Public bug reported: After upgrading the packages on 25.10 kubuntu (which installed Linux 6.17.0-29), display is freezing when the 2nd monitor is connected. If two monitors are connected during boot, display freezes within a few seconds after logging in. If booting with a single monitor, it works fine until the second monitor is connected - after connecting, it hangs within a few seconds.
This doesn't happen when booting into the previous kernel version, 6.17.0-20. Using KDE on Wayland; graphics: 00:02.0 VGA compatible controller: Intel Corporation Coffee Lake-S GT2 [UHD Graphics P630] 01:00.0 VGA compatible controller: NVIDIA Corporation GP104GLM [Quadro P3200 Mobile] (rev a1) prime-select set to on-demand. This seems very similar to AskUbuntu question for 26.01 [1], except that for me, the display freezes even when not moving the mouse on the second monitor. It is sufficient that the 2nd display is connected. According to this AskUbuntu question, the issue was fixed with the next kernel/nvidia update on 26.04, but apparently not on 25.10. [1] https://askubuntu.com/questions/1566203/kubuntu-26-04-ui-freeze- when-moving-mouse-on-external-monitor/1567182#1567182 ProblemType: Bug DistroRelease: Ubuntu 25.10 Package: linux-image-6.17.0-29-generic 6.17.0-29.29 ProcVersionSignature: Ubuntu 6.17.0-20.20-generic 6.17.13 Uname: Linux 6.17.0-20-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.33.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: avn 3167 F.... wireplumber /dev/snd/controlC0: avn 3167 F.... wireplumber /dev/snd/controlC1: avn 3167 F.... wireplumber /dev/snd/seq: avn 3162 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Tue May 26 00:17:20 2026 InstallationDate: Installed on 2019-01-08 (2695 days ago) InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2) MachineType: Micro-Star International Co., Ltd. WE73 8SK ProcFB: 0 i915drmfb 1 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-20-generic root=UUID=801bc029-8bee-4b9b-b1e5-65eea764455b ro quiet splash pcie_aspm=off vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: firmware-sof N/A linux-firmware 20250901.git993ff19b-0ubuntu1.11 SourcePackage: linux UpgradeStatus: Upgraded to questing on 2026-02-07 (108 days ago) dmi.bios.date: 05/20/2019 dmi.bios.release: 1.15 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: E17C5IWS.10F dmi.board.asset.tag: Default string dmi.board.name: MS-17C5 dmi.board.vendor: Micro-Star International Co., Ltd. dmi.board.version: REV:1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Micro-Star International Co., Ltd. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE17C5IWS.10F:bd05/20/2019:br1.15:svnMicro-StarInternationalCo.,Ltd.:pnWE738SK:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-17C5:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:sku17C5.1: dmi.product.family: WE dmi.product.name: WE73 8SK dmi.product.sku: 17C5.1 dmi.product.version: REV:1.0 dmi.sys.vendor: Micro-Star International Co., Ltd. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug questing wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2154259 Title: Display freezes after connecting 2nd monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2154259/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
