[Bug 1912327] Re: KDE- Ubiquity crashed when selecting WiFi network

[Łukasz Zemczak]

Okay, looking at the bug and Brian's confirmation, with my release hat
on this feels less and less like a blocker. I'll leave it for Kubuntu to
decide for their flavor, but since this only happens on the live session
and has a very easy workaround that we can document in the release notes
- I think that it's not ideal but worst case we could just release-note
it.

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Title:
  KDE- Ubiquity crashed when selecting WiFi network

Status in ubiquity package in Ubuntu:
  Confirmed
Status in ubiquity source package in Hirsute:
  Confirmed

Bug description:
  Installing ISO daily 20210119 Kubuntu Hirsute on Lenovo V14 IIL
  running in UEFI + secure boot mode.

  Ubiquity crashed when selecting WiFi network during the install. The
  error message Installer crashed appeared when I attempted to select
  the WiFi network.

  Booted up the image and clicked on the "Install Kubuntu" button.

  The installer started as normal - I then selected the correct keyboard
  layout and progressed onto the Wireless screen- selected connect to
  this network - and selected my wireless and the installer crashed with
  the failure message.

  I will upload screenshot via another computer after filing this bug.

  WORKAROUND:

  - At boot select the option to 'Try' Kubuntu and progress to the full live desktop session.
  - Use the network management system tray applet to connect to wifi.
  - Start the installer via the desktop icon or main menu entry.

  Crash details:

  Exception in KDE frontend (invoking crash handler):
  Traceback (most recent call last):
    File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", line 452, in _on_current_changed
      passphrase = self.view.get_cached_passphrase()
    File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", line 289, in get_cached_passphrase
      return self.wifi_model.passphrases_cache.get(ssid, '')
  TypeError: unhashable type: 'QVariant'

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: ubiquity 21.04.4
  ProcVersionSignature: Ubuntu 5.8.0-36.40+21.04.1-generic 5.8.18
  Uname: Linux 5.8.0-36-generic x86_64
  ApportVersion: 2.20.11-0ubuntu55
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.456
  CurrentDesktop: KDE
  Date: Tue Jan 19 10:46:34 2021
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Kubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210119)
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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