** Description changed: + [ Impact ] + + Wayland sessions log in to a black screen, if a secondary GPU exists + that's using the nouveau driver and has a secondary monitor plugged into + it. + + [ Test Plan ] + + 0. Find a machine with hybrid graphics: Intel integrated, Nvidia discrete. + 1. Plug a second monitor into one of the ports wired to the discrete GPU. + 2. Stick to the default nouveau graphics driver for Nvidia. No proprietary drivers. + 3. Reboot. + + Verify the login screen appears and you can successfully log into a + Wayland session. + + [ Where problems could occur ] + + Although the bug affects dual GPU multi-monitor systems, what is failing + here is the primary monitor on the primary GPU. So the potential risk is + that the primary display starts failing on more types of machines in + Wayland sessions. + + [ Original description ] + after upgrade from mantic to noble, my laptop booted to the firmware splash screen with Ubuntu logo, plus a mouse cursor. The gdm login screen did not appear. Switching to disable wayland (as in the attached modified config file) fixed this so that the login screen appears. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: gdm3 46.0-2ubuntu1 ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1 Uname: Linux 6.8.0-31-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.28.1-0ubuntu3 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Thu May 23 08:06:45 2024 InstallationDate: Installed on 2019-12-23 (1613 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) SourcePackage: gdm3 UpgradeStatus: Upgraded to noble on 2024-05-22 (1 days ago) mtime.conffile..etc.gdm3.custom.conf: 2024-05-22T16:33:18.326823
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
