Vincent Lefevre <vinc...@vinc17.net> writes: > So it could be a hardware problem, with this monitor or something > else, possibly specific to HDMI. > > I suggest that you try with another machine, another cable, etc. if > possible. Or the same machine with another monitor.
I have multiple cables and an extra laptop. Let me try as many combinations as possible. And report here. > > You might get messages in the /var/log/Xorg.0.log file if you're using X. > Where are the Wayland logs? I have a freshly installed Debian 11 and default is Wayland. > And I had noted that plugging out then in again the HDMI cable on the > monitor side was generally making the problem disappear for some time. The problem timing is very random so I am not sure if I can diagnose anything by changing ports.
