LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 12-18-2018, 01:09 PM   #1
IronManRust
LQ Newbie
 
Registered: Aug 2014
Location: Chicago, IL, USA
Distribution: Arch
Posts: 4

Rep: Reputation: Disabled
Qt5 Programs (VLC / qv4l2 / notepadqq / etc) SegFault


As an FYI, this is a cross-post from https://bbs.archlinux.org/viewtopic.php?id=242703 ...

Basic system setup:
  • Arch
  • Core2 Duo
  • 2x GeForce GT 620's Running nvidia-390xx Driver
  • Xfce
  • 4.19.8-arch1-1-ARCH

Did a full system update (pacman -Syu) in the last week or two, first time in a while, seemed to go fine. Fired up vlc's UI for the first time today since then, nothing happened. Dropped to a terminal to troubleshoot ...

Code:
cvlc test.mp3
... audio plays. So we're not totally dead. Let's see if we can get a GUI ...

Code:
vlc test.mp3
... well hello segmentation fault and core dump. Checking details ...

Code:
vlc -vvv test.mp3
... lots of details, none useful that I can follow, then another segmentation fault and core dump. Let's try to debug ...

Code:
gdb vlc test.mp3
... maybe getting somewhere ...

Code:
Thread 5 "vlc" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffdbcfb700 (LWP 6312)]
0x00007fffdbae809f in ?? () from /usr/lib/libQt5XcbQpa.so.5
... let's check another Qt program ...

Code:
gdb qv4l2
... and we have another segfault pointing at the libQt5XcbQpa.so.5 library. I tried it with notepadqq and got a segfault as well.

I took a look at https://www.archlinux.org/packages/e...6_64/qt5-base/ and I see that Qt 5.12.0 came out on 12/5/2018. Maybe just a bug in 5.12 I have to wait out? Reverting to 5.11 didn't seem to help, though, but I have no idea what version was the last one I know worked.

Anybody have any ideas? Details and console logs available upon request.
 
Old 12-18-2018, 01:27 PM   #2
jsbjsb001
Senior Member
 
Registered: Mar 2009
Location: Earth? I would say I hope so but I'm not so sure about that... I could just be a figment of your imagination too.
Distribution: Currently OpenMandriva. Previously openSUSE, PCLinuxOS, CentOS, among others over the years.
Posts: 3,440

Rep: Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784Reputation: 1784
You shouldn't cross-post. But yes, it more likely than not is indeed a bug, so yes, you'd likely have to wait it out.
 
Old 12-19-2018, 01:38 AM   #3
IronManRust
LQ Newbie
 
Registered: Aug 2014
Location: Chicago, IL, USA
Distribution: Arch
Posts: 4

Original Poster
Rep: Reputation: Disabled
Talking Revert All The Things!

I'm not totally sure where the regression ultimately lies, but reverting all the packages in the qt5 package group from 5.12 back to 5.11.2 fixed things:

Code:
pacman -U
https://archive.archlinux.org/packages/p/pyside2/pyside2-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-3d/qt5-3d-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-base/qt5-base-5.11.2-3-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-canvas3d/qt5-canvas3d-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-charts/qt5-charts-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-connectivity/qt5-connectivity-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-datavis3d/qt5-datavis3d-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-declarative/qt5-declarative-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-doc/qt5-doc-5.11.2-1-any.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-examples/qt5-examples-5.11.2-1-any.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-gamepad/qt5-gamepad-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-graphicaleffects/qt5-graphicaleffects-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-imageformats/qt5-imageformats-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-location/qt5-location-5.11.2-2-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-multimedia/qt5-multimedia-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-networkauth/qt5-networkauth-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-quickcontrols/qt5-quickcontrols-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-quickcontrols2/qt5-quickcontrols2-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-remoteobjects/qt5-remoteobjects-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-script/qt5-script-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-scxml/qt5-scxml-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-sensors/qt5-sensors-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-serialbus/qt5-serialbus-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-serialport/qt5-serialport-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-speech/qt5-speech-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-svg/qt5-svg-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-tools/qt5-tools-5.11.2-2-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-translations/qt5-translations-5.11.2-1-any.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-virtualkeyboard/qt5-virtualkeyboard-5.11.2-3-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-wayland/qt5-wayland-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-webchannel/qt5-webchannel-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-webengine/qt5-webengine-5.11.2-2-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-webglplugin/qt5-webglplugin-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-webkit/qt5-webkit-5.212.0alpha2-21-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-websockets/qt5-websockets-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-webview/qt5-webview-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-x11extras/qt5-x11extras-5.11.2-1-x86_64.pkg.tar.xz
https://archive.archlinux.org/packages/q/qt5-xmlpatterns/qt5-xmlpatterns-5.11.2-1-x86_64.pkg.tar.xz
I tested vlc, notepadqq and qv4l2 and all come up fine again.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
LXer: notepadqq – Notepad++ for Ubuntu Linux LXer Syndicated Linux News 0 03-26-2016 07:26 PM
[SOLVED] vlc 2.2.2 (alien's form 2016-02-13) needs qt5 fsauer Slackware 6 02-16-2016 03:52 AM
qv4l2 doesn't do fullscreen or deinterlace? Any other lagless options with pvr-150? Holering Linux - Hardware 2 03-30-2014 10:49 AM
LXer: VLC 2.1 Is Now Available: Qt5 Happy, Audio Improvements LXer Syndicated Linux News 0 09-26-2013 12:10 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 05:09 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration