** 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 Desktop Packages, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/2129777 Title: Automatic Login with latest gdm3 is broken if Wayland doesn't work Status in gdm3 package in Ubuntu: Invalid Status in gdm3 source package in Noble: Triaged Status in gdm3 source package in Plucky: Triaged Status in gdm3 source package in Questing: Invalid Bug description: [ 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. 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 [ Other info ] The bug is Invalid for questing and newer, because there is no Xorg session to fall back to, as there's only Wayland. [ 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2129777/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
