[Bug 2085052] [NEW] Thunderbird needs *minutes* to start up after Ubuntu 24.04 upgrade, due to Snap transition

[Jens]

Public bug reported:

I just upgraded my system to Ubuntu 24.04, which apparently included
upgrading Thunderbird to the new Snap package. After restarting the
system, I noticed two things:

1) thunderbird wouldn't start
2) The complete system was really slow.

After some digging I noticed there was a copy job running, something
along the lines of "cp -a ~/.thunderbird ~/snap/thunderbird", I don't
recall the complete command line, but I get what this intended to do.
Since I have about 10 GB of local mail stored in Thunderbird, this took
a while, despite using a SSD.

IMHO, this should have been a file move operation, not a copy (which
would have been instantenous). But even then, if a copy is required for
some reason, users should be visibly notified of such a transition. This
can be as easy as requiring "libnotify-bin" (a 9kb dependancy!) and
putting

notify-send -t 30000 -a "Thunderbird"  "Thunderbird needs to copy your
mails to a new location. This may take a few minutes. It will start
after the transition is complete."

in the script just before the copy job.

Can you please implement some user notification like this?

Thank you!

** Affects: thunderbird (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Thunderbird needs *minutes* to start up after Ubuntu 24.04 upgrade,
  due to Snap transition

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