# ... without rendering it completely unusable to everyone severity 992592 important tags 992592 moreinfo unreproducible user debian-rele...@lists.debian.org usertags 992592 + bsp-2022-10-de-karlsruhe thank you
Pavel Sanda wrote...
> updating debian to bullseye killed access to my desktop environment.
> It was actually stretch->buster and then (after appropriate reboots etc.)
> buster->bullseye, so not sure which of two steps broke it.
Looking into that issue, I failed to reproduce it. So I started with
stretch and did both dist-upgrades up to bullseye, and still lightdm
starts up as expected.
> lightdm used to be default DM and was not working anymore after the update.
> Checking logs with
> lightdm --test-mode --debug
> showed critical line about missing /var/lib/lightdm/data like in bugs
> #947319 and #931335.
This is strange since in postinst, /var/lib/lightdm/ is created if
missing, and permissions are set as needed by lightdm. I'd expect
breakage only in conditions you would have noticed anyway - like
unfinished installation, or full disk.
In case you still have the files around (or still can reproduce the
problem), the content of /var/log/lightdm/ should contain more bits
what's going wrong. Out of curiosity, did you purge packages no longer
needed after the upgrade (as listed by deborphan)?
Christoph (not the lightdm maintainer, just trying to help here)
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