With recent (post 9 march) Ubuntu Jaunty updates nvidia restricted drivers do not accomplish to "On Demand Interrupts" enabled any more. This results in increased power consumption and reduced battery life.
Despite stating in Xorg.0.log (**) NVIDIA(0): Option "OnDemandVBlankInterrupts" "true" Powertop reports: 15.2% ( 49.5) <interrupt> : nvidia with nvidia interrupts ranging from 45 to 60. Since powertop reports video card interrupts along with USB host controller I have previously removed uhci_hcd module from kernel. If you need any more in depth details please just ask! Installed packages are: ii nvidia-180-kernel-source 180.37-0ubuntu1 ii nvidia-glx-180 180.37-0ubuntu1 Linux 2.6.28-9-generic #31-Ubuntu SMP Wed Mar 11 15:43:58 UTC 2009 i686 GNU/Linux _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
