OK, thanks. Can you please try some older/newer kernels and tell us if any of those avoid the problem?
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=M;O=D ** Summary changed: - screen glitches + [Dell Precision 5540] Screen glitches ** Package changed: ubuntu => linux (Ubuntu) ** Summary changed: - [Dell Precision 5540] Screen glitches + [Dell Precision 5540] Screen glitches temporarily -- 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/1920670 Title: [Dell Precision 5540] Screen glitches temporarily Status in linux package in Ubuntu: Incomplete Bug description: Time by time screen glitches for some seconds. This problem happens independent of PC load (with both Intel and NVIDIA graphic cards). ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.8.0-45.51~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-45-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia .proc.driver.nvidia.capabilities.gpu0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/capabilities/gpu0' .proc.driver.nvidia.capabilities.mig: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/capabilities/mig' .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.suspend: suspend hibernate resume .proc.driver.nvidia.suspend_depth: default modeset uvm .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 460.39 Thu Jan 21 21:54:06 UTC 2021 GCC version: ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sun Mar 21 16:41:39 2021 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu DkmsStatus: nvidia, 460.39, 5.8.0-45-generic, x86_64: installed (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Dell UHD Graphics 630 (Mobile) [1028:0906] Subsystem: NVIDIA Corporation TU117GLM [Quadro T2000 Mobile / Max-Q] [10de:0000] InstallationDate: Installed on 2021-03-21 (0 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) MachineType: Dell Inc. Precision 5540 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-45-generic root=UUID=d9d861fa-ee39-4c30-a652-d4c285927a01 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/14/2020 dmi.bios.release: 1.9 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.9.1 dmi.board.name: 0WWHJ2 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.9.1:bd12/14/2020:br1.9:svnDellInc.:pnPrecision5540:pvr:rvnDellInc.:rn0WWHJ2:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Precision dmi.product.name: Precision 5540 dmi.product.sku: 0906 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1920670/+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
