QT5 app don't load via .xinitrc

[Arnaud--]

Hello,


I have a QT5 apps which runs great in xterm but when I want to start it in a .xinitrc file. I have the following error :

QXcbXSettings::QXcbXSettings(QXcbScreen*) Failed to get selection owner for XSETTINGS_S atom
QXcbConnection: XCB error: 163 (Unknown), sequence: 150, resource id: 0, major code: 149 (Unknown), minor code: 20

My .xinitrc is very simple :

/path/qt5_app -platform xcb



As I write previously if I create an .xinitrc file with only a call to xterm it's work and if I call my app in the xterm window it's work...

Thanks to help me to solve my problem or find an other solution to start my app just after a startx command.

[anda_skoa]

This could be an issue with the process environment.

When you launch a terminal, the shell is starts might read different config files then when it runs as a non-interactive process (Bash does that).
Check the environment right in xinit and in xterm
Something

env >> /tmp/xinitenv

in .xinitrc and then typing something similar in xterm and then comparing the files.

Another thing could be a race condition, i.e. something else starting or changing the X server state that has finished by the time you enter a command in xterm but that is not yet finished when you run your program directly.

Cheers,
_

[Arnaud--]

Hello,

thanks for you reply.

I have already check environments and environments are the same :

- via "xterm -e "env"" command
- when xterm is loaded


Can you explain to me what is XSETTINGS and which environment variable are required.


I also try :
- to load my app in bashrc file in order to load it when bash is call by xterm ==> same problem.
- to load my app in fluxbox ( in startup script) ==> same problem.

I have no more idea...


For information, previous I loaded my QT4 app via xinitrc and it's worked without problem, but I need QT5 for HTML5 support.


Thanks

[anda_skoa]

I have already check environments and environments are the same :

- via "xterm -e "env"" command
- when xterm is loaded

Have you also checked the environment your programs sees when it is started from .xinitrc?

Can you explain to me what is XSETTINGS and which environment variable are required.

It isn't an environment variable but an XAtom, basically a setting that X clients can retrieve from the X server.
It could be accessed by the XCB plugin or by the style. You could try changing the style to rule that out.


Cheers,
_

[Arnaud--]

Have you also checked the environment your programs sees when it is started from .xinitrc?

I don't know how to do that :-(

It could be accessed by the XCB plugin or by the style. You could try changing the style to rule that out.

I don't know how to do that :-(


Have you try to reproduce my issue on your development platform or I am the only one with this problem ?


Thanks again

[anda_skoa]

I don't know how to do that :-(

Have you tried directly calling env in the .xinitrc script?

I don't know how to do that :-(

You can pass a style name to the -style commandline argument or use QStyleFactory in your main() to create one and pass it to QWidget::setStyle on your top levle window.

Have you try to reproduce my issue on your development platform or I am the only one with this problem ?

No, sorry, don't have time for that right now.

Cheers,
_

[doecz]

You must set Xinerama to enable in Xorg (file xorg.conf or 10-screen.conf)

Section "ServerLayout"
    Identifier   "Layout0"
    Screen      0 "Screen0" 0 0
    Option       "Xinerama" "1"
EndSection

Section "ServerLayout"
    Identifier   "Layout0"
    Screen      0 "Screen0" 0 0
    Option       "Xinerama" "1"
EndSection

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