Thanks. I can see the external display is connected by HDMI to the
NVIDIA GPU. And you seem to be using Xorg exclusively so this is a bug
between Xorg and the NVIDIA driver.
I think it's likely the issue correlates with these error messages:
[drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID
0x00000100] Failed to grab modeset ownership
Because that means the NVIDIA driver has lost control of its displays
(the external monitor).
As a possible workaround you might like to try adding a kernel
parameter:
nvidia_drm.modeset=0
which should at least disable the code path causing the above error
message.
** Changed in: nvidia-graphics-drivers-530 (Ubuntu)
Status: Incomplete => New
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Tags added: hybrid multigpu multimonitor nvidia
** Summary changed:
- External display sometimes frozen, after logout/login has only black screen.
+ [nvidia] External display sometimes frozen, after logout/login has only black
screen.
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/2025320
Title:
[nvidia] External display sometimes frozen, after logout/login has
only black screen.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-530/+bug/2025320/+subscriptions
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