Bug 31066

Summary: Screen updates follows user input with dual-screens when using 3D
Product: xorg Reporter: Lucas <lvella>
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.5 (2009.10)   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
The configuration file. none

Description Lucas 2010-10-23 14:36:08 UTC 
Using the attached xorg.conf, which sets up 2 Xorg screens, when I run any OpenGL program (tested with glxgears, OpenArena and mplayer), the screen is frozen while I am not moving the mouse or typing something in the keyboard. So, if I run mplayer with gl backend, the movie (including the audio), plays nicely while I am moving the mouse, and freezes while there is no input.

When an OpenGL application is started, every moving/flashing thing in both screens is affected, so if I run glxgears on DISPLAY=:0.1, the network usage icon in the taskbar of DISPLAY=:0.0 also freezes while there is no input.

If I run one OpenGL application in one screen, and another in the other screen, the effect is avoided for a few seconds.

If I comment everything in the xorg.conf related to dual-screen zaphod mode, I get an extended desktop and the bug is not hit, so OpenGL applications works as expected in both monitors.
Comment 1 Lucas 2010-10-23 14:38:05 UTC 
Created attachment 39656 [details]
The configuration file.
Comment 2 Alex Deucher 2010-10-24 08:31:13 UTC 

*** This bug has been marked as a duplicate of bug 29726 ***

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