** Description changed: [ Impact ] When the kernel has been compiled with FB_EFI=n, FB_VESA=n, SIMPLEDRM=y a series of events can occur that cause simpledrm to race with GDM. When GDM loses the race then a user is left with a black screen. This series of events doesn't currently happen in Jammy kernels, but can happen from a mainline kernel or HWE kernel that enables it. To protect users from this circumstance it is better to fix the race condition. - This issue has been readily reproduced in Ubuntu and reported to upstream mutter. + This issue has been readily reproduced in Ubuntu and reported to upstream mutter. It's also already fixed in GNOME 45, included in Mantic and later. https://gitlab.gnome.org/GNOME/mutter/-/issues/2909 [ Test Plan ] * Ensure that a kernel with required kernel changes can boot to GDM using DRM driver (amdgpu, i915, or nouveau) [ Where Problems could occur ] * GDM can take longer to start up while settling [ Other Info ] * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 * the changes needed to enable this in the kernel are tracked in bug 1965303
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/2039757 Title: Fix race condition in gdm with simpledrm and real drm drivers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2039757/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
