Bug 111805

Summary: opengl and xinerama: opengl widgets are displayed on primary screen only
Product: [Plasma] kwin Reporter: Daniel Franke <franke.daniel>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Gentoo Packages   
OS: Linux   
Latest Commit: Version Fixed In:

Description Daniel Franke 2005-08-31 10:07:40 UTC 
Version:            (using KDE KDE 3.4.2)
Installed from:    Gentoo Packages
Compiler:          gcc-3.3.5 

I'm not sure whether this is a kde or an xorg/x11 bug, the gentoo people say it's KDE. Ok, here we are ...

Summary:
Xinerama setup, two screens, KDE-3.4.2: I found that any opengl widget (glxgears [xorg], qt opengl examples [qt], opengl screen savers [kde]) is displayed on primary screen (left) only.  If moved to the secondary screen (right), any opengl-widget "vanishes" and  reappears only if moved back to the 
right screen.   

Note on opengl screen savers: they seem to take the second screen into account (e.g. fireworks), but it's just black, no display at all ...

A detailed description can be found here: 
http://forums.gentoo.org/viewtopic-p-2688188.html#2688188

Another report to bugs.gentoo.org is here:
http://bugs.gentoo.org/show_bug.cgi?id=104304

Any hints what's wrong?
Comment 1 Daniel Franke 2005-08-31 11:20:29 UTC 
Different setup: 
SuSE 8.x, KDE-3.4.0 (compiled from sources), Qt-3.3.4, XFree-4.3.0 xinerama enabled, Matrox G550
 -> glxgears works fine on both screens
Comment 2 Thiago Macieira 2005-09-01 22:11:37 UTC 
Reassigning to kwin. Maybe Luboš has an idea.
Comment 3 Thiago Macieira 2005-09-01 22:12:07 UTC 
Reassigning to kwin. Maybe Luboš has an idea.
Comment 4 Lubos Lunak 2005-09-06 17:12:42 UTC 
Unless you can prove it works outside of KDE, which I doubt, this is either opengl or X problem, so please first test without KDE and then either reopen or report to them.
Comment 5 Daniel Franke 2005-09-06 17:49:07 UTC 
You're right, doesn't work under plain X either. Should have checked before reporting anything -- sorry.

Daniel