http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c1 Wolfgang Bauer changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 - Medium |P5 - None CC| |wbauer@tmo.at --- Comment #1 from Wolfgang Bauer --- Does it work if you uninstall qqc2-desktop-style? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c3 --- Comment #3 from Wolfgang Bauer --- (In reply to Frank Kruger from comment #2)

I can confirm the above-mentioned issue. Uninstalling qqc2-desktop-style does not solve it.

Ok, then I can only suggest trying to install discover 5.16.2 from KDE:Frameworks5 for now. Maybe it is fixed already? Otherwise an upstream bug report might be a good idea. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c5 --- Comment #5 from Wolfgang Bauer --- (In reply to Ms Hmm from comment #4)

Uninstalling Discover (and backend pacakages) and then replacing them with the 5.16.2 packages from the KDE:Frameworks5 repo gives this error on launch: file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:62: TypeError: Cannot read property 'selectedText' of null file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:70: TypeError: Cannot read property 'selectedText' of null file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:78: TypeError: Cannot read property 'canPaste' of null adding empty sources model QStandardItemModel(0x557a07e8b5d0) Segmentation fault (core dumped) Ok, the QML errors are the same as before, probably because you reinstalled qqc2-desktop-style, but that doesn't seem to be the reason for the crash anyway.

I've searched on Google for anyone else having similar problems, but the only ones I can find are from more than a year ago when Plasma 5.12 came out. Searching KDE forums and KDE bugs draws a blank, so at the moment I think it is openSUSe specific. That's not necessarily an indication for an openSUSE specific problem though, especially on Tumbleweed. Most distributions are not as up-to-date... ;-)

I'd still suggest filing an upstream bug report. This seems to be relevant though: Adding empty sources model QStandardItemModel(0x55e521fad920) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c7 --- Comment #7 from Wolfgang Bauer --- Well, the only change in 5.16.1 that seems relevant is this: https://cgit.kde.org/discover.git/commit/?id=67b313bdd6472e79e3d500f8b32d045... Can you please try discover from here that has this reverted? https://download.opensuse.org/repositories/home:/wolfi323:/boo1139463/openSU... -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c9 --- Comment #9 from Wolfgang Bauer --- Then I don't know, and it's probably caused by some other update. Appstream maybe? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 Frank Kruger changed: What |Removed |Added ---------------------------------------------------------------------------- URL| |https://bugs.kde.org/show_b | |ug.cgi?id=409195 -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 jay armstrong changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jay@jayarmstrong.com -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c12 Michael Pujos changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pujos.michael@gmail.com --- Comment #12 from Michael Pujos --- Still crashes here on 20190626 -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c14 --- Comment #14 from Michael Pujos --- (In reply to Frank Kruger from comment #13)

(In reply to Michael Pujos from comment #12)

...

Still crashes here on 20190626

For the sake of curiosity, could you please install or uninstall discover-backend-fwupd and then restart Discover?

Still crashing after uninstalling that package, and again after reinstalling it. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c15 Vitor Louro Valadares changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |vitorvlv@pm.me --- Comment #15 from Vitor Louro Valadares --- (In reply to Frank Kruger from comment #11)

FYI: With TW20190626 and after a reboot Discover is working again for me.

Fresh install of TW20190626, Discover still present the issue. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c17 --- Comment #17 from Ms Hmm --- (In reply to Vitor Louro Valadares from comment #16)

An update, now discover is launching for some reason. I can't see any apps and now it complains about Appstream.

