. What are my possibilities to connect the 3rd external display?I have tested:Dock DP1 + Dock DP2 + T480 HDMIDock DP1 + Dock DP2 + USB-C Hub HDMIDock DP1 + Dock DP2 + USB-C Hub VGAUnfortunately, Hub doesn't seem to work properly, when connected to USB-C port in Pro Dock. It works fine when connected directly to T480, but I can't do it while the notebook is docked. The lid is closed and set to do nothing both on battery and charging state. Is upgrading to Elite Docking Station my only option?

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RELEVANCY SCORE 86

Hi Guys,I have a T480 laptop with a pro dock docking station and 3 monitors i want to try to get working.2 of the monitors are working fine via a VGA > DP adapter. The 3rd i bought a USB-C to HDMI adapter, though i cannot get this to work, even with the other two monitors disconnected.If the laptops undocked and the 3rd monitor is connected to the USB-C port, it works. Has anyone had luck with 3 monitors on this docking station? I have been considering a display port hub, can we use adapters with these hubs ok or does it only work if the cable is solely DP Thanks guys

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RELEVANCY SCORE 83.2

Hello, Looking for recommendations for a docking station for Thinkpad T480, with Intel video,  that will support 3 external monitors (all) at 2560??1440 resolution. Thanks

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RELEVANCY SCORE 82.8

I'm trying to use 3 external monitors on my T470s, but it's only giving me the option to select 2 of the 3 external monitors when all three are hooked up.  I'd like to disable my built-in display because it's smaller and darker, but it doesn't give me the option to select anything else for the 3rd slot.  I've tried both HDMI ports on the dock and on the PC with no success.  Is it even possible to have 3 extended (independent) external displays using this laptops hardware?

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RELEVANCY SCORE 81.2

Hi I have a X230 (model 2357G) with a type 4338 dock. I'm currently running dual 1920x108 monitors via the dual DVI ports in the dock. But I wonder if the dual Displayports in the dock can handle something with a higher resolution like dual 3840x2160 monitors ?ThanksMichael













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A:Max resolution X230 with dock dual port Displayport

Hi MikBoj,
 
Welcome to Lenovo Community!
 
As per the query we understood that you are looking for the details on screen resolution on your ThinkPad X230.
 
The maximum resolution for External monitor connected through DVI port is 1920 x 1200 on ThinkPad Mini Dock Plus Series 3, that means it will not support 3840x2160 resolution.
 
Please click here for complete details for ThinkPad Mini Dock Plus Series 3.
 
Hope this helps.
 
Best regards,
Hemanth Kumar





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RELEVANCY SCORE 80.8

Hello, I'm wondering if it's possible to have a dual monitors on the HP ProDesk 400 G2.5 using both the VGA and DisplayPort at the same time. Will this allow me to extend the display to both monitors? If not, what will I need to purchase to gain this capability? Thanks,John

A:Using VGA in conjunction with DisplayPort for dual monitors ...

The VGA port and Display Port perform the same function just in different ways.  VGA is analog and Display Port is digital.  Unfortunately, it's not going to work the way you think.  You will be looking at the same information on two different monitors without the ability to drag and drop from one to the other.  In order to have a true dual monitor experience, you would need to purchase an inexpensive video card like the VisionTek Radeon PCI card which is specifically designed for this functionality.  This is due to the fact that the dual monitor ability has to be configured via the software that comes with the stand alone card. I hope this helps.

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RELEVANCY SCORE 80

All driver and bios are fully updated.When I drop the x1c into the dock I can get the HDMI to work but the 2x DisplayPort are not detected. Even just one Displayport can't be detected.The monitors are2 60hz LG 34" ultrawides. The dock has worked flawlessly until 2 days ago.  Help, I am frustrated. 

