Texstudio: ubuntu 18.04 Segmentation fault (core dumped)

[vkmaheshbhat]

In ubuntu 18.04, when I start Texstudio 2.12.8, I get "Segmentation fault (core dumped)".
(Moved here from : https://sourceforge.net/p/texstudio/bugs/2375/)

Environment

• TeXstudio: 2.12.8
• Qt: 5.9.5
• OS: Linux, Ubuntu 18.04
• TeX distribution: texlive

Expected behavior

TexStudio starts

Actual behavior

Segmentation fault (core dumped)

How to reproduce

Start TexStudio.

_usr_bin_texstudio.1000.crash.zip

[sunderme]

where is the .deb coming from ?
please provide the backtrace from /tmp/texstudio...

[vkmaheshbhat]

I installed from the Ubuntu software center.

The only file I could find in /tmp was:
$ ls -l /tmp/ | grep TeX
srwxr-xr-x 1 mahesh mahesh 0 Mai 29 12:27 qtsingleapp-TeXstu-cdc4-3e8
-rw-r--r-- 1 mahesh mahesh 0 Mai 25 21:39 qtsingleapp-TeXstu-cdc4-3e8-lockfile

As you can see they are 0 bytes.

[sunderme]

18.04 LTS offers texstudio 2.12.6.
So, where is texstudio 2.12.8 coming from ?

[Ekkehardt]

Same error here. Ubuntu 18.04 LTS, fresh install, TeXstudio 2.12.6, TeX Live 2018.

[vkmaheshbhat]

2.12.8 is the version in the crash file I attached on another computer. This is the same file from the original thread on sourceforge. On the computer I reported here, I have 2.12.6, with the same issue. Now I tried installing from this and have the same problem, with 0 byte trace file.

Sorry for the confusion. It resulted from my wishing to move the issue from sourceforge to here, I guess I did mixed it all up a bit.

[benibela]

You could run it with gdb texstudio and then type backtrace when it crashes and show us the output

apport-retrace should give us a backtrace from the file you uploaded, but I do not have an active Ubuntu to run that here

[vkmaheshbhat]

OK. Here is the backtrace from gdb:

$ gdb texstudio 
GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from texstudio...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/texstudio 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe8e00700 (LWP 13155)]
[New Thread 0x7fffde64b700 (LWP 13156)]
[New Thread 0x7fffdde4a700 (LWP 13157)]
[New Thread 0x7fffdd649700 (LWP 13158)]
[New Thread 0x7fffcf58f700 (LWP 13159)]

Thread 1 "texstudio" received signal SIGSEGV, Segmentation fault.
0x0000555555870cd7 in ManhattanStyle::event(QEvent*) ()
(gdb) bt
#0  0x0000555555870cd7 in ManhattanStyle::event(QEvent*) ()
#1  0x00007ffff660082c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#2  0x00007ffff66080f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#3  0x00007ffff4e249a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff4e5b658 in QObject::setProperty(char const*, QVariant const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x0000555555872307 in ManhattanStyle::ManhattanStyle(QString const&) ()
#6  0x00005555557afa80 in ConfigManager::setInterfaceStyle() ()
#7  0x00005555557d13ce in ConfigManager::readSettings(bool) ()
#8  0x000055555570541f in Texstudio::readSettings(bool) ()
#9  0x0000555555706d3f in Texstudio::Texstudio(QWidget*, QFlags<Qt::WindowType>, QSplashScreen*) ()
#10 0x00005555556a4ea5 in TexstudioApp::init(QStringList&) ()
#11 0x000055555569f273 in main ()
(gdb)

[sunderme]

you could remove/rename .config/texstudio/texstudio.ini and see what happens.
What is the window manager ?

[vkmaheshbhat]

$ wmctrl -m
Name: Compiz
Class: N/A
PID: N/A
Window manager's "showing the desktop" mode: OFF

Removing the .config/texstudio/texstudio.ini solved the problem for me. Texstudio launches and functions correctly now!

[Ekkehardt]

I can confirm removing the ini file solves the problem.

[gpetrini]

It solved my problem too. Thanks a lot

[deartonym]

Soved the pain in my ass thanks

[timhoffm]

@sunderme @benibela Do we know which Part of the ini causes the trouble. While deleting is workaround, this appears to be a common problem and I‘d rather catch it if possible.

[timhoffm]

If someone encounters this problem in the future, can you please provide your texstudio so that we can track down the issue?

[sebawild]

I ran into the same issue, using texstudio 2.12.14 from the Ubuntu ppa.
Here is my texstudio.ini; deleting it avoids the segfault.

[General]
IniMode=true

[formats]
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[texmaker]
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[version]
created_by_TXS_hg_revision=4323:cf7f5964517f
created_by_TXS_version=2.7.0
written_by_TXS_hg_revision=6475:fe21cf14c0b4
written_by_TXS_version=2.12.4

[sebawild]

I was able to manually merge (default) new texstudio.ini and large parts of my old one;
macros and recently-opened-files lists did not work that way, so I suspect the crash could be related to that.