It's failing to display on the integrated Intel GPU because it couldn't negotiate a pixel format that's also compatible with the discrete GPU (nouveau):
May 22 16:25:39 homer gnome-shell[4809]: Failed to lock front buffer on /dev/dri/card1: drmModeAddFB2 failed (Invalid argument) and drmModeAddFB cannot be used as a fallback because format=0x30335241 (AR30). May 22 16:25:39 homer gnome-shell[4809]: (../clutter/clutter/clutter-frame-clock.c:495):clutter_frame_clock_notify_ready: code should not be reached That's upstream bug https://gitlab.gnome.org/GNOME/mutter/-/issues/3389, fixed in mutter 46.1. ** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #3389 https://gitlab.gnome.org/GNOME/mutter/-/issues/3389 ** Package changed: gdm3 (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: Incomplete => Fix Released ** Also affects: mutter via https://gitlab.gnome.org/GNOME/mutter/-/issues/3389 Importance: Unknown Status: Unknown ** Also affects: mutter (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: mutter (Ubuntu Oracular) Importance: Undecided Status: Fix Released ** Summary changed: - gdm login screen in noble does not display on wayland + Primary GPU displays nothing if the secondary GPU is using nouveau in a Wayland session ** Changed in: mutter (Ubuntu Oracular) Importance: Undecided => High ** Changed in: mutter (Ubuntu Noble) Importance: Undecided => High ** Changed in: mutter (Ubuntu Noble) Assignee: (unassigned) => Daniel van Vugt (vanvugt) ** Changed in: mutter (Ubuntu Noble) Status: New => Triaged ** Changed in: mutter (Ubuntu Oracular) Milestone: None => ubuntu-24.10 ** Tags added: fixed-in-mutter-46.1 fixed-upstream ** Tags added: hybrid multigpu nouveau wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2066931 Title: Primary GPU displays nothing if the secondary GPU is using nouveau in a Wayland session To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/2066931/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
