[SOLVED] Snap hangs during shutdown, cannot remove snaps due to change in progress

[Spectrum]

Hi! I am running Kubuntu 20.04. I have the following problem: When I shut down my system, it takes a long time to shut down. The shutdown screen says:

A stop job is running for Snap Daemon (... / 1min 30s)

This happens on every shutdown, and hangs until the 1 min 30 seconds time out. In an attempt to debug this I figured I'd remove some of my snaps.

I have the following snap packages:

spectrum@spectrum-desktop:~$ snap list
Name                    Version                  Rev   Tracking       Publisher   Notes
chromium                83.0.4103.61             1165  latest/stable  canonical✓  -
core18                  20200427                 1754  latest/stable  canonical✓  base
foobar2000              1.5.4                    295   latest/stable  mmtrt       -
gtk-common-themes       0.1-36-gc75f853          1506  latest/stable  canonical✓  -
snapd                   2.45                     7777  latest/stable  canonical✓  snapd
spotify                 1.1.26.501.gbe11e53b-15  41    latest/stable  spotify✓    -
wine-platform-5-stable  5.0.1                    5     latest/stable  mmtrt       -
wine-platform-runtime   v1.0                     136   latest/stable  mmtrt       -

I want to remove foobar2000 and chromium.

spectrum@spectrum-desktop:~$ sudo snap remove foobar2000
[sudo] password for spectrum: 
2020-06-27T10:45:21+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:27+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:32+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:38+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:43+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:48+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:53+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:45:58+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:06+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:11+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:16+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:22+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:27+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:32+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:38+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:43+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:48+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:53+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:46:59+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:47:04+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:47:10+02:00 INFO Waiting for conflicting change in progress...
2020-06-27T10:47:15+02:00 INFO Waiting for conflicting change in progress...
Disconnect interfaces of snap "foobar2000"                                                                           |
2020-06-27T10:47:20+02:00 INFO Waiting for conflicting change in progress...
error: change finished in status "Undone" with no error message

foobar2000 would loop forever with that message until I cancelled it using Ctrl+C.

Now trying to remove chromium:

spectrum@spectrum-desktop:~$ sudo snap remove chromium  
error: snap "chromium" has "auto-refresh" change in progress
spectrum@spectrum-desktop:~$ snap changes
ID   Status  Spawn                      Ready                    Summary
23   Undone  4 days ago, at 14:53 CEST  yesterday at 16:34 CEST  Auto-refresh snaps "snapd", "chromium", "wine-platform-runtime"
26   Doing   yesterday at 16:34 CEST    -                        Auto-refresh snaps "chromium", "wine-platform-runtime", "snapd"
27   Undone  yesterday at 16:56 CEST    yesterday at 16:56 CEST  Remove "foobar2000" snap
28   Undone  today at 10:45 CEST        today at 10:47 CEST      Remove "foobar2000" snap

spectrum@spectrum-desktop:~$ sudo snap abort 26
spectrum@spectrum-desktop:~$ snap changes
ID   Status  Spawn                      Ready                    Summary
23   Undone  4 days ago, at 14:53 CEST  yesterday at 16:34 CEST  Auto-refresh snaps "snapd", "chromium", "wine-platform-runtime"
26   Abort   yesterday at 16:34 CEST    -                        Auto-refresh snaps "chromium", "wine-platform-runtime", "snapd"
27   Undone  yesterday at 16:56 CEST    yesterday at 16:56 CEST  Remove "foobar2000" snap
28   Undone  today at 10:45 CEST        today at 10:47 CEST      Remove "foobar2000" snap

spectrum@spectrum-desktop:~$ sudo snap remove chromium
error: snap "chromium" has "auto-refresh" change in progress
spectrum@spectrum-desktop:~$

It complains about a change in progress. Aborting the change in question does not help.

Am I doing this wrong? Thanks.

[exploder]

I am guessing because I do not have any snaps installed. Have you tried removing the snaps through Discover? Hopefully someone with experience with snaps will come along.

[GreyGeek]

Are you using EXT4? You may have a corrupted file system.
https://askubuntu.com/questions/1121...anging-on-boot

[Spectrum]

I am guessing because I do not have any snaps installed. Have you tried removing the snaps through Discover? Hopefully someone with experience with snaps will come along.

I could have sworn I had already tried that. But now I tried to remove the snaps via Discover and that got rid of them. Thanks!

I removed all the snaps I don't think I need (keeping only Spotify). And now the performance problem seems gone. Woo!