Here is the terminal output:

file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:62: TypeError: Cannot read property 'selectedText' of null file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:70: TypeError: Cannot read property 'selectedText' of null file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/ MobileTextActionsToolBar.qml:78: TypeError: Cannot read property 'canPaste' of null invalid kns backend! "/usr/share/knsrcfiles/ksysguard.knsrc" because: "Config group not found! Check your KNS3 installation." adding empty sources model QStandardItemModel(0x55ef31dde230) Could not open the AppStream metadata pool "Some components have been ignored: Los archivos de metadatos tienen errores: /var/cache/app-info/xmls/download.opensuse.org-oss.xml.gz, /var/cache/app-info/xmls/download.opensuse.org-non-oss.xml.gz" no packages for "org.kde.okular-md" no packages for "org.kde.okular-ooo" no packages for "org.kde.plasma.quicklaunch" no packages for "org.kde.plasma.weather" no packages for "org.kde.plasma.systemmonitor.memory" no packages for "org.kde.desktopcontainment" no packages for "org.kde.plasma.networkmanagement" no packages for "org.kde.plasma.systemloadviewer" no packages for "org.kde.plasma.webbrowser" no packages for "org.kde.plasma.clipboard" no packages for "org.kde.okular-tiff" no packages for "org.kde.plasma.pager" no packages for "org.kde.okular-plucker" no packages for "org.kde.plasma.showActivityManager" no packages for "org.kde.plasma.notes" no packages for "org.kde.okular-dvi" no packages for "org.kde.okular-comicbook" no packages for "org.kde.plasma.trash" no packages for "org.kde.plasma.comic" no packages for "org.kde.plasma.windowlist" no packages for "org.kde.plasma.battery" no packages for "org.kde.hunyango" no packages for "org.kde.haenau" no packages for "org.kde.okular-poppler" no packages for "org.kde.plasma.lock_logout" no packages for "org.kde.plasma.keyboardindicator" no packages for "org.kde.paneltoolbox" no packages for "org.kde.plasma.printmanager" no packages for "org.kde.okular-xps" no packages for "org.kde.plasma.grouping" no packages for "org.kde.plasma.analogclock" no packages for "org.kde.plasma.folder" no packages for "org.kde.color" no packages for "org.kde.image" no packages for "org.kde.okular-epub" no packages for "org.kde.okular-fax" no packages for "org.kde.plasma.bluetooth" no packages for "org.kde.plasma.systemmonitor.diskusage" no packages for "org.kde.plasma.wacomtablet" no packages for "org.kde.plasma.showdesktop" no packages for "org.kde.okular-mobipocket" no packages for "org.kde.plasma.diskquota" no packages for "org.kde.plasma.systemtray" no packages for "org.kde.plasma.calendar" no packages for "org.gnome.cantarell" no packages for "org.kde.plasma.systemmonitor.diskactivity" no packages for "org.freedesktop.appstream.cli" no packages for "org.kde.breezedark.desktop" no packages for "org.kde.plasma.userswitcher" no packages for "org.kde.plasma.systemmonitor.net" no packages for "org.kde.plasma.desktop.emptyPanel" no packages for "org.kde.desktoptoolbox" no packages for "org.kde.okular-kimgio" no packages for "org.kde.plasma.fuzzyclock" no packages for "org.kde.plasma.kicker" no packages for "org.kde.plasma_applet_dict" no packages for "org.kde.plasma.activitypager" no packages for "org.kde.kio_audiocd" no packages for "org.kde.plasma.colorpicker" no packages for "org.kde.plasma.pkupdates" no packages for "org.kde.plasmashell" no packages for "org.kde.plasma.fifteenpuzzle" no packages for "org.kde.plasma.timer" no packages for "org.kde.kscreen" no packages for "org.kde.milou" no packages for "org.kde.plasma.mediacontroller" no packages for "org.kde.plasma.konsoleprofiles" no packages for "org.kde.discover.packagekit" no packages for "org.kde.breeze.desktop" no packages for "org.kde.plasma.quickshare" no packages for "org.kde.plasma.mediaframe" no packages for "org.kde.plasma.systemmonitor.cpu" no packages for "org.kde.plasma.katesessions" no packages for "org.kde.plasma.activitybar" no packages for "org.kde.potd" no packages for "org.kde.slideshow" no packages for "org.kde.plasma.icontasks" no packages for "org.kde.okular-fb" no packages for "org.kde.kinfocenter" no packages for "org.kde.plasma.taskmanager" no packages for "owncloud_kaccounts_ui" no packages for "org.kde.okular-chm" no packages for "org.kde.plasma.digitalclock" no packages for "org.kde.plasma.desktop.appmenubar" no packages for "org.kde.okular-txt" no packages for "org.kde.plasma.volume" no packages for "org.kde.plasma.desktop.defaultPanel" no packages for "org.kde.plasma.kickerdash" no packages for "org.kde.plasma.calculator" no packages for "org.kde.plasma.appmenu" no packages for "org.kde.plasma.notifications" no packages for "org.kde.plasma.devicenotifier" no packages for "org.kde.plasma.binaryclock" no packages for "org.kde.plasma.desktop" no packages for "org.kde.plasma.kimpanel" no packages for "org.kde.okular-djvu" no packages for "org.kde.wacomtablet" no packages for "org.kde.plasma.kickoff" no packages for "org.kde.plasma.minimizeall" empty appstream db qml: message: Por favor, asegúrese de que Appstream está bien configurado en su sistema. took really long to fetch PackageKitBackend(0x55ef31db0f70)

