Comment 13 for bug 1930733

I posted this on the NVIDIA forums, but thought it might be helpful to cross-post here.

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I just tried the 460 server driver solution. This did not work for me and I still have the display port bug.

I have an AMD 3800X, 64 gb ram, rtx 2080 super, fresh install of Ubuntu 20.04 kernel 5.8.0-55, with 3 identical 4K monitors, (1 on HDMI, 2 on DP). The opensource driver continues to work just fine, but we need CUDA for our science to continue.

Here are the outputs from nvidia-smi, uname -r, and xrandr. Note that all monitors should have 4K options.

'''
(base) x@x:~$ nvidia-smi
Wed Jun 9 17:18:16 2021
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 460.73.01 Driver Version: 460.73.01 CUDA Version: 11.2 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 GeForce RTX 208... Off | 00000000:0E:00.0 On | N/A |
| 0% 45C P5 17W / 250W | 702MiB / 7981MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 918 G /usr/lib/xorg/Xorg 198MiB |
| 0 N/A N/A 1466 G /usr/lib/xorg/Xorg 349MiB |
| 0 N/A N/A 1603 G /usr/bin/gnome-shell 137MiB |
| 0 N/A N/A 2014 G gnome-control-center 2MiB |
+-----------------------------------------------------------------------------+
(base) x@x:~$ uname -r
5.8.0-55-generic
(base) x@x:~$
(base) x@x:~$ xrandr
Screen 0: minimum 8 x 8, current 7680 x 2160, maximum 32767 x 32767
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1920x1080+3840+0 (normal left inverted right x axis y axis) 1110mm x 620mm
   1920x1080 60.00 + 59.94 29.97* 23.98
   1680x1050 59.95
   1440x900 59.89
   1360x768 60.02
   1280x1024 75.02 60.02
   1280x960 60.00
   1280x800 59.81
   1280x720 60.00 59.94 29.97 23.98
   1152x864 75.00
   1024x768 75.03 70.07 60.00
   800x600 75.00 72.19 60.32
   720x480 59.94
   640x480 75.00 72.81 59.94 59.93
HDMI-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 800mm x 450mm
   3840x2160 30.00*+ 59.94 29.97 23.98 23.98
   4096x2160 59.94 29.97 24.00 23.98
   1920x1080 60.00 59.94 29.97 23.98
   1680x1050 59.95
   1440x900 59.89
   1360x768 60.02
   1280x1024 75.02 60.02
   1280x960 60.00
   1280x800 59.81
   1280x720 60.00 59.94 29.97 23.98
   1152x864 75.00
   1024x768 75.03 70.07 60.00
   800x600 75.00 72.19 60.32
   720x480 59.94
   640x480 75.00 72.81 59.94 59.93
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 connected 1920x1080+5760+0 (normal left inverted right x axis y axis) 800mm x 450mm
   1920x1080 60.00*+ 59.94 29.97 23.98
   1680x1050 59.95
   1440x900 59.89
   1360x768 60.02
   1280x1024 75.02 60.02
   1280x960 60.00
   1280x800 59.81
   1280x720 60.00 59.94 29.97 23.98
   1152x864 75.00
   1024x768 75.03 70.07 60.00
   800x600 75.00 72.19 60.32
   720x480 59.94
   640x480 75.00 72.81 59.94 59.93
USB-C-0 disconnected (normal left inverted right x axis y axis)

'''

I tried the nvidia-driver-460-server solution. Sadly it did not work for me.

The display port connected monitor resolutions are not correct with the 460.73.01 driver version showing 1080p when they should be 4K.