contents of /sys/class/drm lrwxrwxrwx 1 root root 0 Mar 25 13:16 card0 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0 lrwxrwxrwx 1 root root 0 Mar 25 13:16 card0-eDP-1 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1 lrwxrwxrwx 1 root root 0 Mar 25 13:16 card1 -> ../../devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 lrwxrwxrwx 1 root root 0 Mar 25 13:16 renderD128 -> ../../devices/pci0000:00/0000:00:02.0/drm/renderD128 lrwxrwxrwx 1 root root 0 Mar 25 13:16 renderD129 -> ../../devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/renderD129
-- 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/1918466 Title: Garbage window on external 4k display Status in linux package in Ubuntu: Confirmed Bug description: When connecting a 4k monitor to the DP port of a Lenovo TBT3 Gen2 dock and dock is connected to a P17 also with a 4k display if you change the scale to 100% and attempt to run any window based application like a browser window on the monitor you get periodic pop up areas of garbage. Happens more if the window is closer to the left side than if in the middle of the screen. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: z 2161 F.... pulseaudio /dev/snd/controlC0: z 2161 F.... pulseaudio /dev/snd/controlC1: z 2161 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-sutton-focal-amd64-20201012-119+sutton-simon-focal-amd64+iso DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2021-01-04 (65 days ago) InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 20201012-17:03 MachineType: LENOVO 20SNZ5GCUS NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.6.0-1033-oem root=UUID=79aeb320-7842-4144-b3d7-30a10d0f8d0e ro quiet splash ProcVersionSignature: Ubuntu 5.6.0-1033.35-oem 5.6.19 RelatedPackageVersions: linux-restricted-modules-5.6.0-1033-oem N/A linux-backports-modules-5.6.0-1033-oem N/A linux-firmware 1.187.6 Tags: focal Uname: Linux 5.6.0-1033-oem x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/26/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N30ET32W (1.15 ) dmi.board.asset.tag: Not Available dmi.board.name: 20SNZ5GCUS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN30ET32W(1.15):bd10/26/2020:svnLENOVO:pn20SNZ5GCUS:pvrThinkPadP17Gen1:rvnLENOVO:rn20SNZ5GCUS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad P17 Gen 1 dmi.product.name: 20SNZ5GCUS dmi.product.sku: LENOVO_MT_20SN_BU_Think_FM_ThinkPad P17 Gen 1 dmi.product.version: ThinkPad P17 Gen 1 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1918466/+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
