canonical / lightdm

Display Manager
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simpledrm / lightdm race condition leads to black screen #358

Open LightningW9 opened 5 months ago

LightningW9 commented 5 months ago

Since the upgrade from Xubuntu 23.10 to 24.04 there is a race condition with lightdm/drm gpu driver on boot leading to blank screen. Temporary workaround is to disable splash in grub.

Logs: Log of failed boot to black screen: https://pastebin.com/6SGEvAtf Log of passed boot (splash disabled): https://pastebin.com/q5wLFW0Q

Launchpad bug: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/2063983

Same issue with SDDM: https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/2063143 https://github.com/sddm/sddm/issues/1917

Similar GDM issue that was resolved: https://gitlab.gnome.org/GNOME/mutter/-/issues/2909