If the BIOS allows you to switch to discrete graphics only (use dGPU for everything and disable the iGPU) then you would be able to use the Nvidia driver for all displays and that would avoid the bug.
-- 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/2017323 Title: Xorg multi-monitor setup truncated at 16384 pixels Status in linux package in Ubuntu: Opinion Status in mutter package in Ubuntu: Invalid Status in xorg-server package in Ubuntu: Won't Fix Bug description: I have three monitors arranged horizontally left-to-right, with fractional scaling enabled in Xorg mode (not Wayland): #1: laptop, 3840x2400 native, scaled at 225% #2: external monitor 1, 3840x2160 native, scaled at 150% (main display) #3: external monitor 2, 3840x2160 native, scaled at 150% In this setup, a little more than half of the rightmost monitor is truncated black. I suspect it is caused by oversampled screens (fractional scaling) not fitting into the maximum framebuffer size of 16384x16384, as evidenced by the following xrandr(1): $ xrandr | awk '/^[^ ]/ && $2 != "disconnected"' Screen 0: minimum 320 x 200, current 16384 x 4320, maximum 16384 x 16384 eDP-1 connected 5112x3195+0+0 (normal left inverted right x axis y axis) 366mm x 229mm DP-2 connected primary 7680x4320+5112+0 (normal left inverted right x axis y axis) 597mm x 336mm DP-3 connected 7680x4320+12792+0 (normal left inverted right x axis y axis) 597mm x 336mm ProblemType: Bug DistroRelease: Ubuntu 23.04 Package: xserver-xorg 1:7.7+23ubuntu2 ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6 Uname: Linux 6.2.0-20-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.0000.01.00.0: 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 525.105.17 Tue Mar 28 18:02:59 UTC 2023 GCC version: ApportVersion: 2.26.1-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: unknown CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Apr 21 18:51:29 2023 DistUpgraded: 2023-04-20 13:31:05,017 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py' DistroCodename: lunar DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation Alder Lake-P Integrated Graphics Controller [8086:46a6] (rev 0c) (prog-if 00 [VGA controller]) Subsystem: Dell Alder Lake-P Integrated Graphics Controller [1028:0aff] NVIDIA Corporation GA106M [GeForce RTX 3060 Mobile / Max-Q] [10de:2520] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell GA106M [GeForce RTX 3060 Mobile / Max-Q] [1028:0aff] MachineType: Dell Inc. XPS 17 9720 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_bm2y56@/vmlinuz-6.2.0-20-generic root=ZFS=rpool/ROOT/ubuntu_bm2y56 ro init_on_alloc=0 i915.enable_psr2_sel_fetch=0 SourcePackage: xorg UpgradeStatus: Upgraded to lunar on 2023-04-20 (1 days ago) dmi.bios.date: 03/20/2023 dmi.bios.release: 1.15 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.15.1 dmi.board.name: 0W7GHH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.15.1:bd03/20/2023:br1.15:svnDellInc.:pnXPS179720:pvr:rvnDellInc.:rn0W7GHH:rvrA00:cvnDellInc.:ct10:cvr:sku0AFF: dmi.product.family: XPS dmi.product.name: XPS 17 9720 dmi.product.sku: 0AFF dmi.sys.vendor: Dell Inc. mtime.conffile..etc.logrotate.d.apport: 2023-01-31T20:57:54.273339 version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.114-1 version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.2-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 23.0.2-1ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2017323/+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
