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[Bug 2115451] Re: On dual-amdgpu machines the login screen starts with simpledrm and switches to amdgpu one second later, causing freezes

 

Fair point. Since we now keep the DRM drivers exclusively in the root
filesystem, the kernel won't have access to even start loading them
until the disk is unlocked.


** Changed in: linux (Ubuntu)
       Status: Confirmed => Opinion

** Changed in: linux (Ubuntu)
   Importance: Medium => Undecided

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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:
  Opinion
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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