** Summary changed: - Phantom monitor (simpledrm) shown in Settings after installing the Nvidia driver + Phantom "Unknown Display" shown in Settings after installing the Nvidia driver
** Description changed: + [ 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. - --- + It looks like the phantom monitor is /dev/dri/card0 which is still + controlled by simpledrm, while Nvidia uses /dev/dri/card1. + + [ Workaround ] + + 1. sudo rm /dev/dri/card0 + 2. Log in again. + + [ Test Plan ] + + Open Settings and verify the only monitors shown are your real monitors. + + [ 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. + + [ 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 + 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> + 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 + 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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2060268 Title: Phantom "Unknown Display" shown in Settings after installing the Nvidia driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060268/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
