Bug#1031847: gnome-shell: Gnome crashes when laptop connected to ThinkPad Universal Thunderbolt 4 Dock (40B0), Oh no! Something has gone wrong error appears.

[Simon McVittie]

Control: reassign -1 libcolord2 1.4.6-2.1
Control: affects -1 + gnome-shell liblcms2-2
Control: forwarded -1 https://github.com/hughsie/colord/pull/146
Control: tags -1 + patch

On Fri, 24 Feb 2023 at 10:33:42 +0000, Simon McVittie wrote:
> On Fri, 24 Feb 2023 at 05:50:06 +0100, Kuba wrote:
> > Bug is described here: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6162
> > and if I understand correctly, it is diagnosed as some dependency issue.
> 
> From the linked issue report it looks like this is a bug in lcms fixed by
> <https://github.com/mm2/Little-CMS/issues/344>, combined with a bug in
> colord fixed by <https://github.com/hughsie/colord/pull/146>.

On closer inspection, Debian's lcms2 already has the patch to fix that bug,
so this is purely a colord issue. It's possible that this regressed when
lcms2 was updated in January.

Anyone who doesn't have the right hardware will probably not be able
to reproduce this. Kuba, please could you try the packages from here?
https://people.debian.org/~smcv/bug1031847/

(Those test packages have the patch referenced here, plus the patches
that I already proposed on #1025554.)

I suspect that Thunderbolt docks will become increasingly widespread
during the Debian 12 release's lifetime, so it would be good to get this
fixed before the next phase of the freeze, which would mean an upload
within the next few days (cc'ing seb128 who sponsored the last upload).

Thanks,
    smcv