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To: gentoo-laptop@g.o
From: Simone Mainardi <simoneinweb@...>
Subject: nvidia OnDemandVBlankInterrupts
Date: Thu, 27 Sep 2007 18:15:33 +0200
Hi guys!

I've found that with the new release of the nvidia drivers (100.14.19) is it
possible to enable the "OnDemandVBlankInterrupts" option. In 2D mode VBLANK
is not used, only in a 3D mode. The old driver was generating these
interrupts in all modes, now, by enabling this option, interrupts are
generated only when they are needed. This let us save about 60 wakes up from
idle per second. You can fuond the new drivers on the ~x86 repo. The only
thing you have to do after installing the 100.14.19 version is to put in
your "Device" section of your xorg.conf the option
"OnDemandVBlankInterrupts" "true".
I hope this could be useful for someone.

Simone

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Updated Jun 17, 2009

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