FWWI - long amdgpu load time on some hardware has been root caused to a bug related to how ftrace handles modules. It's especially bad with amdgpu because it has so many trace points.
It's fixed by this commit. https://github.com/torvalds/linux/commit/ef378c3b8233855497a414b9d67bf22592c928a4 ** Changed in: linux (Ubuntu) Status: Opinion => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/2115451 Title: On dual-amdgpu machines the login screen starts with simpledrm and switches to amdgpu one second later, causing freezes Status in gdm3 package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Opinion Status in systemd package in Ubuntu: Confirmed Bug description: After upgrading to Ubuntu 25.04 my laptop fails to properly start the gnome login shell. During boot I see the graphical splash screen as expected, but once the login screen should show, one of the below things happen: - Nothing, I keep seeing the boot splash screen. - The login screen is rendered, but only a single frame. Moving the mouse or pressing keys has no effect. - The login screen is rendered and the mouse cursor moves, but none of the widgets respond to clicks or pressing keys. To recover, I have to Ctrl+Alt+F2 and login on the terminal interface. Then I can do a `sudo systemctl restart user-120.slice` after which I can go back to the GUI login screen and it works. ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: gnome-shell 48.0-1ubuntu1 ProcVersionSignature: Ubuntu 6.14.0-22.22-generic 6.14.5 Uname: Linux 6.14.0-22-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Thu Jun 26 22:21:40 2025 DisplayManager: gdm3 InstallationDate: Installed on 2024-12-25 (183 days ago) InstallationMedia: Ubuntu 24.10 "Oracular Oriole" - Release amd64 (20241009.4) RelatedPackageVersions: mutter-common 48.1-1ubuntu3 SourcePackage: gnome-shell UpgradeStatus: Upgraded to plucky on 2025-06-15 (11 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2115451/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
