Solved already. Problem was related to Nvidia driver Similar bug Solution at the link https://askubuntu.com/questions/1128350/ubuntu-18-10-settings-bug
** Description changed: This problem starts recently while I was watching some video files on videos. After that whenever I click on any video file it just forces me to log off the system and crash the work environment. Then after uninstalling the Videos software it was working fine. But now recently I installed qgis software. Again this log off problem starts. Whenever I try to add some plugins to qgis my system crashes and forces me to log off from the current session. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xserver-xorg (not installed) ProcVersionSignature: Ubuntu 5.3.0-53.47~18.04.1-generic 5.3.18 Uname: Linux 5.3.0-53-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Wed Jun 10 12:53:21 2020 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: - NVIDIA Corporation GP107GL [Quadro P400] [10de:1cb3] (rev a1) (prog-if 00 [VGA controller]) - Subsystem: Dell GP107GL [Quadro P400] [1028:11be] + NVIDIA Corporation GP107GL [Quadro P400] [10de:1cb3] (rev a1) (prog-if 00 [VGA controller]) + Subsystem: Dell GP107GL [Quadro P400] [1028:11be] InstallationDate: Installed on 2019-08-31 (283 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) Lsusb: - Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub - Bus 001 Device 003: ID 413c:301a Dell Computer Corp. - Bus 001 Device 002: ID 413c:2107 Dell Computer Corp. - Bus 001 Device 004: ID 0781:5567 SanDisk Corp. Cruzer Blade - Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 001 Device 003: ID 413c:301a Dell Computer Corp. + Bus 001 Device 002: ID 413c:2107 Dell Computer Corp. + Bus 001 Device 004: ID 0781:5567 SanDisk Corp. Cruzer Blade + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Precision 3630 Tower ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-53-generic root=UUID=46512e15-013e-4c05-8e5a-6b0ccc6f6d7a ro quiet splash vt.handoff=1 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/05/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.5.0 dmi.board.name: 0NNNCT dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.5.0:bd02/05/2020:svnDellInc.:pnPrecision3630Tower:pvr:rvnDellInc.:rn0NNNCT:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: Precision dmi.product.name: Precision 3630 Tower dmi.product.sku: 0871 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1~18.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.3 version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.8-0ubuntu0~18.04.3 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1882897 Title: Suddent log off/abort in middle of session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1882897/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
