[Bug 2143930] Re: Kubuntu 26.04 Calamares installer crash

[Launchpad Bug Tracker]

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

** Changed in: calamares-settings-ubuntu (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/2143930

Title:
  Kubuntu 26.04 Calamares installer crash

Status in subiquity:
  Invalid
Status in calamares package in Ubuntu:
  Invalid
Status in calamares-settings-ubuntu package in Ubuntu:
  Confirmed
Status in livecd-rootfs package in Ubuntu:
  Confirmed

Bug description:
  Last week I had this error part way thru install.

  Command <i>cp /etc/apt/sources.list.d/cdrom.sources /tmp/calamares-cdrom-sources/</i> finished with exit code 1.
  Output:
  cp: cannot stat '/etc/apt/sources.list.d/cdrom.sources': No such file or directory
  Review of broken install on drive, showed no /etc folder??

  Today's ISO March 11, 2026
  Error was bug reporting crashed soon after start of install & I could not see issue.

  Other issues
  I need to use 27" monitor as laptop screen small. I have to unplug monitor as mouse & Kubuntu icon are on monitor, but all the install info is on laptop. Unplugging then works, but difficult to see screen.

  I use grub2 loopmount with toram parameter to boot ISO.
  Trying to install to external NVMe drive which I tried several times before. Originally had 24.04 in that partition on drive.

  It finds lots of Wi-Fi connections, seem to switch to wrong one & then
  password not work. could not cancel password screen. Error then Locked
  up system and no reboot worked except power off.

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