Public bug reported:
It appears that when installing new versions of software, snapd fails to delete
the dev-loops for older versions.
With Ubuntu 18.04 running on an X-1 Carbon Thinkpad (5th Generation)
with an SSD, my logins after the screen locked became slow. There would
be a delay of maybe 10 to 15 seconds before the login would complete. So
I updated to 19.10. Same story.
Running "systemd-analyze blame," I saw a lot of time-using entries for
"dev-loop[number]."
Running "losetup-a," I was able to see that some of the loops pertained
to obsolete versions of software, especially prior versions of gnome.
After I used "losetup -d" to delete such loops, my logins are quick
again.
>From what I've read online, it seems that snapd fails to delete such old
loops and this is what causes the delay.
What I expected:
My login would be practically instant.
What happened:
My login took 10 to 15 seconds.
Steps to reproduce the behavior:
The problem occurred consistently, with every login from the lockscreen. When I
first installed 18.04 this did not occur.
By the way, when I tried to report this issue using Apport ("ubuntu-bug
snapd"), I received the message "The problem cannot be reported. This is
not an official Ubuntu package."
Architecture: AMD64
Desktop: Gnome
DistroRelease: Ubuntu 19.10
InstallationDate: 2017-12-08 (762 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" Release amd64 (20171018)
ProcVersionSignature: Linux 5.3.0-24-generic 5.3.10
Tags: eoan wayland-session
Uname: Linux 5.3.0-24-generic x86_64
Upgrade status: Upgraded to Eoan on 2019-12-19 (22 days ago)
** Affects: snapd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1859160
Title:
Snapd fails to delete obsolete dev-loops, thus causing delay at
lockscreen
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