On 20:09 Tue 25 Mar , Sean McNamara wrote: > But still.... 25 W on my system is only barely attainable on full screen > bright, disk grinding as hard as it can, with both cores maxed out. It > might be that 25W is more normal for the larger T61.
My T61 started around 21-22W under a typical workload before I did some optimizing. I disabled kernel module autoloading (pcmcia, usb, bluetooth, mmc, firewire), enabled cpufreq, and did the other powertop suggestions. I finally got screen brightness and the other hotkeys working with a magical boot-time kernel parameter: acpi_osi="Windows 2000" Now I'm regularly around 16-17W / 180-190 wakeups/sec. With effort (unloading sound and wireless modules, turning screen brightness way down) and a completely idle system, I can get around 13.5W. The three main remaining offenders are split roughly equally between firefox (2.0.0.12), sound/wireless interrupts, and extra timer interrupts. Increasing my router's beacon time to 1000ms didn't appear to help a whole lot, unfortunately. The mixer applet's fairly high up, too. One weird thing: even when unused, the sound modules resulted in many interrupts anytime after playing music. If I unload and reload them, those go away. Thanks, Donnie _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