Same problem here on Discover 5.16.2-1.1 on openSUSE Tumbleweed 20190627. Discover now stays open on launch, but gives the message "Please make sure that Appstream is properly set up on your system". I get the same as Vitor Louro Valadares above when launching plasma-discover from Konsole. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c19 Ms Hmm changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Plasma Discover crashes on |Plasma Discover |launch since Tumbleweed |crashes/usuable on launch |20190623 |since Tumbleweed 20190623 --- Comment #19 from Ms Hmm --- (In reply to Frank Kruger from comment #18)

(In reply to Ms Hmm from comment #17)

...

Same problem here on Discover 5.16.2-1.1 on openSUSE Tumbleweed 20190627. Discover now stays open on launch, but gives the message "Please make sure that Appstream is properly set up on your system". I get the same as Vitor Louro Valadares above when launching plasma-discover from Konsole.

Agreed. You should maybe change the title, since it does not crash anymore.

I've amended it slightly as it's now merely unusable rather than crashing... -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c20 --- Comment #20 from Lutchy Horace --- Last I checked it still crash here relatively recently. When I get back on the machine again I'll double check and update this report accordingly. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c22 --- Comment #22 from Frank Kruger --- (In reply to Frank Kruger from comment #11)

FYI: With TW20190626 and after a reboot Discover is working again for me.

It seems that I was lucky for only two snapshots. After today's update to TW20190628 Discover crashes again with the known error messages (from the console): file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/MobileTextActionsToolBar.qml:70: TypeError: Cannot read property 'selectedText' of null file:///usr/lib64/qt5/qml/QtQuick/Controls.2/org.kde.desktop/private/MobileTextActionsToolBar.qml:78: TypeError: Cannot read property 'canPaste' of null adding empty sources model QStandardItemModel(0x555e2c744190) Segmentation fault (core dumped) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c24 --- Comment #24 from Wolfgang Bauer --- (In reply to kevin whitaker from comment #23)

Created attachment 808939 [details] plasma-discover gdb trace Hm, I cannot make much sense of that either, unfortunately. (that crash certainly is not in plasma-discover though)

There was a backtrace added to the upstream bug report too (https://bugs.kde.org/show_bug.cgi?id=409195), that was in AppStream or rather lmdb (the latest update does use lmdb). That really means that the trigger is the AppStream update as I suspected earlier. People who need to use discover currently can reinstall the previous AppStream/libappstream version that I provide here meanwhile: https://download.opensuse.org/repositories/home:/wolfi323:/boo1139463/openSU... A downgrade of AppStream is of course not the proper action here IMHO. I have no idea yet whether the bug is in AppStream or lmdb though... -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c26 --- Comment #26 from Rylee K --- (In reply to Wolfgang Bauer from comment #25)

Just for the record, I can reproduce the crash here now on Leap 15.1 with additional KDE repositories, after updating AppStream to 0.12.7, while it didn't crash before.

