Bug#991788: Same bug here

[Martin Quinson <martin.quinson@ens-rennes.fr>]

Hello,

I'm having the same bug. Me too I have to switch to the console with Ctrl-Alt-F1 to revive the graphical console. I found that the following is sufficient to revive the display from the blank screen:

chvt 7; DISPLAY=:0 xrandr --auto

The second part of the workaround was found in the logs of this bug, but the first part is easier than the previously proposed hack: delaying the xrandr and manually switching to the vt 7.

My settings:

$ dpkg -l xfce4 upower light-locker nvidia-kernel-dkms|grep ii; uname -a; lspci |grep -i nvidia
ii  light-locker       1.8.0-3      amd64        simple screen locker for lightDM display manager
ii  nvidia-kernel-dkms 470.141.03-1 amd64        NVIDIA binary kernel module DKMS source
ii  upower             0.99.20-1    amd64        abstraction for power management
ii  xfce4              4.16         all          Meta-package for the Xfce Lightweight Desktop Environment
Linux cafuron 5.18.0-4-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1 (2022-08-10) x86_64 GNU/Linux
01:00.0 3D controller: NVIDIA Corporation TU117GLM [Quadro T1000 Mobile] (rev a1)

Thanks,