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RELEVANCY SCORE 78

Has anyone tried using the USB-C as a third display port for HDMI or DP? I'm aware that the dock only has 2 DP outputs, but I don't see why a USB-HDMI connection wouldn't work.  Thank you,Taylor

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RELEVANCY SCORE 76.4

Displayport not working on dock. It works when I connect it to my T420 displayport. Anyone knows what the issue might be? Dock is charging. USB seems not to be working though.

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RELEVANCY SCORE 76.4

I have a Dell Latitude E7450 laptop with a E-Port Plus II port replicator connected to two external monitors using DisplayPort which will not output to multiple monitors.
I have another Dell model and when placed on the port replicator with two external monitors connected, booting into BIOS/UEFI the screen is cloned onto each monitor. However, when doing the same with a brand new Dell Latitude E7450 only one screen is active - the other is off. Within Windows itself, I can only have 1 monitor connected to the port replicator. If I undock, I can run 3 monitors independently indicating an issue with the dock rather than a hardware limitation with the laptop itself.
I believe the above tests eliminates the OS or driver issue and highlights a compatibility issue between the new Dell Latitude E7450 laptop and E-Port Plus II port replicator. I have tried this on 2 separate machines with the same results. I have also updated both the graphics drivers (Version 10.18.14.4170, A16) and the BIOS (Version A04) to the latest releases. I have also tried using DVI cables as well as swapping out the port replicators. Nothing works. In Windows 8.1 itself, it actually shows as two monitors active, but one is not on. If I swap out the monitors to a different brand, I get the same result.
Is there a BIOS/UEFI setting I need to change? Is there a newer port replicator or update I need?

A:Dell Latitude E7450 compatibility with E-Port Plus II with external Dual DisplayPort monitors

Did you resolve this issue and, if so, how? I have the same laptop (but running Windows 10) and the same docking station with the same results.

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RELEVANCY SCORE 76

Hi, I have a T480 Type 20L6 Thinkpad (20L6S7PC0J)Today i recieved a Thunderbolt 3 Doc type 40ACMonitor is connected to VGA port.  The only thing it is doing is charging my laptop and providing me display. .All other USB ports are not working. My Keyboard/mouse is not getting detected.  Need a solution.  Regards,Aamir Mehboob

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RELEVANCY SCORE 76

Hi, We have a Lenovo T480 in a corporate environment. Our customer uses this with docking station with two screens extended, wired periferials (keyboard and mouse). Both screens working via display port. We have a SD20Q11985 ThinkPad Pro Docking Station.Our proplem is when the user put on the notebook to the docking station the USB connectors (all of them) don't want to work, we tried to used them many different ways. The screen and the power cord is working properly only the USB connectors are useless. We refreshed everything on the notebook and the docking station we have the latest version everywehere and this is still not working. If we plug in the periferials to the docking station and turn on it the keyboard leds rarely blinking. janszo

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RELEVANCY SCORE 76

Is X1 Carbon 6th gen capable of driving dual [email protected] displays?X1 Carbon 6th gen has dual TB3 with 4xPCIe lanes, so bandwidth should be sufficent right? How about when connected to the new side-dock, is that capable of dual [email protected] displays? I'm talking about this dock:https://support.lenovo.com/si/en/solutions/pd500174ThinkPad Pro Docking Station (with side-connector)PN: 40AH0135US I could not find any official information on this, it is available for older docks, but not this new side-dock.    

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RELEVANCY SCORE 75.6

We have a few Lenovo displays we are replacing and wanted to get some USB-C displays for our few MacBook Pro users, but also work with our OneLink Pro & Ultra Docks. Ultra Dock works great with DisplayPort & HDMI. The MacBook Pro's work great with USB-C and Apple's USB to ethernet gets us all set there. The issue is the X1 (gen 3) with OneLink Pro dock. When we setup the dock with DisplayPort it shows the display is connected in the Display Properties, along with resolution and extended desktop, but the display itself shows nothing and has an orange light. We tried 3 different docks and laptops, 2 different P24h displays, and 3 different DisplayPort cables. Confirmed both the display and dock support DisplayPort 1.2. Any idea on what I can do to get this going? So far this is the best display we could find that covers all our bases for our needs.  

