My laptop (Dell Latitude 5590 without extra video card) doesn't wake up after I lock my screen. After locking it goes black and although my power-button is lighted up, the screen stays black if I press enter, escape, space or mouse-click.
I have tried X11 and Wayland, older and newer kernel-versions, I've update Gnome to version 41, I've update my BIOS and tried things like "GRUB_CMD_LINUX="nouveau.modeset=0" in grub config and it didn't work and "RUB_CMDLINE_LINUX="nouveau.blacklist=1" in grub config and it didn't work.
I also tried using lightdm instead of gdm3, but without any succes.
What can be the issue and how to solve it?
Edit: Using sudo journalctl -b 0 I've found the line i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun. I've looked it up and it seems to have something to do with my graphics driver. I tried changing my resolution to something that's not 16:9, and the same thing happens: screen turns to black and I can do nothing than hold the power button to shutdown.
I've tried a few things I've found on google, but without success, like adding nouveau.runpm=0 or i915.enable_rc6=0 to the GRUB_CMD_LINUX in the grub config.
Is there for example an alternative to the i915 drivers for my Intel OnBoard GPU? Or is this the only option?
Edit2: I have added nomodeset to the GRUB_CMDLINE_LINUX_DEFAULT in the grub config. This fixes the issue that after locking, the screen won´t turn on again. I don´t know why this fixes it, but I'm glad I can finally lock my laptop without having to force a shutdown. Too bad now the Nightlight doesn´t work anymore. :(
The only problem I have now left is that if I do a suspend and then try to start it again, the screen stays black. I already changes my swap file to 12GB, I read that the default 2GB is not enough. Unfortunately, this doesn´t doesn't fix it.
