video locks up under kodi

[Jerry Quinn]

jlquinn@jenks:~/bug$ lsb_release -d
Description: Ubuntu 20.04.2 LTS
jlquinn@jenks:~/bug$ apt-cache policy linux-image-5.8.0-59-generic
linux-image-5.8.0-59-generic:
  Installed: 5.8.0-59.66~20.04.1
  Candidate: 5.8.0-59.66~20.04.1
  Version table:
 *** 5.8.0-59.66~20.04.1 500
        500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
        100 /var/lib/dpkg/status

I have an Intel NUC 5PPYB hooked up to an AOC 4K monitor. I tried to run kodi for the first time, added a video, and tried to play it. The console locked up hard. Mouse doesn't move and I cannot get to a virtual terminal either. I can still ssh into the system.

Eventually I see a kworker task blocked for a long time.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-59-generic 5.8.0-59.66~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-59.66~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-59-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sat Jul 10 22:14:20 2021
InstallationDate: Installed on 2021-06-29 (11 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)

[Jerry Quinn (jlquinn)]

Video lockup is reproducible.

This may not be a kernel issue. Switching to wayland display server doesn't lock up this way.