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RELEVANCY SCORE 75.2

I'm using the 40AH ("Pro") dock.  I tried connecting a third monitor to a HDMI to DVI adapter, and plugging that into the side HDMI port.  The laptop doesn't see this third display at all.  Nothing there.   I'm trying to determine if this is supported and maybe it's just that my adapter is bad.

A:T580 with 40AH dock -- can I use three external displays?

Update:I just took the laptop off the dock and connected this monitor with the HDMI-DVI adapter and it worked that way. So I'm thinking that this dock (or laptop) just does not allow three external display this way.Is there some other way? Can I use a USB adapter?

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RELEVANCY SCORE 74.4

Hi, I have Lenovo ThinkPad T480 with Windows 10 Pro and USB-C Dock. Iam trying use two external monitors of which one is 4K monitor and other standard HD. Iam using Display cables. Seems that 4K resolution is not available at all.With this setup maximum resolution is only 2560 x 1440 when using only 4K monitor and only 1680 x 1050 for both monitors if I connect them both.   Is this really the situation with my setup? Does T480 even support 4K monitor? 

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RELEVANCY SCORE 74

I have the Lenovo P50 workstation dock with 2 Dell P2715q monitors. The P50 is the i7-6820, 16gb, m2000m, 4k, 512gb samsung m.2. (I would have gotten the xeon, but after waiting 2+ months of my lenovo rep telling me every 2 weeks it would be available in 2 more weeks I gave up hope).When I have both monitors plugged into the Dock, only one will run at 4k and the other at 1080p. The dock says both displayports are 1.2, am I doing something wrong? It will run the laptop display and 1 monitor at 4k but not both monitors.











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A:Lenovo P50 Workstation Dock Dual 4k Monitors

I use the dock connect to my DELL UP2715K which has 5k reslotion, it only support 2440*1560.

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RELEVANCY SCORE 74

Hello,I am using a brand new T490 notebook (Type 20N2, 20N3) connected to a ThinkPad USB-C Dock Gen 2 (40AS0090US) dock. Connected to the dock are two 2560 x 1440p 60hz monitors. Both using the DisplayPort connectors of the dock. On one monitor, the resolution is running correctly and at 60hz. On the secondary monitor, the resolution is stuck at 1920 x 1080p at 29hz. All drivers and firmware is updated. This dock supports three external displays with 4K resolutions. Any assistance on why one monitor is stuck at 1080p and not being detected as 2K would be appreciated. Thanks.

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RELEVANCY SCORE 73.6

Hi!X1 Carbon 6th Gen, connected to two seperate (home/work) 40AH docks running different 4k monitors @ 60hz via DP has recently started to blank / lose sync to the connected external monitors after the recent firmware upgrade available via Lenovo Companion and matched here: https://download.lenovo.com/consumer/options/n20pf03w.exe Prior to this firmware upgrade, both docks and their respective monitors were functioning entirely normally. The firmware has been pinpointed as the ugprade occured at work first (which started exhibiting the fault) whilst home was OK, then when the firmware was applied to home the fault began to occur. There seems to be no reason as to why the screen blanking occurs, the monitors exhibit symptoms of a cable being disconnected for a short period and then reconnected. I can only assume there is an issue with the firmware on the DP component on the docks. The OS does not seem to record any connected hardware change in logs (as if the dock was disconnected via power/data) rather it seems only the output of the dock to the monitors is faulting. All other system upgrades have been applied via Lenovo Companion and/or via the website drivers list. The fault seems to be exhibited during fast video / screen switching within the OS (Windows 10). Although most frequently during large excel documents (lots of horiztonal and vertical scrolling) Seeking assistance and/or the ability to downgrade the DP firmware on the docks to return... Read more

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RELEVANCY SCORE 73.6

Title says all I guess. Mouse and keyboard are not working though the dock (the new mechanical/thunderbolt kind) under the pre-installed windows as well as with ubuntu 18.04 alpha.The windows/Intel thunderbolt software does not show devices as well.I heard that I should've seen dialogs asking for permission to use the dock as  a trusted device of somekind. I haven't seen this.Strangely network and screens work fine. I've looked at driver updates etc, but I seem to be up-to-date. Any ideas?

