This bug was fixed in the package ubuntu-drivers-common -
1:0.9.7.6ubuntu3.2
---------------
ubuntu-drivers-common (1:0.9.7.6ubuntu3.2) noble; urgency=medium
[Alessandro Astone]
* Improve SimpleDRM+NVIDIA fix across kernel versions (LP: #2083329)
[ Kuba Pawlak ]
* fix searching for lrm drivers matching linux-image-virtual (LP: #2085962)
* fix install --gpgpu handling (LP: #2083709)
* Add --include-dkms option to listing drivers (LP: #2090924)
* Sort the output list of matching nvidia drivers (LP: #2081970)
* NVIDIA 560 release should suggest -open variant first (LP: #2081967)
[ Dann Frazier]
* Add more useful help text for --gpgpu See LP: #2081881
-- Kuba Pawlak <kuba.paw...@canonical.com> Wed, 11 Dec 2024 13:40:29
+0100
** Changed in: ubuntu-drivers-common (Ubuntu Noble)
Status: Fix Committed => Fix Released
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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 Released
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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