Or it could be the framebuffer compression or other power saving things. Since the last relevant kernel message is:
[180893.945295] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. Does TLP tweak anything in that area? And does the bug occur without TLP? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1844934 Title: screen jitter after long idle Status in OEM Priority Project: Confirmed Status in xorg-server package in Ubuntu: Incomplete Bug description: It's 1st time happens on my xps13 9380 with bionic + oem kernel 4.15.0-1056-oem. I have updated to 1056 from 1050 for several days, this issue not happens for these days and not experienced it on 1050 as well. So, looks it's just randomly happens or I can not find a static way to reproduce it. I also not sure if unattended upgrade bring in some regression. So, my plan would be 1. do apt full-upgrade, and if it still can be reproduce then. 2. try mainline kernel ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-1056.65-oem 4.15.18 Uname: Linux 4.15.0-1056-oem x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon Sep 23 00:14:35 2019 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Device [8086:3ea0] (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:08af] InstallationDate: Installed on 2019-08-11 (42 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. XPS 13 9380 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-1056-oem root=UUID=d6c42edb-0a08-49cc-89e9-fe4df2d0c5e1 ro SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/14/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.1 dmi.board.vendor: Dell Inc. dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.1:bd02/14/2019:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9380 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.97-1ubuntu1~18.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.8-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.8-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A 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 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1844934/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
