Interesting dual GPU setup. In theory GNOME should be using the primary GPU (Intel) only.
One exception to that would be if you have a monitor plugged into one of the AMD GPU ports, in which case scanout would be via AMD but the rendering still on Intel. Can we be sure amdgpu is not involved at all here? -- 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/1958620 Title: Flickering white/black screen once KMS comes up Status in linux package in Ubuntu: Confirmed Bug description: This looks like a regression from the 5.13.0-20-generic kernel to the 5.15.0-17-generic kernel. The display works fine under efifb, but as soon as the DRM drivers are loaded and KMS kicks in the display is replaced by black with flickering white (apparently when what would be on the output changes). ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-17-generic 5.15.0-17.17 ProcVersionSignature: Ubuntu 5.13.0-20.20-generic 5.13.14 Uname: Linux 5.13.0-20-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu75 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 7134 F.... pipewire-media- /dev/snd/seq: chris 7133 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jan 21 17:07:08 2022 InstallationDate: Installed on 2021-06-26 (208 days ago) InstallationMedia: Ubuntu 21.10.0 2021.05.28 amd64 "bcachefs" (20210622) MachineType: Dell Inc. XPS 15 9575 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-20-generic root=UUID=ff90803a-eedd-429b-bb78-b713f7c661d6 ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.13.0-20-generic N/A linux-backports-modules-5.13.0-20-generic N/A linux-firmware 1.204 SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2021-10-28 (84 days ago) dmi.bios.date: 07/07/2019 dmi.bios.release: 1.7 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.1 dmi.board.name: 0C32VW dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 31 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.7.1:bd07/07/2019:br1.7:svnDellInc.:pnXPS159575:pvr:sku080D:rvnDellInc.:rn0C32VW:rvrA00:cvnDellInc.:ct31:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9575 dmi.product.sku: 080D dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958620/+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
