Public bug reported:
Linux opal 6.14.0-27-generic #27~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue
Jul 22 17:38:49 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
No LSB modules are available.
Description: Ubuntu 24.04.2 LTS
Release: 24.04
(1) I created / enabled a swap partition
swapon -s
Filename Type Size Used
Priority
/dev/nvme0n1p6 partition 20971516 0
-2
(2) I have a single monitor, connected to a usb 4 port, in DP Alt Mode
for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n
"${con#*/card?-}: "; cat $p; done
DP-1: disconnected
DP-2: connected
...
(3) I hibernate the system
sudo systemctl hibernate
The system hibernates and powers down
(4) I power the system on
The DP Alt mode monitor loses signal and enters sleep mode ( same when
subsequently unplugging and re-plugging it)
(5) I plug in an HDMI monitor, I can login and the system has resumed exactly
from when it was hibernated, except for the change in monitor
The usb DP Alt mode monitor *cannot* be connected, despite attempts to
re-plug it (remove usb plug and re-insert it).
for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n
"${con#*/card?-}: "; cat $p; done
DP-1: disconnected
DP-2: disconnected
DP-3: disconnected
DP-4: disconnected
DP-5: disconnected
DP-6: disconnected
DP-7: disconnected
HDMI-A-1: connected
This is a bit perplexing
If I power down without hibernating and power back on, the system will
use the usb DP Alt mode monitor fine
Thanks
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2119370
Title:
Hibernate resumes on non existent monitor
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