Hi Daniel,

I reinstalled today my ADL-P PC with Ubuntu Desktop 22.04.02.
And this is not reproduced with -generic kernel.

I have this: 5.19.0-46-generic #47~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Jun 
21 15:35:31 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
And no error with this.

LIBMUTTER VERSION:
dpkg -l | grep libmutter
ii  libmutter-10-0:amd64                       42.9-0ubuntu1                    
       amd64        window manager library from the Mutter window manage

GNOME SHELL VERSION:
dpkg -l | grep gnome-shell
ii  gnome-shell                                42.9-0ubuntu2                    
       amd64        graphical shell for the GNOME desktop

KERNEL VERSION:
dpkg -l | grep linux-image
ii  linux-image-5.19.0-32-generic              5.19.0-32.33~22.04.1             
       amd64        Signed kernel image generic
ii  linux-image-5.19.0-46-generic              5.19.0-46.47~22.04.1             
       amd64        Signed kernel image generic
ii  linux-image-generic-hwe-22.04              5.19.0.46.47~22.04.21            
       amd64        Generic Linux kernel image

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-intel-iotg in Ubuntu.
https://bugs.launchpad.net/bugs/2026887

Title:
  gnome-shell 42.9 Wayland sessions fail to start on Intel Alder Lake
  running 5.15 kernels (Failed to lock front buffer on /dev/dri/cardN:
  drmModeAddFB2WithModifiers failed: Invalid argument)

Status in linux package in Ubuntu:
  Fix Released
Status in linux-hwe-5.19 package in Ubuntu:
  Fix Released
Status in linux-intel-iotg package in Ubuntu:
  Confirmed
Status in mutter package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Won't Fix
Status in mutter source package in Jammy:
  Fix Committed
Status in mutter source package in Kinetic:
  Invalid
Status in mutter source package in Lunar:
  Invalid
Status in mutter source package in Mantic:
  Invalid

Bug description:
  [ Impact ]

  gnome-shell/mutter 42.9 fails to start (black screen) on Intel Alder
  Lake systems running older kernels such as 5.15.

  [ Test Plan ]

  Try to log into gnome-shell. Verify there is a picture on the screen.

  [ Where problems could occur ]

  The offending code change relates to Intel-specific chip IDs so the
  change is limited to Intel systems. Although affected Intel systems
  worked perfectly before the change so we don't expect any problems in
  reverting the change. In theory the worst case is limited to more
  problems like that described in Impact above.

  [ Workarounds ]

  Add MUTTER_DEBUG_USE_KMS_MODIFIERS=0 to /etc/environment

  or upgrade to a newer kernel:
  sudo apt install linux-generic-hwe-22.04

  [ Other Info ]

  The log messages relating to this bug are:
  iul 11 19:00:11 MY-PC gnome-shell[1040]: Failed to lock front buffer on 
/dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument
  iul 11 19:00:11 MY-PC gnome-shell[1040]: Failed to lock front buffer on 
/dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument
  iul 11 19:00:11 MY-PC gnome-shell[1040]: Failed to lock front buffer on 
/dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument
  iul 11 19:00:11 MY-PC gnome-shell[1040]: Failed to lock front buffer on 
/dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument
  ...

  For kinetic: The bug never existed in mutter 43.0 (it was introduced
  in 43.2) and was already fixed in the kernel anyway.

  For lunar and later: The bug was already fixed in the kernel. You
  would only ever encounter it in theory if you downgrade the kernel.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2026887/+subscriptions


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