Public bug reported:
This is a follow-up issue from
https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-
common/+bug/2075525, and some of the information from the earlier issue
may apply here.
I have configured the host screen with two monitors extending the desktop.
They are both configured at 3840x2160 @ 60Hz, scale 200%, fractional scaling:
no.
I'm using a HDMI 2.1 cable on the one monitor, and a DisplayPort cable
on the other monitor. My graphics card lacks a second display port
connector, so I can not try if the problem would persist with two
DisplayPort cables.
After a period of inactivity, the screens get blanked as configured.
When I move the mouse and the screens unblank, the display configuration is
changed. I have observed different behavior of the changed display
configuration:
- most commonly, the displays change into mirror mode instead of joined mode.
- sometimes, a third, small display appears on one of the sides.
- sometimes, the second monitor stays blank
- sometimes, Gnome crashes
I confirm that I have ubuntu-drivers-common:amd64/noble-updates
1:0.9.7.6ubuntu3.1, so this should have the issue fixed?
Attached is an excerpt from syslog, from around the time then I unlocked
the display coming back from suspend, until the Gnome crash.
System information:
No LSB modules are available.
Description: Ubuntu 24.04.1 LTS
Release: 24.04
** Affects: ubuntu-drivers-common (Ubuntu)
Importance: Undecided
Status: New
** Tags: multimonitor noble nvidia
** Attachment added: "Excerpt from syslog"
https://bugs.launchpad.net/bugs/2081199/+attachment/5819393/+files/log.txt.gz
** Tags added: multimonitor noble
** Tags added: nvidia
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https://bugs.launchpad.net/bugs/2081199
Title:
On high resolution modes, after screen resume from power saving, the
display configuration gets lost, and sometimes Gnome crashes
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