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RELEVANCY SCORE 73.2

Hi All OK, so I have a W530 with the mini dock 170W: great machine.  Originally I just had one external LCD, and no issues. I now have another LED, and I get screen flicker on both external monitors (laptop screen is fine). Details:-Windows 8BIOS 2.51Graphics: Quadro K2000M with driver 310.90 (updated to latest in hope it would fix issue)Of extra note: I have a dock at home and work, and both have dual monitors.  At home connection is DVI for both. At work, one is DisplayPort and the other DVI. 3 displays are Samsung, and 1 a Dell...all around 23/24" size. The setup at work did work without flicker at one point with two displays...it was flickering, and I played around with cables, and rebooted, etc. and after lots of time/frustration the flicker stopped...but since docking again, has started :-( I have read lots of google about ground loop issue: bit concerned about ditching grounds on monitors, and would have thought that if this is such a common issue, there would be a better solution supported/provided by the laptop manufacturers...so have not followed this suggestion... If anyone else is running a similar system without flicker it would be interesting to get your exact system spec to help determine which aspect of the system causes this... RegardsPaul.

A:W530 with Dock and dual external monitors flicker

I would make sure the notebook is firmly pushed down and into the connector on the dock.  I usually dock my machine fairly carefully, then push it down firmly after I know it is lined up properly.

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RELEVANCY SCORE 73.2

Hi all,
Currently running a Latitude 5480 through a WD15 Dock. I have two monitors but can't get both to display. The dock itself has a number of connection options however it doesn't have two VGA ports. If I connect one of the monitors to the VGA port that works ok. If I use an adapter on the other VGA monitor to plug into the HDMI port on the dock it doesn't detect it on the Latitude.
Anybody successfully managed to get two VGA monitors to connect using the WD15, and if so how did you manage it?

A:Latitude 5480, WD15 dock, Dual monitors

Let's backup. What are the two specific monitor models? Link to the specific adapter you are using to try to connect the second monitor to the WD15. Read through the WD15 article, "How to Use and Troubleshoot the Dell Dock WD15".

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RELEVANCY SCORE 73.2

HP Zbook Studio G3 connected to two ASUS 24" HDMI screens (VE248H with different firmware) via the HP Tunderbolt Dock 3.  Screens are connected via Displayport to HDMI adapters. Upon boot up, one of the screens does not sync- which one is random. If it is the primary screen, the symptom is a loop of the screen blacking out ever 3 seconds or so for 2 seconds then lighting up again. Sometimes this is accompanied with an audible click. If it is the secondary screen the loop is the image wobbles every 5 seconds or so, blacks out briefly then comes back on.  I have updated the firmware on the dock, the BIOS, and all the drivers.  The daily steps to resolve the problem involve the Multiple displays option in Window's Screen Resolution. By changing it back and forth between the individual displays and the "Extend these displays" option I eventually get the screens to stabilize. Any help would be nice. Wasting 5 - 10 minutes each morning on this is frustrating.

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RELEVANCY SCORE 72.4

It's a brand new T495 on ThinkPad Pro Dock (40AH0135US). Here's what I've tried so far: -Reseated all connections and tried differnt DP cables. -Updated Dock Firmware-Downloaded/installed latest graphics using AMDs detect tool.-Tried a different same model dock.-Just for fun, we docked a T480s into it and there was no issues.  After the AMD drivers install, the monitors will work. But if you undock and redock they shut off and won't be detected.Shutting down the laptop and starting it up while on the dock will detect the monitors. But if you undock, and redock they won't come back.Lastly, disabling the graphics adappter under Device Manager and re-enabling it will detect the monitors again. But again, if you undock and re-dock, they won't be detected. Thanks in advance for any suggestions. 

