Hello Daniel, or anyone else affected,

Accepted ubuntu-drivers-common into jammy-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/ubuntu-drivers-
common/1:0.9.6.2~0.22.04.7 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-
jammy to verification-done-jammy. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-jammy. 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 Jammy)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-jammy

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to ubuntu-drivers-common in Ubuntu.
https://bugs.launchpad.net/bugs/2060268

Title:
  Phantom "Unknown Display" shown in Settings after installing the
  Nvidia driver

Status in OEM Priority Project:
  New
Status in linux package in Ubuntu:
  Invalid
Status in nvidia-graphics-drivers-470 package in Ubuntu:
  Won't Fix
Status in nvidia-graphics-drivers-535 package in Ubuntu:
  Won't Fix
Status in nvidia-graphics-drivers-545 package in Ubuntu:
  Won't Fix
Status in nvidia-graphics-drivers-550 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:
  Fix Committed
Status in ubuntu-drivers-common source package in Noble:
  Fix Committed

Bug description:
  [ Impact ]

  After installing Nvidia driver 545 on a single (27") monitor system,
  Settings shows a phantom 46" monitor of the same resolution.

  It looks like the phantom monitor is /dev/dri/card0 which is still
  controlled by simpledrm, while Nvidia uses /dev/dri/card1.

  This also seems to be triggering bug 2062426 and bug 2066126.

  [ Temporary Workaround ]

  1. sudo rm /dev/dri/card0
  2. Log in again.

  [ Permanent Workaround ]

  Add kernel parameter: initcall_blacklist=simpledrm_platform_driver_init
  Beware that this has side-effects: see comment #37

  [ Test Plan - Nvidia case ]

  1. Set up a single monitor desktop where the only GPU enabled is an Nvidia 
one.
  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. Open Settings and verify the only monitors shown are your real monitors.

  [ Test Plan - Non-Nvidia case ]

  1. Set up a machine with one or more GPUs, all non-nvidia.
     (a KVM virtual machine with VirtIO is an easy candidate for this)
  2. Run `apt install nvidia-driver-535`.
  3. Reboot.
  4. Verify that you are able to log into the Ubuntu Desktop Wayland session.

  [ Test Plan - No-GPU case ]

  1. Set up a machine without any GPU.
     (a virtual machine without any graphics acceleration (vmware, virtio...) 
is an easy candidate for this.
  2. Run `sudo apt install nvidia-driver-535`.
  3. Reboot.
  4. Verify that you are able to log into the Ubuntu Desktop Wayland session.
  5. Go back to point 2, and try with another driver version:
     [nvidia-driver-470, nvidia-driver-535, nvidia-driver-535-open, 
nvidia-driver-550, nvidia-driver-550-open]

  [ 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, "Test Plan - No-GPU case" would fail.

  [ Other Info ]

  ProblemType: Bug
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/seq:        dan        4631 F.... pipewire
   /dev/snd/controlC1:  dan        4636 F.... wireplumber
  CRDA: N/A
  CasperMD5CheckResult: pass
  DistroRelease: Ubuntu 24.04
  InstallationDate: Installed on 2024-01-04 (92 days ago)
  InstallationMedia: Ubuntu 24.04 "Noble Numbat" - Daily amd64 (20231127)
  MachineType: Intel(R) Client Systems NUC12DCMi7
  NonfreeKernelModules: nvidia_modeset nvidia
  Package: linux (not installed)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  ProcFB: 0 simpledrmdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-11-generic 
root=UUID=8434774e-88f2-4e3f-adb8-2eb07dff3cf9 ro quiet loglevel=3 splash 
vt.handoff=7
  ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4
  RelatedPackageVersions:
   linux-restricted-modules-6.8.0-11-generic N/A
   linux-backports-modules-6.8.0-11-generic  N/A
   linux-firmware                            20240318.git3b128b60-0ubuntu1
  Tags: noble
  Uname: Linux 6.8.0-11-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sudo users
  _MarkForUpload: True
  dmi.bios.date: 12/20/2021
  dmi.bios.release: 5.24
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: EDADL579.0046.2021.1220.2351
  dmi.board.name: NUC12EDBi7
  dmi.board.vendor: Intel Corporation
  dmi.board.version: M27908-302
  dmi.chassis.type: 35
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 2.0
  dmi.ec.firmware.release: 3.7
  dmi.modalias: 
dmi:bvnIntelCorp.:bvrEDADL579.0046.2021.1220.2351:bd12/20/2021:br5.24:efr3.7:svnIntel(R)ClientSystems:pnNUC12DCMi7:pvrM30143-302:rvnIntelCorporation:rnNUC12EDBi7:rvrM27908-302:cvnIntelCorporation:ct35:cvr2.0:skuRNUC12DCMi70000:
  dmi.product.family: DC
  dmi.product.name: NUC12DCMi7
  dmi.product.sku: RNUC12DCMi70000
  dmi.product.version: M30143-302
  dmi.sys.vendor: Intel(R) Client Systems

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