I did some additional tests: - First by testing with the future kernel under development (5.4 RC0) and I found the same problem (no improvement)
- I searched the web and found similar problems with other people like for example here: https://bugzilla.redhat.com/show_bug.cgi?id=1723167 https://ubuntuforums.org/showthread.php?t=2339302 Following their recommendation, I therefore disabled the Intel PSR function in the grub configuration ("i915.enable_psr=0" in /etc/default/grub) so that the kernel does not activate it at boot time and indeed with this feature disabled, I no longer have the display corruption problem. The problem is that this feature is used to last longer on battery, so it's something useful on a laptop (especially since it worked well with older kernels <5.2). Could you please fix the display corruption problem without disabling this power saving feature for cpu intel. In the meantime, I leave this feature disabled because display corruption is too annoying. Translated with www.DeepL.com/Translator ** Bug watch added: Red Hat Bugzilla #1723167 https://bugzilla.redhat.com/show_bug.cgi?id=1723167 -- 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/1844384 Title: Display bug with kernel 5.2/5.3 on Dell XPS 13 Status in linux package in Ubuntu: Confirmed Bug description: Hello, I use in multiboot Ubuntu and Archlinux, I had the opportunity to use many kernels and I notice a random display problem (see screenshot) that happens from time to time on my Dell XPS but only from kernel 5.2 (and following). Under Ubuntu 19.04 with the 5.0 kernel I don't have this problem, under Archlinux with the old kernels (4.19LTS, 5.0, 5.1) I didn't have this problem either. But since 5.2 whether it is under Ubuntu or Archlinux, I have noticed this problem which is difficult to describe, it is a kind of band that appears at the top of the screen with a different size (sometimes very wide). The problem occurs randomly, sometimes it can go 30 minutes without seeing it appear and sometimes it can appear full of times for a few minutes. The problem is not specific to Ubuntu but to the kernel since 5.2 and following. Under the 19.10 of Ubuntu in development with the 5.3 kernel, the problem is still present. Could you please forward this bug to the team that deals with the linux kernel. (the 2 screenshots were taken under Ubuntu 19.10 with the 5.3 kernel but under Archlinux it's the same thing. Configuration : Dell XPS 13 model 2019 (9380) Graphics chipset: Intel® UHD 620 (Whiskey Lake 3x8 GT2) Noted that this problem can occur regardless of the activity on the desktop (browser, video player...), sometimes the screen skips completely for a tenth of a second. Please correct the problem quickly capture1: https://nsa40.casimages.com/img/2019/09/17/190917050728230823.jpg capture2: https://nsa40.casimages.com/img/2019/09/17/190917050801231741.jpg --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: simon 22176 F.... pulseaudio /dev/snd/pcmC0D0p: simon 22176 F...m pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.10 InstallationDate: Installed on 2019-07-18 (60 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: Dell Inc. XPS 13 9380 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-10-generic root=UUID=d10cf0fc-051d-4ccd-b2da-e944d0ddd735 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.3.0-10.11-generic 5.3.0-rc8 RelatedPackageVersions: linux-restricted-modules-5.3.0-10-generic N/A linux-backports-modules-5.3.0-10-generic N/A linux-firmware 1.182 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: eoan Uname: Linux 5.3.0-10-generic x86_64 UpgradeStatus: Upgraded to eoan on 2019-09-17 (0 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/05/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.0 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.:bvr1.7.0:bd08/05/2019: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. modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2019-07-18T20:23:25.974818 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1844384/+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
