debcrafters-packages team mailing list archive

[Mario Limonciello <2115451@xxxxxxxxxxxxxxxxxx>]

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

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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)

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