Can anyone explain this, please? For some time, my computer has had an intermittent problem: the video output (HDMI) fails to work for a short time, seconds to minutes. The screen just goes completely blank. It usually recovers, but sometimes I have to restart the computer. The problem does not usually occur after I have been using the computer for a while, maybe 20 minutes, just soon after startup.
More recently, the problem occurs on startup. Everything is normal until the login window should appear, but I just get a blank screen. The only option here is to restart, often several times, until I get a login window. I have the impression that having the mains power on for maybe 30 minutes before starting reduces the frequency of this problem. The system is Debian GNU/Linux 11, KDE Plasma, running on 12 x AMD Ryzen 5 5600G with Radeon Graphics, AMD RENOIR graphics processor. I would be grateful for any ideas of what is going wrong here, and how to fix it. An internet search has not helped, I have not found any mention of any similar problem. Peter Alefounder. -- Please post to: Hampshire@mailman.lug.org.uk Manage subscription: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG website: http://www.hantslug.org.uk --------------------------------------------------------------