I didn't update it earlier because a vendor change was involved...

IOW, it works fine with the standard AppStream 0.12.6 (from the standard Leap 15.1 repos), but crashes with 0.12.7 (from KDE:Frameworks5, in my case).

I'm not too familiar with the appstream package. Will downgrading it possibly break anything else or cause any other issues? And is that the best course of action for someone on leap 15.1 to take for now until the issue is fixed? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c28 --- Comment #28 from Wolfgang Bauer --- PS: the critical part seems to be libappstream4, downgrading that makes discover start here (though I haven't tested the actual functionality). It's certainly a good idea to downgrade AppStream itself and libAppStreamQt2 too though. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c29 --- Comment #29 from Wolfgang Bauer --- (In reply to kevin whitaker from comment #23)

Created attachment 808939 [details] plasma-discover gdb trace

I ran plasma-discover with gdb and got a backtrace. (once I installed libappstream4 debug symbols) I only am sending the first 24 lines as if I let it show the whole backtrace, it goes on forever.(looping issue?) Indeed.

I did some investigation yesterday (had the same backtrace here). According to some debug output I added, AppStream apparently tried to add the same line over and over again in an endless loop, and eventually ran out of memory (resulting in the crash) I suppose. Also, setting LANG=C did avoid the crash. It doesn't crash anymore today here though for some reason... :-/ (I didn't install any updates) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c31 --- Comment #31 from Wolfgang Bauer --- Well, I deleted /var/cache/app-info/ here and ran "zypper appstream-cache refresh", and the crashes were back. So I should be able to investigate more (probably not today anymore though). Interestingly, I ran "zypper appstream-cache refresh" again afterwards, and the crash was gone again. And when I ran that again, discover crashed again afterwards, and deleting /var/cache/app-info/ "fixed" it again. So it seems something is flaky when actually creating the cache... Maybe the actual problem is in libzypp-plugin-appdata? (might be an incompatibility with the newer AppStream perhaps) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 Hans Loeblich changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |thehans@gmail.com -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 Ms Hmm changed: What |Removed |Added ---------------------------------------------------------------------------- CC|mshmm@gmx.com | -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c34 --- Comment #34 from Wolfgang Bauer --- I just found this upstream commit (in AppStream) that's supposed to fix an infinite loop (which seems to match the crash backtrace AFAICS): https://github.com/ximion/appstream/commit/8a7acbf81de51ff991bf8211eff248b46... Can somebody please test the new packages from here if they fix the crash? https://download.opensuse.org/repositories/home:/wolfi323:/boo1139463_crashf... Thanks. I probably won't be able to try myself until next week... -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1139463 http://bugzilla.opensuse.org/show_bug.cgi?id=1139463#c36 --- Comment #36 from Karl Ove Hufthammer --- (In reply to Wolfgang Bauer from comment #34)

I just found this upstream commit (in AppStream) that's supposed to fix an infinite loop (which seems to match the crash backtrace AFAICS): https://github.com/ximion/appstream/commit/ 8a7acbf81de51ff991bf8211eff248b46c2b5421

Can somebody please test the new packages from here if they fix the crash? https://download.opensuse.org/repositories/home:/wolfi323:/ boo1139463_crashfix/openSUSE_Tumbleweed/ Thanks.

Tested. When installing: Zypper shows this warning: ‘The AppStream system cache was updated, but some errors were detected, which might lead to missing metadata. Refer to the verbose log for more information.’ When running plasma-discover: Crashes at launch. After sudo rm -rf /var/cache/app-info/: Discover does *not* crash at launch. But it shows the message ‘Please check your connectivity’, the ‘Fetching updates…’ never ends, and all software categories are empty. -- You are receiving this mail because: You are on the CC list for the bug.