I have linked the upstream bug report: https://gitlab.gnome.org/GNOME/mutter/-/issues/1966
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1966 https://gitlab.gnome.org/GNOME/mutter/-/issues/1966 ** Also affects: mutter via https://gitlab.gnome.org/GNOME/mutter/-/issues/1966 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1946367 Title: DisplayPort MST Hub only recognizes one of two displays using Wayland (NVIDIA) Status in Mutter: Unknown Status in mutter package in Ubuntu: New Bug description: I have two 4K Monitors connected to a single DisplayPort 1.4 Output via a DisplayPort 1.4 MST Hub working flawlessly under X.org. I have enabled nvidia-drm.modeset=1 in the GRUB CMDLINE Settings and switched to Wayland in the GDM Greeter. But it seems like Wayland is unable to drive multiple displays via a DisplayPort 1.4 MST Hub, because only one of them shows a display output. However they are both correctly recognized under the display settings. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: xorg 1:7.7+22ubuntu1 ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13 Uname: Linux 5.13.0-16-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon znvpair .proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file. .proc.driver.nvidia.capabilities.mig: Error: path was not a regular file. .proc.driver.nvidia.gpus.0000.2a.00.0: Error: path was not a regular file. .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.suspend: suspend hibernate resume .proc.driver.nvidia.suspend_depth: default modeset uvm .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 470.63.01 Tue Aug 3 20:44:16 UTC 2021 GCC version: ApportVersion: 2.20.11-0ubuntu70 Architecture: amd64 BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CasperMD5CheckResult: pass CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Thu Oct 7 15:05:07 2021 DistUpgraded: Fresh install DistroCodename: impish DistroVariant: ubuntu DkmsStatus: zfs, 2.0.6, 5.13.0-16-generic, x86_64: installed (WARNING! Diff between built and installed module!) ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GA102 [GeForce RTX 3080 Ti] [10de:2208] (rev a1) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation GA102 [GeForce RTX 3080 Ti] [10de:1535] InstallationDate: Installed on 2021-10-07 (0 days ago) InstallationMedia: Ubuntu 21.10 "Impish Indri" - Daily amd64 (20211006) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_10kpab@/vmlinuz-5.13.0-16-generic root=ZFS=rpool/ROOT/ubuntu_10kpab ro quiet splash nvidia-drm.modeset=1 vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/11/2021 dmi.bios.release: 5.17 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P3.20 dmi.board.name: X570 Phantom Gaming-ITX/TB3 dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP3.20:bd08/11/2021:br5.17:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:skuToBeFilledByO.E.M.:rvnASRock:rnX570PhantomGaming-ITX/TB3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. nvidia-settings: ERROR: Unable to find display on any available system ERROR: Unable to find display on any available system version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.107-8 version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.2-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1 To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1946367/+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
