** Package changed: ubuntu-release-upgrader (Ubuntu) => linux (Ubuntu) -- 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/1939222
Title: DisplayPort over USB-C not working after release update Status in linux package in Ubuntu: Confirmed Bug description: After (automated) update from 5.8.0-63 to 5.11.0.-25 the displayport over usb-c (Thinkpad e15gen2 i5-1135G7 / GeForce MX450/PCIe/SSE2) is not working properly. Revert to 5.8.0-63 resolves the problem. The problem is independent of nvdia-drivers (tried 470, 460 and intel only drivers). Same Monitors connected over HDMI work properly. Problem is limited to displayport over usb-c. Problem symptoms: Monitor atttached over displayport allows only VGA resolution(1024 * 768) and flickers (on/off periodically). no special error messages found in dmesg except for abundance of "i915 0000:00:02.0: [drm] *ERROR* failed to enable link training" ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubuntu-release-upgrader-core 1:20.04.35 ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22 Uname: Linux 5.11.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Sun Aug 8 09:12:10 2021 InstallationDate: Installed on 2021-06-14 (54 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) PackageArchitecture: all ProcEnviron: LANGUAGE=en_IL:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_IL SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader Symptom: release-upgrade UpgradeStatus: No upgrade log present (probably fresh install) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939222/+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
