Thanks for the bug report. It appears that Xorg is using a fallback (low resolution) graphics driver because your kernel is not providing the correct device node:
[ 70.422] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19 [ 70.422] (EE) open /dev/dri/card0: No such file or directory Also your kernel appears to be quite out of date so please try updating it: sudo apt update sudo apt full-upgrade and reboot. ** Summary changed: - resolution problem + [Nvidia GeForce GT 710] Low resolution, missing /dev/dri/card0 ** Package changed: xorg (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1944071 Title: [Nvidia GeForce GT 710] Low resolution, missing /dev/dri/card0 Status in linux package in Ubuntu: Incomplete Bug description: my system has low resolution , strange size in icons , cannot upgrade and update Ubuntu 18.04 LTS ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-96.97-generic 4.15.18 Uname: Linux 4.15.0-96-generic i686 .tmp.unity_support_test.1: ApportVersion: 2.20.9-0ubuntu7.14 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity:Unity7:ubuntu Date: Sun Sep 19 13:09:38 2021 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu DkmsStatus: bbswitch, 0.8, 4.15.0-33-generic, i686: installed bbswitch, 0.8, 4.15.0-43-generic, i686: installed bbswitch, 0.8, 4.15.0-96-generic, i686: installed bbswitch, 0.8, 4.4.0-134-generic, i686: installed nvidia, 390.116: added DpkgLog: ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GK208B [GeForce GT 710] [10de:128b] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd GK208B [GeForce GT 710] [1458:36f8] InstallationDate: Installed on 2014-05-05 (2693 days ago) InstallationMedia: MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-96-generic root=UUID=a29545ea-f853-49eb-ab0d-862d65642632 ro quiet splash Renderer: Software SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) XorgLogOld: dmi.bios.date: 02/25/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: FB dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H61M-S2PV REV 2.2 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFB:bd02/25/2013:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-S2PVREV2.2:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 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 2:1.19.6-1ubuntu4.4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 xserver.bootTime: Sun Sep 19 12:23:48 2021 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.19.6-1ubuntu4.4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944071/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp