[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Launchpad Bug Tracker]

This bug was fixed in the package appstream - 0.9.4-1ubuntu3

---
appstream (0.9.4-1ubuntu3) xenial; urgency=medium

  [ Carlo Vanini ]
  * modern-metadata-in-qt.patch: Fix type label for desktop
applications in the Qt library. (LP: #1663695)

  [ Matthias Klumpp ]
  * Fix autopkgtest tests.

 -- Matthias Klumpp   Fri, 31 Mar 2017 13:21:01 +0100

** Changed in: appstream (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Robie Basak]

So it looks like this was a regression caused by the fix for bug 1644498
landing in Xenial?

** Tags added: regression-update

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Anonymous]

I don't recall what I did last time but now I installed it again and it
works.

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

Okay, 3:1 for the "the update works" camp, as it looks like ;-)

** Tags removed: verification-needed
** Tags added: verification-done

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Mario Badr]

Muon did not work.

sudo apt install libappstreamqt1/xenial-proposed did work after
following the EnableProposed on Xenial 16.04.2.

Thanks!

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

** Tags removed: verification-failed
** Tags added: verification-needed

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Carlo Vanini]

It works for me updating libappstreamqt1 to 0.9.4-1ubuntu3 on Xenial
16.04.2.

Can someone else confirm, please?

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

@cicerone55: Are you sure you updated the right package? Please check if
libappstreamqt1 is at that particular version, because that's where the
bug is located.

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Anonymous]

Tested Xenial (0.9.4-1ubuntu3), didn't work.

** Tags removed: verification-needed
** Tags added: verification-failed

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Brian Murray]

Hello Damien, or anyone else affected,

Accepted appstream into xenial-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/appstream/0.9.4-1ubuntu3 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: appstream (Ubuntu Xenial)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

I added an explanation (basically, a previous bugfix fixing GNOME
Software broke this for the Qt bindings).

** Description changed:

  [Impact]
  
-  * A previous update made AppStream use modern-style component-ids, thereby 
breaking the Qt library if it is reading data from the cache and if that data 
happens to be a desktop-application.
-  * This leads to KDE's Discover not displaying applications.
+  * A previous update made AppStream use modern-style component-ids, thereby 
breaking the Qt library if it is reading data from the cache and if that data 
happens to be a desktop-application.
+  * This leads to KDE's Discover not displaying applications.
+  * The issue was introduced by a patch to the Xenial version of AppStream, 
and is not present in any other version of the package in Ubuntu, affecting 
Xenial only.
  
  [Test Case 1]
  
-  * Update the libappstream-qt package, run Discover: All apps should be
+  * Update the libappstream-qt package, run Discover: All apps should be
  loaded correctly.
  
  [Regression Potential]
  
-  * Low, this change affects only the Qt bindings and nothing else. The
+  * Low, this change affects only the Qt bindings and nothing else. The
  change is also a simple string value change.

** Changed in: appstream (Ubuntu Xenial)
   Status: Incomplete => In Progress

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Brian Murray]

Does this not need fixing in Zesty? If that is the case please explain
why not in the bug description.

** Changed in: appstream (Ubuntu Xenial)
   Status: In Progress => Incomplete

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Iain Lane]

** Changed in: appstream (Ubuntu Xenial)
   Status: Triaged => In Progress

** Changed in: appstream (Ubuntu Xenial)
 Assignee: (unassigned) => Matthias Klumpp (ximion)

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

** Description changed:

- Also reported at (https://github.com/hughsie/PackageKit/issues/177)
+ [Impact]
  
- I tried discover just after installing Kubuntu 16.04.1 LTS, and some software 
was being displayed, but search was not working. I tried to install muon, and 
did some software update (which seemed to work fine), and after that discover 
would not display any software at all. Updates still work. Muon works fine, 
except that search stops working after a while.
- There are display issues on top of that, but that is not the worst problem. 
Having the default software used for installing software on Kubuntu fail 
completely is a rather big issue...
- I tried uninstalling plasma-discover and muon, purging them, and reinstalling 
them, but that did not change anything. The current version is plasma-discover 
5.6.2.
+  * A previous update made AppStream use modern-style component-ids, thereby 
breaking the Qt library if it is reading data from the cache and if that data 
happens to be a desktop-application.
+  * This leads to KDE's Discover not displaying applications.
  
- Is there anything I can do to work around the bug ?
+ [Test Case 1]
  
- This is the output I get when starting it from the CLI:
+  * Update the libappstream-qt package, run Discover: All apps should be
+ loaded correctly.
  
