Arch Linux

avg_joe

Member

Registered: 2016-08-18

Posts: 7

[Solved] QT apps fail on input

I'm running a vanilla Arch install with Openbox and Plasma, updated virtually every day from core, extra, community. I prefer Openbox and QT apps, but use some GTK apps (FF, TBird, hexchat).

Last night, I installed lumina-desktop from the Aur. Poked around a bit, used it for a while, logged out. Upon trying to log back in, aside from Openbox failing, going into Plasma resulted in most QT apps failing whenever I type anything. For example, kate, konsole, krusader - if I type anything, the app closes/fails. I've been looking for logfiles to try and get any indication of what's wrong, but finding the cause has been elusive.

I installed gnome-terminal and tried to launch konsole and hexchat (the one gtk app that fails):

[ 5219.523407] hexchat[2163]: segfault at 7fffb4f60ff8 ip 00007fb56f42fd25 sp 00007fffb4f61000 error 6 in libc-2.24.so[7fb56f3b7000+195000]
[ 5418.603388] konsole[2216]: segfault at 7ffc90fe0ff8 ip 00007fe076610d25 sp 00007ffc90fe1000 error 6 in libc-2.24.so[7fe076598000+195000]

kate:

kate when launched from terminal:
QObject::connect: invalid null parameter
QObject::connect: invalid null parameter
QObject::connect: Cannot connect (null)::returnPressed() to KUrlRequester::returnPressed()
QObject::connect: Cannot connect (null)::returnPressed(QString) to KUrlRequester::returnPressed(QString)
Segmentation fault (core dumped)

kate core dump in journalctl:

Aug 18 19:31:25 croozah kwin_x11[992]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 11713, resource id: 12582917, major code: 15 (QueryTree), minor code: 0
Aug 18 19:31:25 croozah plasmashell[1004]: file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:100: TypeError: Cannot read property of null
Aug 18 19:31:25 croozah plasmashell[1004]: QXcbConnection: XCB error: 2 (BadValue), sequence: 56658, resource id: 62919496, major code: 142 (Unknown), minor code: 3
Aug 18 19:31:25 croozah plasmashell[1004]: QXcbConnection: XCB error: 2 (BadValue), sequence: 56659, resource id: 62914566, major code: 142 (Unknown), minor code: 3
Aug 18 19:31:25 croozah systemd-coredump[2279]: Process 2274 (kate) of user 1000 dumped core.

I have completely wiped and reinstalled qt/qt5, plasma, sddm, xorg/xserver. I moved all config files to a backup directory, wiped all caches from my home directory and /var/cache, and reinstalled X, sddm, plasma, etc. allowing them to pull in qt following the wiki guides for a new install.

I can't find anything that indicates the root problem, and would prefer to use the tools to which I am accustomed. Any help would be appreciated; I am more than happy to provide more specifics.

Last edited by avg_joe (2016-08-19 01:00:31)

avg_joe

Member

Registered: 2016-08-18

Posts: 7

Re: [Solved] QT apps fail on input

Xorg.0.log pastebin: http://pastebin.com/6iwFeu6x

.xsession-errors pastebin: http://pastebin.com/x9X9BWrQ

BTW this is all x86_64, Lenovo IdeaPad, kernel 4.7.0.1-ARCH.

avg_joe

Member

Registered: 2016-08-18

Posts: 7

Re: [Solved] QT apps fail on input

Sigh, I created a new user and everything worked.

Strider

Member

From: Belgium

Registered: 2009-08-04

Posts: 104

Re: [Solved] QT apps fail on input

I have exactly the same problem since last night but I just cannot change my user.
Does anyone have a clue on how to solve this ?
I already looked in my config files but could not detect anything special.
If I login as another user that did not use lumina I have no problem at all. Seems lumina conflicts with glibc somewhere. I tried KDE plasma and xfce4 and both show the same problem.

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Win XP -> Ubuntu -> Fedora -> Arch -> Arch -> Arch -> Ar...

Strider

Member

From: Belgium

Registered: 2009-08-04

Posts: 104

Re: [Solved] QT apps fail on input

Solution can be found in this topic (a corrupt file in .icons/default in your home directory) :
https://bbs.archlinux.org/viewtopic.php?id=215758

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Win XP -> Ubuntu -> Fedora -> Arch -> Arch -> Arch -> Ar...