nvidia-bug-report.log.gz (1.2 MB)
Previous forum posts： Ubuntu20.04 setted BaseMosaic on，screens have no signal - Graphics / Linux / Linux - NVIDIA Developer Forums
Different from last year’s post, please help…
After posting last year, due to the urgency of other projects, we didn’t study this problem again.Now I finally have time, so I come to study this problem again. I also hope experts can give me advice.
Now I have a lenovo P920 workstation with 4 graphics cards， QUADRO RTX 4000.Every graphics card connected to a 4K monitor using dp interface.
My OS is ubuntu20.04.3 lts, when i installed my os，I executed the following command：
sudo apt update
sudo apt upgrade
sudo ubuntu-drivers auto install
sudo reboot
After system restart，i run the command sudo nvidia-settings. In primary screen，I enable BaseMosaic ，and enabled other monitor with “Configuration : x screen 0”,then i apply settings and saved it in xorg.conf.
Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
BoardName “Quadro RTX 4000”
BusID “PCI:24:0:0”
EndSection
Section “Screen”
Identifier “Screen0”
Device “Device0”
Monitor “Monitor0”
DefaultDepth 24
Option “Stereo” “0”
Option “nvidiaXineramaInfoOrder” “DFP-2”
Option “metamodes” “GPU-3769bf8b-8596-42f1-4dd1-c937a9abd336.DP-2: nvidia-auto-select +0+0, GPU-89ee868c-a213-2a18-cd83-069d619e0603.DP-1-2: nvidia-auto-select +3840+0, GPU-49aa6c0e-7468-34a3-0816-813020bcb4a3.DP-2-2: nvidia-auto-select +7680+0, GPU-01cd901e-0b40-ee13-b697-49dc3377024b.DP-3-3: nvidia-auto-select +11520+0”
Option “MultiGPU” “Off”
Option “SLI” “Mosaic”
Option “BaseMosaic” “off”
SubSection “Display”
Depth 24
EndSubSection
Here：
Option “MultiGPU” “Off”
Option “SLI” “Mosaic”
Option “BaseMosaic” “off”
I read Chapter 30. Configuring SLI and Multi-GPU Mosaic,Document tips: Quadro Series graphics card, SLI mosaic for multi graphics card, multigpu for single graphics card, and basemosaic for geforce series.
So I set the xorg.conf as above.But it still doesn’t work，even I added the following configuration, which is also not worked：Option “AllowEmptyInitialConfiguration” “True” or Option “AllowEmptyInitialConfiguration”
Then i reboot again,After the restart, the displays (four monitors) all have no signal.But use other computer , i can connect the workstation with ssh.In /var/log/syslog ,i found this:
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA GLX Module 470.86 Tue Oct 26 21:51:04 UTC 2021
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA: The X server supports PRIME Render Offload.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(GPU-0): The “BaseMosaic” X configuration option should be used for
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(GPU-0): this configuration instead of the “SLI” “Mosaic” option.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(GPU-0): The “BaseMosaic” option will be assumed. Please see
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(GPU-0): Chapter 30: Configuring SLI and Multi-GPU Mosaic and
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(GPU-0): Appendix B: X Config Options for more information.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA(GPU-0): NVIDIA SLI enabled.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): Failed to select a display subsystem.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): Only one GPU will be used for this X screen.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): The NVIDIA graphics device PCI:24:0:0 is part of an active SLI
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): configuration and is currently unavailable for single GPU
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): rendering. Please see Chapter 30: Configuring SLI and
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): Multi-GPU Mosaic in the README for troubleshooting
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(GPU-0): information.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) *** Aborting ***
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(0): Failing initialization of X screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadModule: “nvidia”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “glxserver_nvidia”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) Unloading glxserver_nvidia
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “wfb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “fb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Depth 24, (–) framebuffer bpp 32
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (==) NVIDIA(G0): RGB weight 888
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (==) NVIDIA(G0): Default visual is TrueColor
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (==) NVIDIA(G0): Using gamma correction (1.0, 1.0, 1.0)
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) Applying OutputClass “nvidia” options to /dev/dri/card1
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “Stereo” “0”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “nvidiaXineramaInfoOrder” “DFP-2”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “SLI” “Mosaic”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “MultiGPU” “Off”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “BaseMosaic” “off”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Option “AllowEmptyInitialConfiguration”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): Stereo disabled by request
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): NVIDIA SLI Mosaic mode selected.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: () NVIDIA(G0): NVIDIA Multi-GPU disabled.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (WW) NVIDIA(G0): SLI is available only on screen 0. Disabling SLI.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(G0): Only one X screen is supported when SLI is enabled. Disabling
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(G0): this screen.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(G0): Failing initialization of X screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA(G1): (GPU-2) already has an X screen assigned; skipping this GPU
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA(G1): screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(G1): Failing initialization of X screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA(G2): (GPU-3) already has an X screen assigned; skipping this GPU
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) NVIDIA(G2): screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) NVIDIA(G2): Failing initialization of X screen
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadModule: “nvidia”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “wfb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “fb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadModule: “nvidia”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “wfb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “fb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadModule: “nvidia”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “wfb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (II) UnloadSubModule: “fb”
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) Screen(s) found, but none have a usable configuration.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE)
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: Fatal server error:
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) no screens found(EE)
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE)
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: Please consult the The X.Org Foundation support
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: #011 at http://wiki.x.org
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: for help.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) Please also check the log file at “/var/lib/gdm3/.local/share/xorg/Xorg.0.log” for additional information.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE)
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1787]: (EE) Server terminated with error (1). Closing log file.