- log_attica_plugin: Loaded paths from config: 
(QUrl("http://download.kde.org/ocs/providers.xml;))
- knewstuff: Initializing KNS3::Engine from ' "/etc/xdg/comic.knsrc" '
- knewstuff: Loading KNewStuff3 config:  "/etc/xdg/comic.knsrc"
- knewstuff: Categories:  ("Plasma Comic")
- knewstuff: Using registry file:  
"/home/damien/.local/share/knewstuff3/.knsregistry"
- knewstuff: Loading KNS2 registry of files for the component:  ""
- knewstuff: Cache read... entries:  0
- knewstuff: loading providers from  "http://download.kde.org/ocs/providers.xml;
- knewstuff: XmlLoader::load(): url:  
QUrl("http://download.kde.org/ocs/providers.xml;)
- log_attica_plugin: Loaded paths from config: 
(QUrl("http://download.kde.org/ocs/providers.xml;))
- knewstuff: Initializing KNS3::Engine from ' "/etc/xdg/plasmoids.knsrc" '
- knewstuff: Loading KNewStuff3 config:  "/etc/xdg/plasmoids.knsrc"
- knewstuff: Categories:  ("Plasma 5 Plasmoid")
- knewstuff: Loading KNS2 registry of files for the component:  ""
- knewstuff: Cache read... entries:  0
- knewstuff: loading providers from  "http://download.kde.org/ocs/providers.xml;
- knewstuff: XmlLoader::load(): url:  
QUrl("http://download.kde.org/ocs/providers.xml;)
- log_attica_plugin: Loaded paths from config: 
(QUrl("http://download.kde.org/ocs/providers.xml;))
- no providers for "/etc/xdg/comic.knsrc"
- invalid kns backend!
- no providers for "/etc/xdg/plasmoids.knsrc"
- invalid kns backend!
- knewstuff: XmlLoader::slotJobData()
- knewstuff: XmlLoader::slotJobData()
- knewstuff: --Xml Loader-START--
- knewstuff: "\n\napi.kde-look.org\n  
  https://api.kde-look.org/ocs/v1/\n
api.kde-look.org\n\n
https://api.kde-look.org/theme/flatui/img/new/O-standard-logo.png\n
\n
https://api.kde-look.org/content/terms\n
https://api.kde-look.org/register\n\n
\n\n\n\n\n"
- knewstuff: --Xml Loader-END--
- knewstuff: slotProvidersLoaded
- knewstuff: Provider attributes:  ""
- log_attica_plugin: No credentials found
- knewstuff: Engine addProvider called with provider with id  
"https://api.kde-look.org/ocs/v1/;
- knewstuff: XmlLoader::slotJobData()
- knewstuff: XmlLoader::slotJobData()
- knewstuff: --Xml Loader-START--
- knewstuff: "\n\napi.kde-look.org\n  
  https://api.kde-look.org/ocs/v1/\n
api.kde-look.org\n\n
https://api.kde-look.org/theme/flatui/img/new/O-standard-logo.png\n
\n
https://api.kde-look.org/content/terms\n
https://api.kde-look.org/register\n\n
\n\n\n\n\n"
- knewstuff: --Xml Loader-END--
- knewstuff: slotProvidersLoaded
- knewstuff: Provider attributes:  ""
- log_attica_plugin: No credentials found
- knewstuff: Engine addProvider called with provider with id  
"https://api.kde-look.org/ocs/v1/;
- knewstuff: providerInitialized "api.kde-look.org"
- knewstuff: providers loaded
- knewstuff: providerInitialized "api.kde-look.org"
- knewstuff: providers loaded
+ [Regression Potential]
  
- ProblemType: Bug
- DistroRelease: Ubuntu 16.04
- Package: plasma-discover 5.6.2-1ubuntu1.1
- ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
- Uname: Linux 4.4.0-62-generic x86_64
- NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
- ApportVersion: 2.20.1-0ubuntu2.5
- Architecture: amd64
- CurrentDesktop: KDE
- Date: Fri Feb 10 12:54:53 2017
- InstallationDate: Installed on 2017-02-09 (1 days ago)
- InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
- SourcePackage: plasma-discover
- UpgradeStatus: No upgrade log present (probably fresh 

[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Iain Lane]

** Also affects: packagekit (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: appstream (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: plasma-discover (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: appstream (Ubuntu)
   Status: Fix Committed => Fix Released

** Changed in: appstream (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: appstream (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: packagekit (Ubuntu Xenial)
   Status: New => Invalid

** Changed in: plasma-discover (Ubuntu Xenial)
   Status: New => Invalid

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

Added a version of this patch which also fixes the automatic tests.

** Patch added: "Fix for the bug and autopkgtests"
   
https://bugs.launchpad.net/ubuntu/+source/plasma-discover/+bug/1663695/+attachment/4850082/+files/lp1663695fix+tests.debdiff

** Changed in: appstream (Ubuntu)
   Status: New => Fix Committed

** Changed in: packagekit (Ubuntu)
   Status: Incomplete => Fix Released

** Changed in: packagekit (Ubuntu)
   Status: Fix Released => Invalid

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Ubuntu Foundations Team Bug Bot]

The attachment "change type string from "desktop" to "desktop-
application"" seems to be a debdiff.  The ubuntu-sponsors team has been
subscribed to the bug report so that they can review and hopefully
sponsor the debdiff.  If the attachment isn't a patch, please remove the
"patch" flag from the attachment, remove the "patch" tag, and if you are
member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issue please contact him.]

** Tags added: patch

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  Kubuntu 16.04.1 discover empty after fresh install

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Matthias Klumpp]

I just wanted to reject that assumption because the version of AppStream in 
Xenial was too old, but it turns out you're right: A backport from a newer 
version broke this, and I didn't notice because my AppStreamQt is also newer 
(and using a better architecture where this bug can't happen anymore).
So, +1 on the patch. I would probably when we are patching this, also add a few 
minor fixes to the autopkgtests in Xenial (I might do that tomorrow).

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[Bug 1663695] Re: Kubuntu 16.04.1 discover empty after fresh install

[Carlo Vanini]

All packages are marked as "technical" and therefore are hidden from the
list in Discover. That's because libAppstreamQt looks for type "desktop"
where instead it is "desktop-application" in the metadata.

** Patch added: "change type string from "desktop" to "desktop-application""
   
https://bugs.launchpad.net/ubuntu/+source/packagekit/+bug/1663695/+attachment/4848160/+files/appstream_0.9.4-1ubuntu3.debdiff

** Also affects: appstream (Ubuntu)
   Importance: Undecided
   Status: New

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