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RELEVANCY SCORE 72.4

After latest update with Lenovo System Update software I can't get the 4k resolution on both external monitors, one have 4k and other only FullHD. When I unplug one of them, the lasting monitor can get the 4k resolution, pluging back the other monitor restores the problem, but now the latest connected monitor have only FullHD resolution.On System Update software, in View Installation History tab on Status of "ThinkPad Pro Docking Station DP Hub FW Utility", version 5.03.005 it says: "Did not install".When I try install and run https://pcsupport.lenovo.com/pl/pl/downloads/ds505699, I'm getting this error:"Cannot detect ThinkPad Docking Station. Pease ensure that the Dock is connected to your computer"

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RELEVANCY SCORE 71.6

I am using this setup and getting blurry text on my Dell 2008WFP, but not on the other monitor which is a Dell U2412M.  Both are connected through he 2 separate DisplayPorts. I have been using this same setup with no issues for 5 years through my Lenovo T440p, older compatible Lenovo Pro Dock station and a DisplayPort connection to the 2008WFP and VGA to the U2412M (the older pro docks could only do dual monitors if one of the two connections was VGA). I have tried:Swapping cablesSwapping cordsToggling Windows 10 display settings:On/Off ?Fix scaling for apps?Different numbers for ?Enter a custom scaling size between 100%-500%.Updating the pro dock firmware.Updating the Dell monitor driver.Updating all Lenovo and Windows updatesI have also called into Lenovo support, but to no avail. Thanks in advance

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RELEVANCY SCORE 70.8

From my laptop xps 15 9550, i couldn't figure out how to extent properly 4k resolution on each monitor.
If I refer the dell website, I am supposed to be able to dual display 4k resolution on each monitor:http://www.dell.com/support/article/us/en/19/SLN301105
Dell Thunderbolt Dock TB15

Resolutions
Number of Displays
Refresh Rate
1920 x 1080
3
60 Hz
1920 x 1200
3
60 Hz
2048 x 1356
3
60 Hz
2560 x 1080
3
60 Hz
2560 x 1440
3
60 Hz
2560 x 1600
3
60 Hz
3440 x 1440
2
60 Hz
3840 x 2160
2
60 Hz


Whatever I tried several as combinaisons in extended desktop, i cannot get the 4K (but only the 2K max) at 59/60hz, i cannot even get the 4k in 30hz available in the HD graphics control panel:Primary display : dell 1 u2717d
Secondary display : dell 2 u2717d
Built-in display : laptop xps 15 9550 in on or none

Do you guys have the same issue ? or anyone already solved it ?

(The TechCenter asked me to use mDP and DP instead of using mDP and HDMI, the issue remains the same fyi whatever the combo between mDP, DP and HDMI)

Thanks

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RELEVANCY SCORE 70.8

I am trying to connect two Sceptre U27 4k monitors via display port to the Thinkpad Ultra Dock 40A2 and i'm not having any luck. With a Thinkpad T470s) I can get 1 working but the other monitor just doesn't see a signal. The only setup i've gotten to work is one monitor at 4k @ 30hz on a Display Port and the other at 1920x1080 via DVI I have tried:both display port, 4k @ 30hz (<--- what i'd like to get working since both at 60hz isn't an option with this dock I don't believe)one display port, 4k @ 30hz, one hdmi 4k @ 30hz (via hdmi on the back of the dock)one display port, 4k @ 30hz, one hdmi via hdmi port on the side of the laptop Is anyone familiar with what magic combination of cables and ports would allow me to run both 4k monitors at 30hz, via the two display ports at the back of this dock? I would think updating the docks firmware may help ( https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/ThinkPad-Pro-Dock-ThinkPad-Ultra-Dock-or-Thin... ) but there inlies another issue.  Our corporate image on these laptops is RHEL 7.5 and I do not see an option to flash any firmware available from linux unfortunately. Any help would be greatly appreciated. 