Jan 26 15:23:55 hengda-ThinkStation-P920 /usr/lib/gdm3/gdm-x-session[1783]: Unable to run X server
Jan 26 15:23:55 hengda-ThinkStation-P920 gdm3: Child process -1783 was already dead.
Jan 26 15:23:55 hengda-ThinkStation-P920 systemd[1]: session-c1.scope: Succeeded.
Jan 26 15:23:55 hengda-ThinkStation-P920 goa-daemon[1825]: goa-daemon version 3.36.1 starting
…
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060551] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57d:0:0:0x00000057
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060605] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57e:1:0:0x00000057
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060651] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57e:0:0:0x00000057
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060694] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57e:3:0:0x00000057
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060737] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57e:5:0:0x00000057
Jan 26 15:24:12 hengda-ThinkStation-P920 kernel: [ 33.060779] nvidia-modeset: ERROR: GPU:0: Failed to query display engine channel state: 0x0000c57e:7:0:0x00000057
=========================================
According to the log file，it says i should use basemosaic，but if i set option basemosaic on，it is also no signal output to four monitors , as My post last year.
Use ssh i sudo vi /etc/X11/xorg.conf , changed Option “BaseMosaic” “on” to Option “BaseMosaic” “off”, Option “SLI” “Off” and reboot,then all four monitors have signal,
It’s puzzling if I install Ubuntu 20.04. Do the above mosaic settings, and there is no signal on the four monitors, but if I install Ubuntu 18. 04. Set the mosaic as above,it works! Then I upgrade OS to Ubuntu to 20.04 using the command:do-release-upgrade. Last year, I can bypass this problem and use it normally,means the four monitors all have single and work right . Why? Before and after the upgrade, xorg.conf has not changed.
This problem has bothered me for a long time. Is there a solution? I also read Chapter 30, so I used the option “SLI” “Mosaic”, but it really didn’t work.
=========
hengda@hengda-ThinkStation-P920:/etc/X11$ lspci | grep VGA
18:00.0 VGA compatible controller: NVIDIA Corporation TU104GL [Quadro RTX 4000] (rev a1)
3b:00.0 VGA compatible controller: NVIDIA Corporation TU104GL [Quadro RTX 4000] (rev a1)
86:00.0 VGA compatible controller: NVIDIA Corporation TU104GL [Quadro RTX 4000] (rev a1)
af:00.0 VGA compatible controller: NVIDIA Corporation TU104GL [Quadro RTX 4000] (rev a1)
