release upgrade fails due to `firefox package pre-installation script subprocess returned error exit status 1`

attached screenshot when upgrade completed

After reboot message

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1966589

I found this in /var/log/dist-upgrade/main.log:

2022-03-27 12:49:11,381 ERROR got an error from dpkg for pkg: '/tmp/apt-dpkg-install-FzL4nS/14-firefox_1%3a1snap1-0ubuntu1_amd64.deb': 'new firefox package pre-installation script subprocess returned error exit status 1'
2022-03-27 12:49:11,382 DEBUG running apport_pkgfailure() firefox: new firefox package pre-installation script subprocess returned error exit status 1
2022-03-27 12:49:11,386 ERROR got an error from dpkg for pkg: '/tmp/apt-dpkg-install-FzL4nS/14-firefox_1%3a1snap1-0ubuntu1_amd64.deb': 'new firefox package pre-installation script subprocess returned error exit status 1'

And looking Aptermlog.txt we see:

Preparing to unpack .../14-firefox_1%3a1snap1-0ubuntu1_amd64.deb ...^M
=> Installing the firefox snap^M
==> Checking connectivity with the snap store^M
==> Installing the firefox snap^M
2022-03-27T12:33:55Z INFO Waiting for automatic snapd restart...^M
error: cannot perform the following tasks:^M
- Run configure hook of "firefox" snap if present (run hook "configure": error: cannot create transient scope: DBus error "org.freedesktop.DBus.Error.TimedOut": [Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)])^M
dpkg: error processing archive /tmp/apt-dpkg-install-FzL4nS/14-firefox_1%3a1snap1-0ubuntu1_amd64.deb (--unpack):^M
 new firefox package pre-installation script subprocess returned error exit status 1^M
Please restart all running instances of firefox, or you will experience problems.^M

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Tested again - this time with TUI interface (do-release-upgrade) from a terminal and the upgrade finished with the error - "This upgrade has finished but there were errors.."
During the upgrade I noticed that the snap store was not contacted.
After reboot I noticed that Firefox was still the deb version - opened Discover to apply updates and noticed (see screenshot) that758.4 MB were waiting to update. Comments 6 to 14 are from this upgrade.

Also note - running lsb_release - r shows 22.04 (wallpaper not updated) and Prompt shows = Prompt=lts

I thought best to not file a new bug report as it seems to be same result of snap store.

I was able to recreate this on an Ubuntu 20.04 LTS system by editing /etc/apt/sources.list so that focal was replaced with jammy and then running `sudo apt-get update` and `sudo apt-get dist-upgrade`. I then found the following in the terminal:

Errors were encountered while processing:
 /tmp/apt-dpkg-install-pYF5m8/17-firefox_1%3a1snap1-0ubuntu1_amd64.deb
Error: Timeout was reached
E: Sub-process /usr/bin/dpkg returned an error code (1)

And the same error as posted earlier in /var/log/apt/term.log:

==> Installing the firefox snap^M
error: cannot perform the following tasks:^M
- Run configure hook of "firefox" snap if present (run hook "configure": error: cannot create transient scope: DBus error "org.freedesktop.DBus.Error.TimedOut": [Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)])^M
dpkg: error processing archive /tmp/apt-dpkg-install-pYF5m8/17-firefox_1%3a1snap1-0ubuntu1_amd64.deb (--unpack):^M
 new firefox package pre-installation script subprocess returned error exit status 1^M

the error is similar to the one on bug #1965805 which was said to be fixed by the new snapd, it would be worth checking if upgrading snapd on the system before upgrading fixes the issue

I followed the same test, s/focal/jammy/ in /etc/apt/sources.list and apt-get update. I then first installed the new snapd from jammy:

...
Preparing to unpack .../6-snapd_2.55.2+22.04_amd64.deb ...
Unpacking snapd (2.55.2+22.04) over (2.54.3+20.04.1ubuntu0.2) ...
...
Setting up snapd (2.55.2+22.04) ...
Installing new version of config file /etc/apparmor.d/usr.lib.snapd.snap-confine.real ...
snapd.failure.service is a disabled or a static unit, not starting it.
snapd.snap-repair.service is a disabled or a static unit, not starting it.
...

I then ran "sudo apt-get dist-upgrade" but I still encountered the same error:

Errors were encountered while processing:
 /tmp/apt-dpkg-install-DY0azb/17-firefox_1%3a1snap1-0ubuntu1_amd64.deb
Error: Timeout was reached
E: Sub-process /usr/bin/dpkg returned an error code (1)

Status changed to 'Confirmed' because the bug affects multiple users.

@brian-murray Brian

Tested Dell Latitude 7280 box 03.04.2022

Before running the upgrade Lubuntu Focal to Lubuntu Jammy I installed Firefox snap with command
"snap install firefox" rebooted and ran the "sudo do-release-upgrade -d".

The system upgraded and without errors.

Tested Dell [ Optiplex] MT 7040, and also Dell [ Optiplex] MT 7040,upgrading from Lubuntu Focal 20.04,4 to Lubuntu Jammy tests dated 04-04-2022 - upgrades performed with no errors.

http://iso.qa.ubuntu.com/qatracker/milestones/429/builds/246405/testcases/1635/results/

@leok - The testing which you referred to in comment #23 - did you first install the firefox snap or did you let the upgrade proceed as normal?

@brian-murray

No I did not install the Firefox snap prior to upgrade.
Just performed normal upgrades.
All Lubuntu Jammy upgrades I performed since 04-04-2022 from Focal and Impish upgraded with no errors and no problem with the Firefox snap.

The last upgrades test results here : http://iso.qa.ubuntu.com/qatracker/milestones/429/builds/246675/testcases

It looks to me that this issue is fixed.

I tested a release upgrade of Ubuntu today and did not encounter an error with the Firefox package. Additionally, we can see in apt-term.log that there was no error:

Preparing to unpack .../15-firefox_1%3a1snap1-0ubuntu2_amd64.deb ...^M
=> Installing the firefox snap^M
==> Checking connectivity with the snap store^M
==> Installing the firefox snap^M
^[[1mWarning:^[[0m /snap/bin was not found in your $PATH. If you've not restarted your^M
         session since you installed snapd, try doing that. Please see^M
         https://forum.snapcraft.io/t/9469 for more details.^M
^M
firefox 99.0-2 from Mozilla^[[32m\u2713^[[0m installed^M
=> Snap installation complete^M
Unpacking firefox (1:1snap1-0ubuntu2) over (99.0+build2-0ubuntu0.20.04.2) ...^M

Subsequently, I'm setting this to Fix Released.

I beg to differ.

The error still occurs on 2020 LTS and on 2022 LTS upgrades. The workaround is to open xterm and run `killall snap`. Only then the upgrade can progress with an error.

Use xterm because at this point other terminal emulators don't work.