Ubuntu
plasma-discover package

[REGRESSION] Unable to view detailed app info on Lubuntu Lunar

Bug #2011380 reported by Aaron Rainbolt
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
plasma-discover (Ubuntu)
Fix Released
Critical
Rik Mills

Bug Description

Steps to reproduce:

1. Boot the latest Lubuntu Lunar ISO in a virtual machine.
2. Open Discover.
3. Click any application section in the left sidebar (the "Office" section is the one I'm using).
4. Click on any app.

Expected result: Detailed information about the app should be shown, such as pictures, a description, and reviews.

Actual result: Nothing happens.

Additional information: Here's the output I got from running Discover in a terminal and then clicking on apps:

-------------------------
org.kde.plasma.libdiscover: Couldn't find the backend: "kns-backend" among ("fwupd-backend", "kns-backend", "packagekit-backend", "snap-backend")
fetch ratings! false
adding empty sources model QStandardItemModel(0x561d756d77a0)
kf.kirigami: Failed to find a Kirigami platform plugin
qrc:/qml/Feedback.qml:2:1: module "org.kde.userfeedback" is not installed
no component found for "com.ubuntu.ubuntu"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed

QQmlComponent: Component is not ready
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/PageRow.qml:916: Error: Error while loading page: qrc:/qml/ApplicationPage.qml:15 module "org.kde.purpose" is not installed
-------------------------

The "QQmlComponent: Component is not ready" errors are the result of clicking on apps - each time I click on an app, one of those errors is printed to the terminal.

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: discover (not installed)
ProcVersionSignature: Ubuntu 6.1.0-16.16-generic 6.1.6
Uname: Linux 6.1.0-16-generic x86_64
ApportVersion: 2.26.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.480
CurrentDesktop: LXQt
Date: Mon Mar 13 04:49:26 2023
LiveMediaBuild: Lubuntu 23.04 "Lunar Lobster" - Alpha amd64 (20230312)
SourcePackage: discover
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Aaron Rainbolt (arraybolt3) wrote :
affects: discover (Ubuntu) → plasma-discover (Ubuntu)
Changed in plasma-discover (Ubuntu):
importance: Undecided → Critical
summary: - Unable to view detailed app info on Lubuntu Lunar
+ [REGRESSION] Unable to view detailed app info on Lubuntu Lunar
Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in plasma-discover (Ubuntu):
status: New → Confirmed
Revision history for this message
Leó Kolbeinsson (leok) wrote :

Confirmed - daily ISO Lubuntu Lunar 12-03-2023

Revision history for this message
Aaron Rainbolt (arraybolt3) wrote (last edit ):

I cannot reproduce this on Lubuntu Kinetic, either on the ISO directly, nor on an installed system after applying all updates. So this is a regression from Kinetic.

Revision history for this message
Aaron Rainbolt (arraybolt3) wrote :

Just tested on Kubuntu Lunar, and this bug does *not* exist there. So there's probably a package we're missing, in which case Discover may need its Depends updated.

Revision history for this message
Aaron Rainbolt (arraybolt3) wrote :

OK, so I found the problem.

plasma-discover requires qml-module-org-kde-purpose to be installed. Installing that package restores functionality. And running "apt-cache show plasma-discover | grep qml-module-org-kde-purpose" reveals that qml-module-org-kde-purpose is not listed as a Depends or even a Recommends of plasma-discover.

However, qml-module-org-kde-purpose has kdeconnect as a recommends for reasons I do not understand, which means that installing qml-module-org-kde-purpose will usually pull in kdeconnect, and seeding or depending on qml-module-org-kde-purpose will also result in kdeconnect being pulled in by default.

The ideal solution for Lubuntu would be for kdeconnect to be demoted to a Suggests of qml-module-org-kde-purpose (or removed entirely, I can't see any reason it would be related?), and for qml-module-org-kde-purpose to be added as a Depends of plasma-discover. That would fix everything.

Rik Mills (rikmills)
Changed in plasma-discover (Ubuntu):
assignee: nobody → Rik Mills (rikmills)
status: Confirmed → In Progress
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package plasma-discover - 5.27.2-0ubuntu3

---------------
plasma-discover (5.27.2-0ubuntu3) lunar; urgency=medium

  * Add missing runtime depend on qml-module-org-kde-purpose. (LP:
    #2011380)

 -- Rik Mills <email address hidden> Mon, 13 Mar 2023 12:16:54 +0000

Changed in plasma-discover (Ubuntu):
status: Fix Committed → Fix Released
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