Bug#963980:

[Dan Robinson]

I also had this issue on a fresh bullseye install.

I was able to get a different error message by commenting out the reference
to /etc/bumblebee/xorg.conf.d in /etc/bumblebee.conf, but then I get a
different error about a missing module 'mouse'.

Unfortunately I didn't have any time to troubleshoot any further and I
think there are other issues at play outside the scope of this bug (like
the fact that with the legacy Nvidia drivers there is no 'nvidia' module so
it's trying to use nouveau) so I'll probably have to try to solve all of
that before I can offer any more useful feedback on this bug.
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