I have disabled PSR by adding the kernel parameter to /etc/default/grub and running sudo update-grub before rebooting. It has been a few hours, and the screen flickering has not recurred as of yet. I'll keep you updated if that changes.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-5.11 in Ubuntu. https://bugs.launchpad.net/bugs/1939211 Title: [Dell XPS 13 9380] Screen flickering after upgrading from 5.8 kernel to 5.11 kernel Status in linux-hwe-5.11 package in Ubuntu: Incomplete Bug description: Hello! After the upgrade to the 5.8 series kernel to the 5.11 series kernel, I have noticed some screen flickering. I had the same problem previously on Fedora after upgrading to the 5.0 series kernel, but this was not present on Ubuntu 20.04 on either the 5.4 or 5.8 series kernels. On Fedora, it was fixed by turning off panel self-refresh on my Dell XPS 13 9380. I can try that again here if you all think it would be a useful piece of information. In the Fedora bug, it was reported that this problem is fixed in the 5.13 kernel. Let me know whatever else I can do. Thanks! Ben ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22 Uname: Linux 5.11.0-25-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sat Aug 7 18:56:38 2021 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu DpkgLog: ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (prog-if 00 [VGA controller]) Subsystem: Dell UHD Graphics 620 (Whiskey Lake) [1028:08af] InstallationDate: Installed on 2021-06-24 (44 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) MachineType: Dell Inc. XPS 13 9380 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/usr/bin/fish ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_l80o1s@/vmlinuz-5.11.0-25-generic root=ZFS=rpool/ROOT/ubuntu_l80o1s ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/27/2021 dmi.bios.release: 1.14 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.14.0 dmi.board.name: 0KTW76 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.14.0:bd05/27/2021:br1.14:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9380 dmi.product.sku: 08AF dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.105-3~20.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.2~20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1~20.04.2 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 2:2.99.917+git20200226-1 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-hwe-5.11/+bug/1939211/+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