hengda@hengda-ThinkStation-P920:/etc/X11$ lspci -t
-±[0000:d7]-±05.0
| ±05.2
| ±05.4
| ±0e.0
| ±0e.1
| ±0f.0
| ±0f.1
| ±12.0
| ±12.1
| ±12.2
| ±12.4
| ±12.5
| ±15.0
| ±16.0
| ±16.4
| -17.0
±[0000:ae]-±00.0-[af]–±00.0
| | ±00.1
| | ±00.2
| | -00.3
| ±05.0
| ±05.2
| ±05.4
| ±08.0
| ±09.0
| ±0a.0
| ±0a.1
| ±0a.2
| ±0a.3
| ±0a.4
| ±0a.5
| ±0a.6
| ±0a.7
| ±0b.0
| ±0b.1
| ±0b.2
| ±0b.3
| ±0c.0
| ±0c.1
| ±0c.2
| ±0c.3
| ±0c.4
| ±0c.5
| ±0c.6
| ±0c.7
| ±0d.0
| ±0d.1
| ±0d.2
| -0d.3
±[0000:85]-±00.0-[86]–±00.0
| | ±00.1
| | ±00.2
| | -00.3
| ±05.0
| ±05.2
| ±05.4
| ±08.0
| ±08.1
| ±08.2
| ±08.3
| ±08.4
| ±08.5
| ±08.6
| ±08.7
| ±09.0
| ±09.1
| ±09.2
| ±09.3
| ±09.4
| ±09.5
| ±09.6
| ±09.7
| ±0a.0
| ±0a.1
| ±0a.2
| ±0a.3
| ±0a.4
| ±0a.5
| ±0a.6
| ±0a.7
| ±0b.0
| ±0b.1
| ±0b.2
| ±0b.3
| ±0e.0
| ±0e.1
| ±0e.2
| ±0e.3
| ±0e.4
| ±0e.5
| ±0e.6
| ±0e.7
| ±0f.0
| ±0f.1
| ±0f.2
| ±0f.3
| ±0f.4
| ±0f.5
| ±0f.6
| ±0f.7
| ±10.0
| ±10.1
| ±10.2
| ±10.3
| ±10.4
| ±10.5
| ±10.6
| ±10.7
| ±11.0
| ±11.1
| ±11.2
| ±11.3
| ±1d.0
| ±1d.1
| ±1d.2
| ±1d.3
| ±1e.0
| ±1e.1
| ±1e.2
| ±1e.3
| ±1e.4
| ±1e.5
| -1e.6
±[0000:80]-±04.0
| ±04.1
| ±04.2
| ±04.3
| ±04.4
| ±04.5
| ±04.6
| ±04.7
| ±05.0
| ±05.2
| ±05.4
| ±08.0
| ±08.1
| -08.2
±[0000:5d]-±05.0
| ±05.2
| ±05.4
| ±0e.0
| ±0e.1
| ±0f.0
| ±0f.1
| ±12.0
| ±12.1
| ±12.2
| ±12.4
| ±12.5
| ±15.0
| ±16.0
| ±16.4
| -17.0
±[0000:3a]-±00.0-[3b]–±00.0
| | ±00.1
| | ±00.2
| | -00.3
| ±05.0
| ±05.2
| ±05.4
| ±08.0
| ±09.0
| ±0a.0
| ±0a.1
| ±0a.2
| ±0a.3
| ±0a.4
| ±0a.5
| ±0a.6
| ±0a.7
| ±0b.0
| ±0b.1
| ±0b.2
| ±0b.3
| ±0c.0
| ±0c.1
| ±0c.2
| ±0c.3
| ±0c.4
| ±0c.5
| ±0c.6
| ±0c.7
| ±0d.0
| ±0d.1
| ±0d.2
| -0d.3
±[0000:17]-±00.0-[18]–±00.0
| | ±00.1
| | ±00.2
| | -00.3
| ±05.0
| ±05.2
| ±05.4
| ±08.0
| ±08.1
| ±08.2
| ±08.3
| ±08.4
| ±08.5
| ±08.6
| ±08.7
| ±09.0
| ±09.1
| ±09.2
| ±09.3
| ±09.4
| ±09.5
| ±09.6
| ±09.7
| ±0a.0
| ±0a.1
| ±0a.2
| ±0a.3
| ±0a.4
| ±0a.5
| ±0a.6
| ±0a.7
| ±0b.0
| ±0b.1
| ±0b.2
| ±0b.3
| ±0e.0
| ±0e.1
| ±0e.2
| ±0e.3
| ±0e.4
| ±0e.5
| ±0e.6
| ±0e.7
| ±0f.0
| ±0f.1
| ±0f.2
| ±0f.3
| ±0f.4
| ±0f.5
| ±0f.6
| ±0f.7
| ±10.0
| ±10.1
| ±10.2
| ±10.3
| ±10.4
| ±10.5
| ±10.6
| ±10.7
| ±11.0
| ±11.1
| ±11.2
| ±11.3
| ±1d.0
| ±1d.1
| ±1d.2
| ±1d.3
| ±1e.0
| ±1e.1
| ±1e.2
| ±1e.3
| ±1e.4
| ±1e.5
| -1e.6
-[0000:00]-±00.0
±04.0
±04.1
±04.2
±04.3
±04.4
±04.5
±04.6
±04.7
±05.0
±05.2
±05.4
±08.0
±08.1
±08.2
±11.0
±11.1
±11.5
±14.0
±14.2
±16.0
±16.2
±16.3
±17.0
±1d.0-[01]–
±1d.2-[02]----00.0
±1f.0
±1f.2
±1f.3
±1f.4
±1f.5
-1f.6