A:T470s and Ultra Dock 40a2 dual 4k display port monitors not functioning

I'm thinking my best bet may be to use a Display Port to USB-C/Thunderbolt 3 cable for one monitor and the docking stations display port for the other.

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RELEVANCY SCORE 70.8

I am trying to connect two Sceptre U27 4k monitors via display port to the Thinkpad Ultra Dock 40A2 and i'm not having any luck. With a Thinkpad x470s) I can get 1 working but the other monitor just doesn't see a signal. The only setup i've gotten to work is one monitor at 4k @ 30hz on a Display Port and the other at 1920x1080 via DVI I have tried:both display port, 4k @ 30hz (<--- what i'd like to get working since both at 60hz isn't an option with this dock I don't believe)one display port, 4k @ 30hz, one hdmi 4k @ 30hz (via hdmi on the back of the dock)one display port, 4k @ 30hz, one hdmi via hdmi port on the side of the laptop Is anyone familiar with what magic combination of cables and ports would allow me to run both 4k monitors at 30hz, via the two display ports at the back of this dock? I would think updating the docks firmware may help ( https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/ThinkPad-Pro-Dock-ThinkPad-Ultra-Dock-or-Thin... ) but there inlies another issue.  Our corporate image on these laptops is RHEL 7.5 and I do not see an option to flash any firmware available from linux unfortunately. Any help would be greatly appreciated. 

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RELEVANCY SCORE 69.2

 Hello all, I am a solutions architect trying to solve an issue which I have never heard of before. Though others users are having this same issue, my experience has been different then what they have seen. First,The following are the Security options for Thunderbolt devices as per user guide

No Security: Allow Thunderbolt devices to be connected automatically.
User Authorization: Allow Thunderbolt devices to be connected after user authorization.
Secure Connect: Allow Thunderbolt devices to be connected with a saved key that has been approved by the user.
Display Port and USB: Allow only DisplayPort-compatible devices and USB devices to be connected. Thunderbolt devices are not allowed to be connectedI don't think this is entirely true or at least does not apply properly each time. My scenario:T480, T580, or Yoga x1 3rd genImaging with a standalone MDT environmentDevices come pre-configured from Lenovo with Thunderbolt 3 Security Options set to "User Authentication" Installing all the drivers in the latest SCCM driver packs that Lenovo offers - though the x1 3rd gen driver pack was missing on the site this morning. On some devices, this security option seems to do absolutely nothing. MDT uses the local "Administrator" account to perform post-OS items. I'd say about 75% of the devices reach their destination and the user logs in for the first time as a user, not an admin, and the dock functions properly; monitors/mice/keyboard/etc. work. 25% of ... Read more

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RELEVANCY SCORE 69.2

Hello, I have a brandnew X1 Carbon black 7th gen (20qd) with 2nd gen lenovo dock. I try to hook up 3 monitors, 2 display port and 1 hdmi. 2 moniors work but the 3rd displays at 640x480.All 3 are the same monitors, 24" viewsnoic non 4k.   I installed the newest drivers and that didn't seem to work. I am stumped, anyone have ideas? Thanks

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RELEVANCY SCORE 68.8

I have connected two Samsung 32' Monitors to a T470 that is docked on A Lenovo docking station. Only one Monitor will work at a time in extended mode. The computer doesn't seem to recognize both monitors. All Drivers are up to date. Display adapters and monitors. Any ideas why they won't work together in extended display mode? 

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RELEVANCY SCORE 68.8

I have connected two Samsung 32' Monitors to a T470 that is docked on A Lenovo docking station. Only one Monitor will work at a time in extended mode. The computer doesn't seem to recognize both monitors. All Drivers are up to date. Display adapters and monitors. Any ideas why they won't work together in extended display mode? 

