Canonical System Image

System settings app crashes when doing the second checking for updates

Bug #1617217 reported by Evan Wang
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Fix Released
Critical
Bill Filler
Canonical System Image 13 "OTA13"
ubuntu-system-settings (Ubuntu)
Fix Released
Critical
Jonas G. Drange

Bug Description

$ system-image-cli -i
current build number: 166
device name: turbo
channel: ubuntu-touch/rc-proposed/meizu-pd.en
last update: 2016-08-26 00:46:47
version version: 166
version ubuntu: 20160826
version device: 20160812-8b46c21
version custom: 20160805-985-8-9

Steps to reproduces:
1. Ubuntu One account signed in
2. Press option of 'Check for updates' from System Settings-->About-->Check for updates
3. Waiting for the updates checking is done, but do nothing then back to About page instead
4. Press 'Check for updates' again

Actual results:
System Settings crashed, quit directly.

Related branches

lp://qastaging/~jonas-drange/ubuntu-system-settings/lp1617217
system-apps-ci-bot: Needs Fixing (continuous-integration)
Ken VanDine: Approve
Diff: 37 lines (+13/-3)
2 files modified
plugins/about/PageComponent.qml (+3/-1)
plugins/battery/PageComponent.qml (+10/-2)
Revision history for this message
Evan Wang (wsy324) wrote :
Pat McGowan (pat-mcgowan)
Changed in canonical-devices-system-image:
assignee: nobody → Bill Filler (bfiller)
importance: Undecided → High
milestone: none → 13
status: New → Confirmed
Changed in ubuntu-system-settings (Ubuntu):
assignee: nobody → Jonas G. Drange (jonas-drange)
status: New → Confirmed
tags: added: regression-proposed
Bill Filler (bfiller)
Changed in ubuntu-system-settings (Ubuntu):
importance: Undecided → High
Revision history for this message
Bill Filler (bfiller) wrote :

are there any crash files in /var/crash from system-settings, system-image-dbus or ubuntu-download-manager?

Revision history for this message
Jonas G. Drange (jonas-drange) wrote :

Got a trace here: http://pastebin.ubuntu.com/23113481/

Jonas G. Drange (jonas-drange)
Changed in ubuntu-system-settings (Ubuntu):
status: Confirmed → In Progress
Revision history for this message
Bill Filler (bfiller) wrote :

confirmed, can crash it everytime

Changed in ubuntu-system-settings (Ubuntu):
importance: High → Critical
Changed in canonical-devices-system-image:
importance: High → Critical
Revision history for this message
Jonas G. Drange (jonas-drange) wrote :

One theory is that the plugin manager is not doing the right thing here, because if you, after step 3 exit the About panel, then enter it, then perform step 4—you get a warning from the plugin manager that “system-update” can't be found. The other theory is that the system-update plugin isn't cleaning up properly, which is unlikely because the bug cannot be triggered without going via the About panel.

Will confirm one or the other by changing the plugin instantiated by About with something closer to pure-qml, e.g. Hotspot—or create a brand new, empty one.

Revision history for this message
Jonas G. Drange (jonas-drange) wrote : Re: [Bug 1617217] Re: System settings app crashes when doing the second checking for updates

It crashes (albeit not as quickly) using the hotspot page, so this is
unrelated to System Update. It looks like a race in the plugin-manager.

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-system-settings - 0.4+16.10.20160831.1-0ubuntu1

---------------
ubuntu-system-settings (0.4+16.10.20160831.1-0ubuntu1) yakkety; urgency=medium

  [ jonas-drange ]
  * fixes two crashes in About -> Check for update and Battery ->
    Brightness (LP: #1617217)

 -- Ken VanDine <email address hidden> Wed, 31 Aug 2016 15:19:48 +0000

Changed in ubuntu-system-settings (Ubuntu):
status: In Progress → Fix Released
Jean-Baptiste Lallement (jibel)
Changed in canonical-devices-system-image:
status: Confirmed → Fix Committed
Pat McGowan (pat-mcgowan)
Changed in canonical-devices-system-image:
status: Fix Committed → Fix Released
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