If Kubuntu installation fails, Plasma crashes when attempting to launch once Calamares quits

[Aaron Rainbolt]

OS: Kubuntu Noble.
Hardware: Raw QEMU VM.

Attempt to install Kubuntu using Calamares. It will fail due to https://bugs.launchpad.net/ubuntu/+source/calamares/+bug/2054795. After installation failure however, Plasma will attempt to launch, and then crash, possibly multiple times.

This is because Calamares is causing /home/kubuntu/.cache to be owned by root. This trips up Plasma and causes it to crash.

The solution is to `chown -R 1000:1000 /home/kubuntu/.cache` immediately after kubuntu-installer-prompt exits in /usr/libexec/start-kubuntu-live-env. This fixes the ownership of the directory before Plasma starts. I've tested this in a VM and it works.

[oldfred (oldfred)]

Crash occurs both with try Kubuntu and when installer crashes with this error
Main script file /usr/lib/x86_64-linux-gnu/calamares/modules/networkcfg/main.py for python job networkcfg raised an exception

Graphics during install are still Lubuntu.

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

This should be fixed in 24.04.6:

kubuntu-installer-prompt (24.04.6) noble; urgency=medium

  * Get rid of d/source/options, it was causing the entire Git repo to get
    packaged into the source tarball.
  * Don't launch the installer prompt with `sudo -E`, it causes `~/.cache` to
    become owned by root.
  * Remove the obsolete fix for #2055726 from last upload, not using `sudo -E`
    to launch the prompt fixed the issue.

 -- Aaron Rainbolt <email address hidden> Mon, 04 Mar 2024 21:19:07 -0600