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RELEVANCY SCORE 68.8

We have a few Yoga L370's that are connected to  USB-C docks. some have updated their Intel HD Graphics Driver to version 26.20.100.6913 via the System Update Software. After this update the external monitors stop displaying. The only way I could resolve was to roll back to the previous graphics driver. Is there a known issue between the USB-C dock and this video driver? Any help appreciated

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RELEVANCY SCORE 68

I am trying to connect mouse and keyboard to dock, but USBs are not working. I have a setup with two monitors and these are working just fine. I am using a Yoga S730 laptop and a Thinkpad Thuderbolt 3 dock (40ac). While using my work laptop(T480) everything is working... Anyone experiencing dock problems with yoga S730?

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RELEVANCY SCORE 68

I am trying to connect mouse and keyboard to dock, but USBs are not working. I have a setup with two monitors and these are working just fine. I am using a Yoga S730 laptop and a Thinkpad Thuderbolt 3 dock (40ac). While using my work laptop(T480) everything is working... Anyone experiencing dock problems with yoga S730?

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RELEVANCY SCORE 67.2

HiI have 2 Lenovo devices:-Lenovo ThinkPad X1 Yoga, i7-7500U, 16GB, SSD 512GB, WQHD OLED 14inch touch, LTE, W10P-Lenovo ThinkPad Thunderbolt 3 Dock - Port Replicator - (Thunderbolt 3) - GigE-And i have 2 monitors whit a DisplayPort connection. These are connected with the dock. What i try to do:I wont to work whit these 2 monitors and whit the monitor from the X1 Yoga itself. My Problem:It only works with 2 screens at the same time...- If the laptop is open. I can work whit the screen from the notebook and wiht 1 external monitor.- If I close the laptop. I can work whit both external monitors.- But when I open the laptop again. 1 Monitor turn into black. I updated everything whit the Lenovo System Update Tool. Everything is up-to-date.Also the Windows Updates are Up-to-date.Manually checked from the Intel website, also everything is up-to-date. Is there anyone else having this problem? Any advices?Thanks a lot & Greetings   

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RELEVANCY SCORE 66.8

Where can I get cables and adapters for the Dual-mode DisplayPort (DisplayPort++) output port.  I want to connect multiple monitors to my laptop for use at home, without buying a docking station.  I already have an old VGA monitor connected to the VGA output.  Are there any other options for connecting additional monitors other than the DisplayPort++ output and docking station?  I've searched Amazon, E-Bay, Best Buy, and nobody seems to have any cables or adaptors that support DisplayPort++.

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RELEVANCY SCORE 66

I have a work laptop that I want to connect at home using my two older DVI/VGA monitors. I am planning on buying the DisplayPort to DVI adapters, but I read the compatibility table in the middle of the following link and it does not list the T480: https://pcsupport.lenovo.com/us/en/solutions/migr-70321 I want to buy the DVI adapter, 45J7915. I am using the docking station, model 40AH. Thanks for your help! Zandro

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RELEVANCY SCORE 66

We recently moved from the Lenovo T470 to the T480. We have purchased two of the T480's, with both we have the same issue;The adapters we have used for the T470, won't work with the T480's. The ports do work with our usb-c displays.  Some background information, the monitors we are connecting too are both from Apple, Thunderbolt Display and the Cinema Display. We have no issue with the T470, with the same adapter. The adapter we are using is a Apple Thunderbolt 3 to thunderbolt 2. We have also tried other adapters from some aftermarket sellers.  What we have tried already:Several adapters, none work. Both portsWe have tried deactivating the security in the BIOS for the USB-C, just to make sure we tried everything, but also no succes. We have spoken to our Lenovo reseller for over an hour, but no succes or tips.. Checking the thunderbolt software, if it gets recognized or anything but no. If anyone could provide some insight into this issue would be greatly appreciated.  Thanks in advance!

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