> Oh, wait. You are just fixing the race condition? Yeah; I see the confusion. This issue got caught up by making sure the GDM race condition was fixed at the same as when this feature is enabled.
Perhaps it's better to split the GDM part of it off to it's own bug instead then. > In that case, why can you not revert the kernel config change in the HWE backport to Jammy? That's certainly a possible solution, but what happens when people run mainline kernels for testing another issue and are exposed to this? That's how I discovered it, reported it upstream and got it fixed in GDM. It's a trivial fix. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer Status in gdm: Fix Released Status in gdm3 package in Ubuntu: Fix Released Status in linux package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-470 package in Ubuntu: Fix Released Status in gdm3 source package in Jammy: In Progress Status in linux source package in Jammy: Won't Fix Status in nvidia-graphics-drivers-470 source package in Jammy: Fix Released Status in gdm3 source package in Lunar: Invalid Status in linux source package in Lunar: Won't Fix Status in nvidia-graphics-drivers-470 source package in Lunar: Fix Released Status in gdm3 source package in Mantic: Fix Released Status in linux source package in Mantic: Confirmed Status in nvidia-graphics-drivers-470 source package in Mantic: Fix Released Status in linux package in Fedora: Fix Released Bug description: [ Impact ] The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. This requires Kernel config changes: FB_EFI=n FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer When this stack is enabled, it changes boot timing such that some drivers may take a longer time to boot and GDM may hang in a black screen. This issue has been readily reproduced in Ubuntu and reported to upstream mutter. 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 ] * Race conditions could be exposed to DE environments * Software that expects to find DRM device at /dev/dri/card0 may have a problem. * Some older versions of NVIDIA driver might not work properly. [ Other Info ] * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
