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#1 2020-03-09 12:10:38
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
QT Applications no longer open. Segmentation fault (core dumped)
Hi. Some days ago I did a huge update on my system. I thought everything was ok but when I tried to open Dolphin (or any other qt application), it gives me this output:
qt5ct: using qt5ct plugin
Segmentation fault (core dumped)
Any ideas about what could it be? Thanks in advance.
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#2 2020-03-10 10:12:03
- xerxes_
- Member
- Registered: 2018-04-29
- Posts: 815
Re: QT Applications no longer open. Segmentation fault (core dumped)
Output of coredumpctl and journalctl in [ code ] tags please? What DE do you use?
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#3 2020-03-10 16:19:17
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
I use i3.
journalctl:
Mar 10 12:10:00 dell-n5110 systemd[1]: Started Process Core Dump (PID 19923/UID 0).
Mar 10 12:10:00 dell-n5110 systemd-coredump[19924]: Process 19919 (dolphin) of user 1000 dumped core.
Stack trace of thread 19919:
#0 0x00007f773e6da57c __tzfile_read (libc.so.6 + 0xbd57c)
#1 0x00007f773e6da12d tzset_internal (libc.so.6 + 0xbd12d)
#2 0x00007f773e6da23a tzset (libc.so.6 + 0xbd23a)
#3 0x00007f773e6d8f6d mktime (libc.so.6 + 0xbbf6d)
#4 0x00007f773c36fb70 _Z7qMkTimeP2tm (libQt5Core.so.5 + 0xc0b70)
#5 0x00007f773c44681e n/a (libQt5Core.so.5 + 0x19781e)
#6 0x00007f773c446eb8 n/a (libQt5Core.so.5 + 0x197eb8)
#7 0x00007f773c446fc6 n/a (libQt5Core.so.5 + 0x197fc6)
#8 0x00007f773c447460 n/a (libQt5Core.so.5 + 0x198460)
#9 0x00007f773c44954e _ZN9QDateTime18setMSecsSinceEpochEx (libQt5Core.so.5 + 0x19a54e)
#10 0x00007f773c44af71 _ZN9QDateTime19fromMSecsSinceEpochExN2Qt8TimeSpecEi (libQt5Core.so.5 + 0x19bf71)
#11 0x00007f773c44b683 _ZN9QDateTime19fromMSecsSinceEpochEx (libQt5Core.so.5 + 0x19c683)
#12 0x00007f773c48b54c _ZNK9QFileInfo8fileTimeEN11QFileDevice8FileTimeE (libQt5Core.so.5 + 0x1dc54c)
#13 0x00007f773c48b704 _ZNK9QFileInfo12lastModifiedEv (libQt5Core.so.5 + 0x1dc704)
#14 0x00007f773c4e67cc n/a (libQt5Core.so.5 + 0x2377cc)
#15 0x00007f773c4e68dc n/a (libQt5Core.so.5 + 0x2378dc)
#16 0x00007f773c4e749d n/a (libQt5Core.so.5 + 0x23849d)
#17 0x00007f773c4e7560 _ZN9QSettingsC2ERK7QStringNS_6FormatEP7QObject (libQt5Core.so.5 + 0x238560)
#18 0x00007f773506b691 _ZN16Qt5CTStylePlugin6createERK7QString (libqt5ct-style.so + 0x4691)
#19 0x00007f773d15c6ae _ZN13QStyleFactory6createERK7QString (libQt5Widgets.so.5 + 0x1d26ae)
#20 0x00007f773d183b45 n/a (libQt5Widgets.so.5 + 0x1f9b45)
#21 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#22 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#23 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#24 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#25 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#26 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#27 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#28 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#29 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#30 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#31 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#32 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#33 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#34 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#35 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#36 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#37 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#38 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#39 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#40 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#41 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#42 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#43 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#44 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#45 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#46 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#47 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#48 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#49 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#50 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#51 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#52 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#53 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#54 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#55 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#56 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#57 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
#58 0x00007f773d0e63c2 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c3c2)
#59 0x00007f773d0ef599 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x165599)
#60 0x00007f773c55b1fa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2ac1fa)
#61 0x00007f773c58fb59 _ZN14QObjectPrivate16setParent_helperEP7QObject (libQt5Core.so.5 + 0x2e0b59)
#62 0x00007f773d183945 n/a (libQt5Widgets.so.5 + 0x1f9945)
#63 0x00007f773d184535 _ZN11QProxyStyle5eventEP6QEvent (libQt5Widgets.so.5 + 0x1fa535)
