KDE- Ubiquity crashed when selecting WiFi network

[Leó Kolbeinsson]

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)

[Leó Kolbeinsson (leok)]

Attached is screenshot of the error message received during install.

[Ubuntu QA Website (ubuntuqa)]

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/1912327

[Leó Kolbeinsson (leok)]

I ran several further tests on the same ISO as in the original report.

This time on a different machine but also with UEFI+secure boot mode.

1. Installing from the"Install Kubuntu " button - fails when selecting WiFi network
2. rebooting and selecting "Try Kubuntu" and then installing from the desktop icon - again fails
3. rebooting and selecting "Try Kubuntu" and the selecting the WiFi connection BEFORE installing from the desktop icon - success.

My test reports are on the QA website : http://iso.qa.ubuntu.com/qatracker/milestones/419/builds/225657/testcases/1300/results

[Leó Kolbeinsson (leok)]

One final test (19012021) - this time with ethernet connection on the Acer Aspire E3 -111 machine-
no error encountered.

[Leó Kolbeinsson (leok)]

Testing Kubuntu Hirsute daily 20210213 -
http://cdimage.ubuntu.com/kubuntu/daily-live/20210213/hirsute-desktop-amd64.iso

Installing from the"Install Kubuntu " button - fails when selecting WiFi network as in original report.

My test reports on the QA website : http://iso.qa.ubuntu.com/qatracker/milestones/419/builds/226763/testcases/1300/results

[Launchpad Janitor (janitor)]

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

[Rik Mills (rikmills)]

From IRC:

[15:37]<mitya57> RikMills: looks like ssid should be converted from a QVariant to string before using it as a dictionary key.
[15:38]<mitya57> So something like "ssid = ssid.toString()" should fix it, but maybe similar changes are needed in other parts of the code.
[15:45]<RikMills> ssid = index.data(QtNetworkStore.SsidRole)
[15:46]<RikMills> that occurs in 2 definitions, so I guess yes
[15:46]<mitya57> Maybe just appending .toString() in both definitions will be enough

[Leó Kolbeinsson (leok)]

Testing Kubuntu Hirsute daily 20210409 -

Lenovo X230i i3-3120M,8GB,Intel HD graphics,WiFi,Ethernet,Bluetooth,320GB hd
Testcase:UEFI+secure boot - selected "Try Kubuntu" after entering desktop - connected the WiFi network - ran the installer and when I got to the network selection the installer crashed.

[Rik Mills (rikmills)]

This is a release blocker for Kubuntu 21.04

[Brian Murray (brian-murray)]

I was able to recreate this crash but had to be disconnected from the WiFi network so that the wireless page would appear in ubiquity-kde.

[Łukasz Zemczak (sil2100)]

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.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubiquity - 21.04.17

---------------
ubiquity (21.04.17) hirsute; urgency=medium

  [ Rik Mills ]
  * Remove autoconversion = False setting for qvariant in the KDE frontend.
    Fixes LP: #1912327 and LP: #1916331.

 -- Łukasz 'sil2100' Zemczak <email address hidden> Fri, 16 Apr 2021 16:25:59 +0200

[Darin Miller (darinmiller)]

Fix verified on Dell laptop.

Thanks!