Thanks for the bug report. Firstly, you are using the (low quality) open source 'nouveau' graphics driver. It is known to cause such problems so please start by using the 'Additional Drivers' app to install an official Nvidia driver.
After installing the driver and rebooting, if the problem still occurs then please follow the steps in https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete ** Tags added: multimonitor nouveau -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1975445 Title: Crash back to login screen when connecting external monitor in 22.04 LTS Status in Ubuntu: Incomplete Bug description: I upgraded my Ubuntu 20.04 LTS to 22.04 LTS using do-release-upgrade -d command on 2022/05/20 And then my external monitor, who worked well before on 20.04 LTS, was never able to connect. Everytime I try to connect it, set Joint Displays and press apply on the setting panel, the system crashes and goes back to login screen. When I switch to Windows on the same computer, external monitor is able to connect. Bug only appears on the new 22.04 LTS. System info: Device: Dell Inc. Precision 7750 Processor: Intel W-10855M Graphics: Intel UHD Graphics P630 / NVIDIA Quadro RTX 3000 Built-in Display: 1920 X 1080, 60.00 HZ External monitor where the bug appears: PHL 230B8Q (1920 X 1200, 59.950 HZ) ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: xorg 1:7.7+23ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-30.31-generic 5.15.30 Uname: Linux 5.15.0-30-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: unknown CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon May 23 11:42:00 2022 DistUpgraded: 2022-05-20 18:00:09,901 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py' DistroCodename: jammy DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Device [8086:9bf6] (rev 05) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:09c4] NVIDIA Corporation TU106GLM [Quadro RTX 3000 Mobile / Max-Q] [10de:1f36] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell TU106GLM [Quadro RTX 3000 Mobile / Max-Q] [1028:09c4] InstallationDate: Installed on 2021-06-18 (338 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) MachineType: Dell Inc. Precision 7750 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-30-generic root=UUID=4f247525-7971-47a5-b2b2-8f3a0282b3c7 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: Upgraded to jammy on 2022-05-20 (2 days ago) dmi.bios.date: 03/30/2022 dmi.bios.release: 1.14 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.14.2 dmi.board.name: 0KT0MH dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.14.2:bd03/30/2022:br1.14:svnDellInc.:pnPrecision7750:pvr:rvnDellInc.:rn0KT0MH:rvrA01:cvnDellInc.:ct10:cvr:sku09C4: dmi.product.family: Precision dmi.product.name: Precision 7750 dmi.product.sku: 09C4 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.110-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 22.0.1-1ubuntu2 version.libgl1-mesa-glx: libgl1-mesa-glx 22.0.1-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:21.1.3-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build3 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1975445/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
