FWIW I also just tried 24.04 as well as the latest BIOS update (1.37). The issue appears to be significantly worse. I was initially unable to boot into a desktop environment at all.
Changing the BIOS setting for Display to Discrete (from Hybrid) meant that everything worked but monitor detection was broken in Wayland so I've stayed with Xorg where it is only partially broken. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1973098 Title: [i915] Intermittent freezing and LSPCON init failed kernel messages Status in linux package in Ubuntu: Confirmed Status in linux-signed-oem-5.14 package in Ubuntu: Confirmed Bug description: Hardware: Lenovo ThinkPad model 20ST0055AU Boot messages show: [ 6.397804] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon [ 6.397901] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0 During normal operation there will intermittently be a freeze for a second or two and then more of these messages display in the kernel logs: [ 505.487006] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon [ 505.487072] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D [ 506.747930] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon [ 506.748018] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D The system will then become operational again. The system is still usable, but it is annoying. I've switched onto this OEM kernel from the generic kernel (5.13), as I had other problems with 5.13 regarding external displays not coming back after idle timeouts. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.14.0-1036-oem 5.14.0-1036.40 ProcVersionSignature: Ubuntu 5.14.0-1036.40-oem 5.14.21 Uname: Linux 5.14.0-1036-oem x86_64 ApportVersion: 2.20.11-0ubuntu27.23 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu May 12 10:29:31 2022 InstallationDate: Installed on 2021-05-05 (371 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) SourcePackage: linux-signed-oem-5.14 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973098/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
