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-   -   Window redraw problems caused by OnDemandVBlankInterrupts (http://www.nvnews.net/vbulletin/showthread.php?t=139763)

Grond 10-06-09 05:37 PM

Window redraw problems caused by OnDemandVBlankInterrupts
 
Hi all,

I'm using X.Org X Server 1.6.3 with the 190.36 driver. I have experienced redraw problems with compiz where parts of windows were not correctly updated and sometimes even remained completely black. I have seen similar problems with the 185.18.36 driver. The problems did NOT go away even when I enabled "Force synchronization between X and GLX" in the compiz workaround plugin.

However, the problem did go away immediately after I disabled OnDemandVBlankInterrupts in my Xorg.conf. Therefore, I believe the redraw problem is related to that option.

This is a heads up to the NVIDIA developers so they can start digging in that area. The chip is a Quadro NVS 140M.

kcrudup 10-06-09 06:33 PM

Re: Window redraw problems caused by OnDemandVBlankInterrupts
 
Not to discredit your issue, but as another datapoint I've had OnDemandVBlankInterrupts turned on since Day 1 (I have a notebook and this helps a little with power consumption; it's enlightening to run "powertop" sometimes and see what's waking your system out of idle, even for folks like you on desktop systems) and haven't seen this yet.

Dizzle7677 10-07-09 11:45 AM

Re: Window redraw problems caused by OnDemandVBlankInterrupts
 
See also ...
http://www.nvnews.net/vbulletin/show....php?p=2093726


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