I have a ThinkPad P15 that has an Nvidia T1000 alongside the Intel integrated graphics. I am trying to drive 2 1440p monitors (identical resolution) over Displayport through a USB-C dock. I have a T14 that can drive both monitors just fine (AMD graphics), and on Windows they work as well.
Both monitors show up in KDE monitor settings, and both show up in the Nvidia-settings manager, but one is always blank (black, no output). How do I get both external monitors working? Is it even possible or worth trying this way?
The drivers installed are the proprietary glG05 ones.
There’s a long, long, long list of Nvidia threads all over the internet, but it seems still every problem is somehow unique.
This is a work machine, and I’ve never used Nvidia before, apologies for being a total n00b.
XRANDR output
crc@localhost:~> xrandr
Screen 0: minimum 8 x 8, current 5120 x 2520, maximum 32767 x 32767
DP-3.2 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 337mm
2560x1440 75.00*+ 59.95
1920x1080 60.00 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-3.3 connected 2560x1440+2560+0 (normal left inverted right x axis y axis) 597mm x 337
mm
2560x1440 75.00*+ 59.95
1920x1080 60.00 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
eDP-1-1 connected primary 1920x1080+640+1440 (normal left inverted right x axis y axis)
344mm x 194mm
1920x1080 60.00*+ 48.00
crc@localhost:~>
I have not tried it with the free (Noveau) drivers, but am not able to get any external monitor over Thunderbolt or USB-C without the Nvidia card it seems (unless I wanted one monitor connected to a very impractical side HDMI port).
xrandr <…> --auto does not seem to do anything, I get “Can’t open display!” as a response.
The blank screen persists across IceWM, Gnome, and SDDM. The screen is “seen” by all applications, but output is completely blank.
It’s not even in sleep mode–the screen shows input, but does not display anything.
$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x24e; cap: 0x1 (Source Output); crtcs: 4; outputs: 7; associated provid
ers: 1; name: NVIDIA-0
output DP-0
output DP-1
output DP-2
output HDMI-0
output DP-3
output DP-3.2
output DP-3.3
Provider 1: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload, Sink Offload
); crtcs: 3; outputs: 1; associated providers: 1; name: modesetting
output eDP-1-1
$ xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
Screen 0: minimum 8 x 8, current 5120 x 2520, maximum 32767 x 32767
eDP-1-1 connected primary 1920x1080+640+1440 (normal left inverted right x axis y axis)
344mm x 194mm
DP-3.3 connected 2560x1440+2560+0 (normal left inverted right x axis y axis) 597mm x 337
mm
DP-3.2 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 337mm
2560x1440 75.00*+ 59.95
2560x1440 75.00*+ 59.95
1920x1080 60.00*+ 48.00
<…> needs to be replaced with an appropriate output name, which in your case seems to be DP-3.3. But, one could try any of the output names that might be equivalent. Do the xrandr output names match the names found from the following?:
ls -1 /sys/class/drm/
If not, you could try xrandr --output <…> --auto using any of the /sys/class/drm/ names.
Are you using suse-prime? If not, this could be your issue. Special configuration is required for Optimus, which is the usual name for the combination of both Intel IGP and NVidia GPU installed in a laptop. I’m thinking if not using suse-prime is not your issue, that this will turn out to be an issue for NVidia’s proprietary driver programmers to solve.
If you select less than 2560x1440 on either or both displays, do they both light up?
Is there a BIOS option to enable more Pre-Allocated RAM (DVMT?) used by the the iGPU? Does selecting more than the default change anything?
I’m running low on ideas. I’d go ahead and try all DP-x connections, and the HDMI, with --auto just to be sure, and I’d try switching to whatever other options suse-prime offers; beyond that, reinstalling NVidia’s drivers; and if nothing there, an NVidia-specific forum, and/or an NVidia bug tracker report. I think I might go ahead and open an openSUSE bug report first, since xrandr is claiming DP-3.3 is connected and running at the display’s native resolution.
Changing resolution unfortunately does not change the behaviour–one screen is still “alive” but blank.
I can also report that the same issue persists on Windows now, which leads me to suspect a recent firmware update for the dock that I am using…
I don’t know a lot about the DisplayPort standard, but it seems like a difference in versions on the monitors may be having an effect…
At this point, I’ve accepted a workaround witha very long HDMI cable, and will keep poking at the setup when I get a chance. It’s annoying, but not the end of the world (or even dual-monitor setup).
I’d like to thank you, mrmazda, for your help with this problem, as ill-explained and confusing as it has been!
This is Quadro T1000 GPU.
Test newer R510 U3 (511.x) driver with Windows.
Test G06 driver with Linux. Uninstall nouveau driver before installing Nvidia proprietary driver.
You may use TB dock. Check what port you’re using - USB or TB.
I installed the G06 drivers, but then I receive ‘Video card not detected’ when I try to run prime-select.
That was my initial thought (that this card was newer), but perhaps I installed it incorrectly?
I believe I need the libdrm_nouveau2 package, correct? I’ve removed all other nouveau packages, but zypper wants to purge nearly 200 packages if I remove the libdrm one.
I just installed the G06 drivers now that I have some time, and they don’t seem to see the card at all. (Thankfully I can snapper rollback to the G05 ones if that is needed)
This is with the G06 drivers installed:
xrandr --listproviders
No protocol specified
Providers: number : 1
Provider 0: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload, Sink Offload); crtcs: 3; outputs: 1; asso
ciated providers: 0; name: modesetting
output eDP-1
sudo prime-select nvidia
[sudo] password for root:
Preparing first configuration
ERROR: Unable to query GPU information
Configuration failed