Stack trace of thread 19920:
#0 0x00007f773e711abf __poll (libc.so.6 + 0xf4abf)
#1 0x00007f773ad4463b n/a (libxcb.so.1 + 0xc63b)
#2 0x00007f773ad4637b xcb_wait_for_event (libxcb.so.1 + 0xe37b)
#3 0x00007f7736c43f11 n/a (libQt5XcbQpa.so.5 + 0x65f11)
#4 0x00007f773c37be96 n/a (libQt5Core.so.5 + 0xcce96)
#5 0x00007f773ad8746f start_thread (libpthread.so.0 + 0x946f)
#6 0x00007f773e71c3d3 __clone (libc.so.6 + 0xff3d3)
Stack trace of thread 19921:
#0 0x00007f773e711abf __poll (libc.so.6 + 0xf4abf)
#1 0x00007f773a1107a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2 0x00007f773a110871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3 0x00007f773c5b5270 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x306270)
#4 0x00007f773c559dbc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2aadbc)
#5 0x00007f773c37ad02 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcbd02)
#6 0x00007f773c80cb38 n/a (libQt5DBus.so.5 + 0x15b38)
#7 0x00007f773c37be96 n/a (libQt5Core.so.5 + 0xcce96)
#8 0x00007f773ad8746f start_thread (libpthread.so.0 + 0x946f)
#9 0x00007f773e71c3d3 __clone (libc.so.6 + 0xff3d3)
Mar 10 12:10:01 dell-n5110 kernel: audit: type=1131 audit(1583856600.987:134): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-coredump@6-19923-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' coredumpctl:
TIME PID UID GID SIG COREFILE EXE
Tue 2020-03-10 12:10:00 -04 19919 1000 1000 11 present /usr/bin/dolphin Offline
#4 2020-03-10 16:31:50
- arojas
- Developer
- From: Spain
- Registered: 2011-10-09
- Posts: 2,154
Re: QT Applications no longer open. Segmentation fault (core dumped)
output of 'locale' and 'timedatectl'?
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#5 2020-03-10 17:22:37
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
locale:
locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=timedatectl:
timedatectl
Local time: Tue 2020-03-10 12:43:46 -04
Universal time: Tue 2020-03-10 16:43:46 UTC
RTC time: Tue 2020-03-10 16:43:46
Time zone: America/Caracas (-04, -0400)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no Offline
#6 2020-03-11 07:16:26
- arojas
- Developer
- From: Spain
- Registered: 2011-10-09
- Posts: 2,154
Re: QT Applications no longer open. Segmentation fault (core dumped)
That looks OK. We're going to need a backtrace with debug symbols to go any further.
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#7 2020-03-11 19:27:07
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
That looks OK. We're going to need a backtrace with debug symbols to go any further.
This?
(gdb) run dolphin
Starting program: /usr/bin/dolphin dolphin
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffef93c700 (LWP 27027)]
qt5ct: using qt5ct plugin
[New Thread 0x7fffeef0a700 (LWP 27028)]
Thread 1 "dolphin" received signal SIGSEGV, Segmentation fault.
0x00007ffff7d6a4c5 in __tzfile_read () from /usr/lib/libc.so.6 Offline
#8 2020-03-16 20:09:41
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
Any ideas? I still haven't found a solution...
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#9 2020-03-16 20:09:41
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
Maybe the qt5ct package is kinda buggy? I use the repo test.
Last edited by Dan14 (2020-03-16 20:11:00)
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#10 2020-03-16 21:00:42
- xerxes_
- Member
- Registered: 2018-04-29
- Posts: 815
Re: QT Applications no longer open. Segmentation fault (core dumped)
You can reinstall qt5ct package and update system both at once by command 'pacman -Syu qt5ct' and see if that resolve your problem.
If that don't help, print here 'set | less' or search in that output if you have such environment variables set and to what values: QT_STYLE_OVERRIDE, QT_SELECT, QT_QPA_PLATFORMTHEME or other QT variables (beware they are case sensitive).
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#11 2020-03-16 21:26:29
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
You can reinstall qt5ct package and update system both at once by command 'pacman -Syu qt5ct' and see if that resolve your problem.
If that don't help, print here 'set | less' or search in that output if you have such environment variables set and to what values: QT_STYLE_OVERRIDE, QT_SELECT, QT_QPA_PLATFORMTHEME or other QT variables (beware they are case sensitive).
The only thing that appears is this: QT_QPA_PLATFORMTHEME=qt5ct
By reinstalling qt5ct package doesn't do anything. However if I uninstall it, Dolphin opens successfully but with the gtk theme (I think).
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#12 2020-03-16 22:13:48
- WorMzy
- Administrator
- From: Scotland
- Registered: 2010-06-16
- Posts: 12,464
- Website
Re: QT Applications no longer open. Segmentation fault (core dumped)
I use the repo test.
Please include that sort of information up front: https://wiki.archlinux.org/index.php/Of … positories
Mod note: Moving to testing.
Sakura:-
Mobo: MSI MAG X570S TORPEDO MAX // Processor: AMD Ryzen 9 5950X @4.9GHz // GFX: AMD Radeon RX 5700 XT // RAM: 32GB (4x 8GB) Corsair DDR4 (@ 3000MHz) // Storage: 1x 3TB HDD, 6x 1TB SSD, 2x 120GB SSD, 1x 275GB M2 SSD
Making lemonade from lemons since 2015.
