Control: tag -1 + moreinfo Hello Peter, On Tue, May 27, 2025 at 05:17:32PM +0200, Peter Müller wrote: > For a few weeks now (perhaps after every second or third sleep), > awakening from sleep fails too often. More precisely, when I hit the > Shift key or click a mouse button when the PC is asleep, it starts > waking up (the LED indicating power switches from flashing between on > and off every second to being continuously on), but the screen remains > black. The keyboard remains unresponsive to hitting the LED keys > (NumLock, CapsLock, ScrollLock). Hitting the key sequence Alt+(SysRq, > R, E, I, S, U, B) has no visible effect. Pushing the reboot button > has no visible effect. (On another freeze, pinging the PC has no > effect; I don't try it out each time.) Observationally, the PC has > frozen. Only pressing the power button for 6–10 seconds has a visible > effect: the computer goes off. After the last such freeze, we find > this in the journal: > [...] That might be a BIOS issue. I guess there is no BIOS update available for your machine? If the problems still occur on the newest BIOS, the debugging you need to do is described on https://docs.kernel.org/power/basic-pm-debugging.html Depending on your findings we might get an idea how to fix your issue. So please report back your test results. Best regards Uwe
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