Kernel does not show monitor attached to nvidia quadro P2000 : xrandr fails and monitor black therefore

[erichx]

Hi
nvidia PCI card does not present all display ports to the kernel

ls -l /sys/class/drm/*/status
-rw-r–r-- 1 root root 4096 25. Mär 02:45 /sys/class/drm/card0-DP-1/status
-rw-r–r-- 1 root root 4096 25. Mär 02:45 /sys/class/drm/card0-DP-2/status
-rw-r–r-- 1 root root 4096 25. Mär 02:45 /sys/class/drm/card0-HDMI-A-1/status
-rw-r–r-- 1 root root 4096 25. Mär 02:45 /sys/class/drm/card0-HDMI-A-2/status
-rw-r–r-- 1 root root 4096 25. Mär 02:45 /sys/class/drm/card0-HDMI-A-3/status
cat /sys/class/drm/*/status
disconnected
disconnected
connected
disconnected
disconnected
dmesg| grep nvidia
[ 2.933930] nvidia: loading out-of-tree module taints kernel.
[ 2.933939] nvidia: module license ‘NVIDIA’ taints kernel.
[ 2.946134] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[ 3.035663] nvidia-nvlink: Nvlink Core is being initialized, major device number 236
[ 3.036528] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[ 3.195746] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 525.147.05 Wed Oct 25 20:21:31 UTC 2023
[ 3.198139] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[ 3.198140] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1
[ 4.212425] audit: type=1400 audit(1711331032.200:6): apparmor=“STATUS” operation=“profile_load” profile=“unconfined” name=“nvidia_modprobe” pid=1331 comm=“apparmor_parser”
[ 4.212436] audit: type=1400 audit(1711331032.200:7): apparmor=“STATUS” operation=“profile_load” profile=“unconfined” name=“nvidia_modprobe//kmod” pid=1331 comm=“apparmor_parser”

so xorg cannot see the 2nd monitor connected to DP-3 or >.
I changed the connector to another socket, but it did not change the content of /sys/…
MS widow10 reports the Monitor as DVI , as I have a DP 2 DVI adapter for the monitor

How to set nvidia card Quadro P2000 to show all 8 display ports ? (4 internal, 4 on backplane)
my xorg.conf is hand made and surely not the last wisdom
xorg.conf with xinerama works, but has undisplayed parts, as monitors do not have the same size.
uploading nvidia-bug-report.log.gz (1.1 Mb) fails, ?
“Sorry, there was an error uploading nvidia-bug-report.log.gz. Please try again.” Chromium and firefox
My Intent is to use Intel GPU for graphics, and NVIDIA for CUDA etc.

[generix]

Please try to unzip and upload the log.

[erichx]

Sorry, there was an error uploading nvidia-bug-report.log. Please try again.

applies to all files .txt, .conf

[generix]

Please try uploading it to pastebin.

[erichx]

https://pastebin.com/XKRQcf8G xorg.conf.xinerama
xrandr skript - Pastebin.com xrandr script

nvidia-bug-report.log File too big !
Try this:
https://some server@.dyn.lihas.de/nvidia-bug-report.log

[generix]

Please delete /etc/X11/xorg.conf and set kernel parameter nvidia-drm.modeset=1
Please create /etc/X11/xorg.conf.d/nvidia-primary.conf

Section "OutputClass"
    Identifier "nvidia-primary"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "PrimaryGPU" "true"
EndSection

After login, please run xrandr --setprovideroutputsource modesetting NVIDIA-0 && xrandr --auto to enable output on the intel outputs.

[erichx]

That works like a charm - thanks

and then does not survive a reboot.
Need to repeat the command
xrandr --setprovideroutputsource modesetting NVIDIA-0 && xrandr --auto
and repeat Arandr in in the mate menu , to sort out my displays
I need this xrandr in /etc/X11/xsession.d for several users

[generix]

Yes, you need to set it to autostart. Which login manager are you using?

[erichx]

I use lightdm + mate , but I have 4 users on this host. So fixes should be on the X server level.
xrandr --setprovideroutputsource modesetting NVIDIA-0 && xrandr --auto
This takes about 5 seconds on the HDMI screen, until display shows up.

Output script of arandr - Pastebin.com

Xorg.0.log - Pastebin.com

On my previous installation I had it in /etc/X11/Xsessions.d/45-custom-xrandr-settings.sh. Which worked fine for many years( but on a single GPU installation).

[generix]

Lightdm starts the Xserver so its config is the correct location:
https://wiki.archlinux.org/title/NVIDIA_Optimus#LightDM

[erichx]

That works fine now.
My /etc/lightdm/display_setup.sh is now :

#!/bin/sh
xrandr --setprovideroutputsource modesetting NVIDIA-0
# xrandr --auto

xrandr --output DP-0 --off --output DP-1 --off --output DP-2 --off --output DP-3 --off --output DP-4 --off --output DP-5 --off --output DP-6 --off --output DP-7 --mode 1440x900 --pos 1920x0 --rotate normal --output HDMI-1-1 --mode 1920x1080 --pos 0x0 --rotate normal --output DP-1-1 --off --output HDMI-1-2 --off --output DP-1-2 --off --output HDMI-1-3 --off

last line is the output from the Arandr manual setup

Thank you for the help.