frequent, massive image corruptions on TGL-U (TGL UP3) since v5.12-rc1
See the attached GIF. Screen image corruptions are found with 100% fail rate on TGL-U platforms running kernel >= v5.12-rc1 while 5.11.0-16-generic kernel from Ubuntu Hirsute has no such problem.
- drmtip 5.12.0-051200rc8drmtip20210420-generic: affected
- mainline v5.12-rc1: affected
- ubuntu 5.12.0-8-generic: affected
- ubuntu 5.11.0-16-generic: not affected
Steps to reproduce
Basically this should appear frequently whenever screen image updates. One might also take following steps to trigger it more easily:
- Launch several applications/windows
- Hold meta key (Windows key)
- Press any of the arrow keys quickly
System Info
- system architecture: x86_64
- kernel version: 5.12.0-051200rc8drmtip20210420-generic
- Linux distribution: Ubuntu 20.04 Focal
- Machine or mother board model: [dmi.txt]
- Display connector: eDP
- dmesg: dmesg.5.12.0-051200rc8drmtip20210420-generic.drm-debug
Additional Info
- Screenshot:
- xrandr: xrandr-verbose.txt
Edited by You Sheng Yang (Vicamo)