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#13 2020-03-17 10:50:27
- xerxes_
- Member
- Registered: 2018-04-29
- Posts: 815
Re: QT Applications no longer open. Segmentation fault (core dumped)
You may read this thread with sublinks. Maybe you will figure out solution for yourself.
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#14 2020-03-27 05:10:33
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
You may read this thread with sublinks. Maybe you will figure out solution for yourself.
Thanks, I had already configured the environment variable as QT_QPA_PLATFORMTHEME=qt5ct, before this problem, but that hasn't fixed the problem 
. I found out something though, there's a qt5ct.conf located in
~.config/qt5ct/qt5ct.conf , which has the following configuration:
[Appearance]
color_scheme_path=/home/dany/.config/qt5ct/colors/test.conf
custom_palette=false
icon_theme=Papirus-Dark
style=gtk2If I change the ''style'' to gtk3, as in: style=gtk3, Dolphin does open, but with a weird style. But if I leave it with the gtk2, I still get the ''segmentation fault''. Any clues of what this could be?
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#15 2020-03-27 15:45:18
- xerxes_
- Member
- Registered: 2018-04-29
- Posts: 815
Re: QT Applications no longer open. Segmentation fault (core dumped)
In the above thread that I point you I was trying to switch from gtk2 (or I even have gtk without number?) to qt5ct and I was able to display all possible styles that I could switch in terminal, but I forgot how I was doing that (there was a lot of styles, don't remember whether all worked). Did you look into the links posted in that thread?
Now part of my qt5ct.conf you mentioned looks like this:
[Appearance]
color_scheme_path=/usr/share/qt5ct/colors/airy.conf
custom_palette=false
icon_theme=Numix-Square
standard_dialogs=default
style=FusionOffline
#16 2020-03-27 17:47:40
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
In the above thread that I point you I was trying to switch from gtk2 (or I even have gtk without number?) to qt5ct and I was able to display all possible styles that I could switch in terminal, but I forgot how I was doing that (there was a lot of styles, don't remember whether all worked). Did you look into the links posted in that thread?
Now part of my qt5ct.conf you mentioned looks like this:
[Appearance] color_scheme_path=/usr/share/qt5ct/colors/airy.conf custom_palette=false icon_theme=Numix-Square standard_dialogs=default style=Fusion
Yeah, I looked at the links posted on those threads. I figured something out when you send me your configuration. Apparently the style I had in ''gtk2'' it's like it doesn't have any theme set (or something like that). I ran qt5ct on the terminal, and I changed the style to ''kvantum-dark'' (which of course overwrote the qt5ct file to kvantum-dark). Now, something strange happened. when I did that, Transmission-qt had kvantum-dark. But Dolphin and Kate had another theme called ''Arc-Dark''. How can I look at the configuration files separately of each apps and see which themes are they taking?
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#17 2020-03-27 21:30:22
- xerxes_
- Member
- Registered: 2018-04-29
- Posts: 815
Re: QT Applications no longer open. Segmentation fault (core dumped)
I don't have this progs installed, so I can't tell you whether they create config files or what can you find in them, but you may look in directly in your home dir like:
/home/dany/.kate
/home/dany/.config/kate
/home/dany/.cache/kate
/home/dany/.local/share/kateetc. same for dolphin.
Also maybe something interesting you could find in 'man kate', 'man dolphin' and in 'pacman -Ql kate/dolphin | less' search for: config, docbook, kcfg, and other things what look interesting.
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#18 2020-03-28 05:18:27
- Dan14
- Member
- Registered: 2015-11-06
- Posts: 25
Re: QT Applications no longer open. Segmentation fault (core dumped)
I don't have this progs installed, so I can't tell you whether they create config files or what can you find in them, but you may look in directly in your home dir like:
/home/dany/.kate /home/dany/.config/kate /home/dany/.cache/kate /home/dany/.local/share/kateetc. same for dolphin.
Also maybe something interesting you could find in 'man kate', 'man dolphin' and in 'pacman -Ql kate/dolphin | less' search for: config, docbook, kcfg, and other things what look interesting.
Thanks, I just tried that. I went for every file, but unfortunately couldn't find anything regarding the theme. It's really weird, I realized that every qt applications it does have the kvantum-dark. But only Kate and Dolphin have the ''Arc-Dark''.
I'll leave this image to show the difference between the programs. I opened Ksysguard to show the difference: https://imgur.com/a/1HAw0eN
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#19 2020-06-07 18:52:02
- Sturmgewehr
- Member
- Registered: 2012-06-12
- Posts: 5
Re: QT Applications no longer open. Segmentation fault (core dumped)
It's easier to delete the config and reset the appearance (graphical) settings:
https://bbs.archlinux.org/viewtopic.php?pid=1908917
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