** This bug is no longer a duplicate of bug 2069564 [SRU] gnome-shell crashed with SIGTRAP in meta_wayland_compositor_new() from meta_context_start() from main() ["Failed to start X Wayland: Directory \"/tmp/.X11-unix\" is not writable"]
** Description changed: + [ Impact ] + + The fix for bug 2120413 was supposed to retry the preferred display + server option (generally Wayland) before falling back to another option + (generally Xorg). + + After the update however, gdm is seen retrying Wayland forever instead and never falling back to Xorg. + This only happens when auto-login is enabled. With auto-login disabled instead, GDM correctly falls back to Xorg after 5 retries of Wayland. + + The bug is Invalid for questing and newer, because there is no Xorg + session to fall back to, as there's only Wayland. + + Evidence: + + * no auto-login: + https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2129777/+attachment/5920253/+files/journal- + last-gdm3-version-no-autologin.txt + + * auto-login: + https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2129777/+attachment/5920254/+files/journal- + last-gdm3-version-autologin.txt + + [ Test Plan ] + + TBD + + [ Where problems could occur ] + + TBD + + [ Original bug report ] + Hello, This issue is probably linked to bug #2128840, but in my case, MUTTER_DEBUG_FORCE_EGL_STREAM env var is not set. In short, upgrading to gdm3 46.2-1ubuntu1~24.04.3 and rebooting, caused the desktop could not be reached: black screen only. Removing the Automatic Login entries from /etc/gdm3/custom.conf and rebooting fixed the issue. Downgrading to the previous version (46.2-1ubuntu1~24.04.1) also fixed the issue. System info will be shared in the next comment(s). Note: the issue is visible on a laptop I don't own, and I don't easily have access. I tried to provide as much data as I could, but "quick tests" might be difficult. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: gdm3 46.2-1ubuntu1~24.04.3 ProcVersionSignature: Ubuntu 6.8.0-86.87-generic 6.8.12 Uname: Linux 6.8.0-86-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.8 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Oct 24 19:29:50 2025 InstallationDate: Installed on 2021-11-23 (1431 days ago) InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012) SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.gdm3.custom.conf: 2025-10-24T19:28:32.230086 ** Also affects: gdm3 (Ubuntu Questing) Importance: Undecided Status: New ** Also affects: gdm3 (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: gdm3 (Ubuntu Plucky) Importance: Undecided Status: New ** Changed in: gdm3 (Ubuntu Questing) Status: New => Invalid ** Changed in: gdm3 (Ubuntu) Status: New => Invalid ** Changed in: gdm3 (Ubuntu Noble) Status: New => Triaged ** Changed in: gdm3 (Ubuntu Plucky) Status: New => Triaged ** Tags added: udeng-8453 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2129777 Title: Automatic Login with latest gdm3 is broken if Wayland doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2129777/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
