Hello Daniel, or anyone else affected,

Accepted ubuntu-drivers-common into noble-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/ubuntu-drivers-
common/1:0.9.7.6ubuntu3.2 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ubuntu-drivers-common (Ubuntu Noble)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-noble

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-hwe-6.8 in Ubuntu.
https://bugs.launchpad.net/bugs/2083329

Title:
  [regression] [nvidia] Phantom "Unknown Display" shown in Settings
  since kernel 6.11 and 6.8.0-51

Status in linux-hwe-6.8 package in Ubuntu:
  Won't Fix
Status in ubuntu-drivers-common package in Ubuntu:
  Fix Released
Status in ubuntu-drivers-common source package in Jammy:
  In Progress
Status in ubuntu-drivers-common source package in Noble:
  Fix Committed
Status in ubuntu-drivers-common source package in Oracular:
  Fix Released

Bug description:
  [ Impact ]

  Backport the Nvidia/SimpleDRM kernel 6.11 fix for phantom displays.
  This is a continuation of bug 2060268 where kernel 6.11 was found to
  require a different fix from that shipped for 6.8.

  Update: 6.8.0-51 has regressed in the same way as 6.11 did.

  [ Test Plan - Nvidia desktop ]

  1. Set up a DESKTOP where the only GPU enabled is an Nvidia one.
  1. Apply all updates and verify that the running kernel is 6.8.0-51 or later
  2. Open the 'Additional Drivers' app to install a supported Nvidia driver.
  3. Reboot and verify the Nvidia driver is now active (lspci -k should mention 
'nvidia' and not 'nouveau').
  4. Log-in to a GNOME Xorg session
  5. Open Settings and verify the only monitors shown are your real monitors.
  6. Log-in to a Wayland session
  7. Open Settings and verify the only monitors shown are your real monitors.

  [ Regression Test Plan - Nvidia Hybrid graphics ]

  1. Set up a machine with Nvidia hybrid graphics (one discrete Nvidia GPU and 
one Intel/AMD integrated GPU)
  2. Apply all updates and verify that the running kernel is 6.8.0-51 or later
  3. Open the 'Additional Drivers' app to install a supported Nvidia driver.
  4. Reboot and verify the Nvidia driver is now active (lspci -k should mention 
'nvidia' and not 'nouveau').
  5. Verify that `ls /dev/dri/card*` lists exactly two files.

  [ Regression Test Plan - Intel/AMD graphics ]

  1. Set up a machine with integrated graphics only.
  2. Apply all updates and verify that the running kernel is 6.8.0-51 or later
  3. Verify that you are able to log into the Ubuntu Desktop Wayland session.
  4. Run `apt install nvidia-driver-535`.
  5. Reboot.
  6. Verify that you are able to log into the Ubuntu Desktop Wayland session.

  [ Regression Test Plan - Virtual machines ]

  1. Set up a virtual machine without any graphics acceleration (vmware, 
virtio...)
  2. Apply all updates and verify that the running kernel is 6.8.0-51 or later
  3. Verify that you are able to log into the Ubuntu Desktop Wayland session.
  4. Run `sudo apt install nvidia-driver-535`.
  5. Reboot.
  6. Verify that you are able to log into the Ubuntu Desktop Wayland session.
  7. Optionally go back to point 4, and try with nvidia-driver-550.

  [ Regression Test Plan - Nvidia+LUKS ]

  1. Set up a desktop machine (not a laptop) with an Nvidia GPU and encrypted 
disk.
  2. Apply all updates and verify that the running kernel is 6.8.0-51 or later
  3. Open the 'Additional Drivers' app to install a supported Nvidia driver.
  4. Reboot
  5. Verify that you see the password prompt for decrypting the disk.

  [ Where problems could occur ]

  Removing the simpledrm card is only safe when it's not being used. If
  somehow a machine wasn't using the installed Nvidia driver then there
  could be a risk of deleting the only working display.

  One case where this could happen is if the Nvidia driver would allow
  being loaded even without any nvidia hardware present: if that is the
  case, "Regression Test Plan - Virtual machines" would fail.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.8/+bug/2083329/+subscriptions


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