[Bug 2161016] Re: [i915] External monitor no signal after resume (still appears connected, cursor moves there)

Update: Just now after resume the external Dell was stuck at 1024×768. Higher resolutions were not offered in Displays Settings. Toggling the display Off/On there did not restore the correct modes. Unplugging the cable and plugging it back in immediately restored the full resolution list and correct mode. I guess there is a resume-time link/EDID failure and the original “no signal but still connected” symptom was just a different manifestation. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161016 Title: [i915] External monitor no signal after resume (still appears connected, cursor moves there) Status in linux package in Ubuntu: New Bug description: Ubuntu 26.04, Wayland, Framework (Intel i915). After resume from sleep the external monitor shows no signal. GNOME still treats it as connected: cursor can be moved onto the external area and it appears in Displays Settings. Toggling the external display Off then On in Settings restores the image. I don't know how to easily reproduce it, but it just happened. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-134-generic 6.8.0-134.134 ProcVersionSignature: Ubuntu 6.8.0-134.134-generic 6.8.12 Uname: Linux 6.8.0-134-generic x86_64 ApportVersion: 2.28.2-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: beej 2915 F.... wireplumber /dev/snd/seq: beej 2910 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Thu Jul 16 15:22:50 2026 InstallationDate: Installed on 2023-09-13 (1037 days ago) InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223) MachineType: Framework Laptop ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-134-generic root=UUID=205f6f4d-6fcb-4438-8a9b-d2a2f2607288 ro quiet splash i915.enable_psr=0 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.8.0-134-generic N/A linux-backports-modules-6.8.0-134-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.27 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/27/2022 dmi.bios.release: 3.17 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 03.17 dmi.board.asset.tag: * dmi.board.name: FRANBMCP0B dmi.board.vendor: Framework dmi.board.version: AB dmi.chassis.asset.tag: FRANBMCPAB139100ME dmi.chassis.type: 10 dmi.chassis.vendor: Framework dmi.chassis.version: AB dmi.modalias: dmi:bvnINSYDECorp.:bvr03.17:bd10/27/2022:br3.17:svnFramework:pnLaptop:pvrAB:rvnFramework:rnFRANBMCP0B:rvrAB:cvnFramework:ct10:cvrAB:skuFRANBMCP0B: dmi.product.family: FRANBMCP dmi.product.name: Laptop dmi.product.sku: FRANBMCP0B dmi.product.version: AB dmi.sys.vendor: Framework To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161016/+subscriptions