I am running F41 with kernel 6.12.10 on a Slimbook Executive with an i7-13000H and experiencing black screen on my laptop after wake up. The power settings are set to blank screen after 5 minutes. After the screen goes off (or I close the lid and reopen it) the laptop is fully functional but the screen stays off. At that point my only option is to force shut the laptop and reboot. I thought it could be related to a kernel issue but now I start doubting it because it does not happen before logging in. If I turn on my computer and let it go to sleep before logging in, the screen comes back on. Any suggestions on what it could be?
So far I am living with the Caffeine extension always on which prevents the screen to go blank. Not a vital issue but really annoying.
Hey there! I’ve struggled with this myself - my laptop was having problems after wake where the screen wouldn’t start (and then the trackpad would stop working!).
Have you seen if in any logs there is anything after you wake the laptop? Maybe check if there is a message or log event that says it couldn’t set the display to wake? In your terminal, you can run:
journalctl -b
Also - what desktop environment are you using (KDE / Gnome, something else?). Maybe something is set in there that needs to be checked?
Hi @rwright , thanks for taking the time for helping me. I would not know how to get a log after wake up since the screen is black and I have no other options than forcing a shut down. You message helped solving the issue anyway. I went back and checked all my Gnome settings related to power and display. The only thing I had changed was the screen resolution and the refresh rate. Before the introduction of fractional scaling I had set the resolution to 1920 (my display is 2880) and refresh rate to 59,95Hz (my display is 90Hz but I though I’d save on battery power - does it though?). The culprit was refresh rate! Switching to 1920 with refresh rates lower than 90Hz caused the screen issue. Instead, running at 90Hz at whatever resolution, the screen wakes up correctly. Now I am set to native resolution, 150% scaling and native refresh rate and everything seems to work!
I am pretty sure I had set the refresh rate way before
having the wake issue and everything run smoothly until recently. Do you think this might be a bug in Gnome that has emerged only recently? Should I file a bug report?
Thanks again!
If you have some logs or an idea of something that indicates there was a problem, maybe you could raise it as a bug against the right package - we’d have to know what was broken first to point to a right place for a bug to be raised.
