apport information ** Attachment added: "ProcInterrupts.txt" https://bugs.launchpad.net/bugs/2077405/+attachment/5812110/+files/ProcInterrupts.txt
-- 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/2077405 Title: External screen flashing and cannot use after laptop lid closed Status in linux package in Ubuntu: Incomplete Bug description: With Kernel 6.8.0-40 (upgraded yesterday) a) the external screen connected to my Lenovo T14 ThinkPad randomly turns black for a few seconds and then recovers, b) the laptop cannot be used after the lid has been closed. The power LED is lit (no stand-by) but screen is blank. No reaction to any key, also cannot open a terminal with Ctrl-Alt-Fx. Only a hard reset is possible. None of these problems occur with Kernel 6.5.0-45. I have previously attempted to use Ubuntu 24.04 LTS but faced exactly the same issues, therefore I re-installed Ubuntu 22.04 LTS which was working stable until yesterdays kernel upgrade. While working with 24.04 LTS for a few weeks I also noted frequent, random and complete system freezes which made it unusable with that laptop. $ lsb_release -rd Description: Ubuntu 22.04.4 LTS Release: 22.04 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.8.0-40-generic 6.8.0-40.40~22.04.3 ProcVersionSignature: Ubuntu 6.8.0-40.40~22.04.3-generic 6.8.12 Uname: Linux 6.8.0-40-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.6 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: XFCE Date: Tue Aug 20 10:27:32 2024 InstallationDate: Installed on 2024-08-05 (14 days ago) InstallationMedia: Xubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240216.1) SourcePackage: linux-signed-hwe-6.8 UpgradeStatus: No upgrade log present (probably fresh install) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu82.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: oligri 1236 F.... pulseaudio CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: XFCE DistroRelease: Ubuntu 22.04 InstallationDate: Installed on 2024-08-05 (27 days ago) InstallationMedia: Xubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240216.1) MachineType: LENOVO 20S0007LMX Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-40-generic root=/dev/mapper/vgxubuntu-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 6.8.0-40.40~22.04.3-generic 6.8.12 RelatedPackageVersions: linux-restricted-modules-6.8.0-40-generic N/A linux-backports-modules-6.8.0-40-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.31 Tags: jammy Uname: Linux 6.8.0-40-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/26/2020 dmi.bios.release: 1.13 dmi.bios.vendor: LENOVO dmi.bios.version: N2XET23W (1.13 ) dmi.board.asset.tag: Not Available dmi.board.name: 20S0007LMX dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.7 dmi.modalias: dmi:bvnLENOVO:bvrN2XET23W(1.13):bd08/26/2020:br1.13:efr1.7:svnLENOVO:pn20S0007LMX:pvrThinkPadT14Gen1:rvnLENOVO:rn20S0007LMX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20S0_BU_Think_FM_ThinkPadT14Gen1: dmi.product.family: ThinkPad T14 Gen 1 dmi.product.name: 20S0007LMX dmi.product.sku: LENOVO_MT_20S0_BU_Think_FM_ThinkPad T14 Gen 1 dmi.product.version: ThinkPad T14 Gen 1 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2077405/+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
