Ubuntu
ubuntu-ui-toolkit-gles package

Scopes and System Settings (all my QML apps) show just blank white windows [missing package qml-module-ubuntu-performancemetrics]

Bug #1577639 reported by Daniel van Vugt
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
ubuntu-ui-toolkit (Ubuntu)
Confirmed
High
Unassigned
ubuntu-ui-toolkit-gles (Ubuntu)
Confirmed
High
Unassigned
unity8 (Ubuntu)
Invalid
High
Unassigned

Bug Description

Scopes and System Settings (all my QML apps) show just blank white windows. However the web-browser and Mir demos render correctly.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity8 8.12+16.04.20160401-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Tue May 3 12:05:54 2016
InstallationDate: Installed on 2015-12-03 (151 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151202)
SourcePackage: unity8
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Daniel van Vugt (vanvugt) wrote :
Changed in unity8 (Ubuntu):
importance: Undecided → High
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

This is still a problem in: ppa:ci-train-ppa-service/stable-phone-overlay

Unity8 version 8.12+16.04.20160504.2-0ubuntu1

Revision history for this message
Michał Sawicz (saviq) wrote :

I believe you've gotten it working?

Changed in unity8 (Ubuntu):
status: New → Incomplete
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

No, I got Unity8 working with non-QML apps only.

Working: Web browser, Xmir, GTK apps
Not working: System Settings and Scopes

Changed in unity8 (Ubuntu):
status: Incomplete → New
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Found the problem. Had any of us looked at unity8-dash.log (attached) we would have seen it.

The problem is that MainView uses Ubuntu.PerformanceMetrics but that package is never installed.

Solution: sudo apt install qml-module-ubuntu-performancemetrics

So the bug is just Unity8 missing a hard dependency on that package which it requires.

Changed in unity8 (Ubuntu):
status: New → Triaged
Daniel van Vugt (vanvugt)
Changed in ubuntu-ui-toolkit-gles (Ubuntu):
importance: Undecided → High
Changed in unity8 (Ubuntu):
status: Triaged → New
Changed in ubuntu-ui-toolkit (Ubuntu):
importance: Undecided → High
summary: Scopes and System Settings (all my QML apps) show just blank white
- windows
+ windows [missing package qml-module-ubuntu-performancemetrics]
Michał Sawicz (saviq)
Changed in unity8 (Ubuntu):
status: New → Invalid
summary: - Scopes and System Settings (all my QML apps) show just blank white
- windows [missing package qml-module-ubuntu-performancemetrics]
+ MainView should depend on qml-module-ubuntu-performancemetrics
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Please keep the title meaningful to users who encounter the bug.

summary: - MainView should depend on qml-module-ubuntu-performancemetrics
+ Scopes and System Settings (all my QML apps) show just blank white
+ windows [missing package qml-module-ubuntu-performancemetrics]
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Once you've worked around this bug, you'll encounter bug 1579551 next. See that one for the next workaround.

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

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

Changed in ubuntu-ui-toolkit (Ubuntu):
status: New → Confirmed
Changed in ubuntu-ui-toolkit-gles (Ubuntu):
status: New → Confirmed
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