Bug#1122969: mutter: Mutter crashes during start

[Simon McVittie]

Control: tags -1 + moreinfo

On Mon, 15 Dec 2025 at 11:10:20 +0100, Leo Unglaub wrote:
>[   18.184324] Mutter Input Th[3070]: segfault at 80 ip 
>00007f2e47a67d84 sp 00007f2e08fe83e8 error 4 in 
>libxkbcommon.so.0.12.3[2ed84,7f2e47a3f000+2b000] likely on CPU 26 
>(core 10, socket 0)

Please try downgrading xkb-data to version 2.42-1 (from testing) and put 
it on hold in apt, then report back whether this fixed the crash.

xkb-data has a critical bug (#1122805) which is breaking a lot of other 
software at the moment.

>-- System Information:
>Debian Release: forky/sid
>  APT prefers unstable
>  APT policy: (500, 'unstable')
>Architecture: amd64 (x86_64)

I would recommend that users of unstable should always have testing 
available as a second apt source, so that broken packages in unstable 
can be downgraded to their testing versions until they are fixed.

I would also recommend installing the apt-listbugs package, which can 
warn you when the packages you are about to install or upgrade have 
release-critical bugs.

     smcv