> Wow, that's very nice. I have a T40 myself too, but I'm on Ubuntu 7.04, which > doesn't have > the tickless kernel yet, so I'm just following the list for ideas. The min I > can get it down to > is 12W (with the LCD all the way down, and only OOo running... need it for > lectures), the > usual is 16W. No wireless yet either.
That's about the figures I got when I used 7.04. The difference with 7.10 is very noticable! I get about 1.5h more on my extended battery now. Without using wireless and the display up I usually have 13-14W surfing the internet. > What do you mean by rmmod? removing the usb modules from the kernel with sudo rmmod uhci-hcd ehci-hcd When I need usb I can use 'sudo modprobe' to load them again > > because Ndiswrapper causes about 80 wakeups and I don't reach C4 > > anymore. > Is it a necessary to use ndiswrapper for your case? As nowadays, it > seems that most wifi cards have native driver. I have a broadcom bcm4318. The native drivers don't support 54mbit/s yet and they are quite unstable and didn't work with wpa for me. > My chipset is also a ICH4-M and the -hrt patches work for me. that's nice. It seems to me that i have to learn compiling my own kernel, then. If the extra timer interrups are gone, my system would be at about 25 wakeups (down from 41 in the best case). It would be nice to know if this is noticable, because otherwise i wouldn't want to spend time and possible frustration on using the hrt-patches. Does anyone have a few numbers, what the difference from 40 to 20 wakeups can be? Here is my current powertop output: Cn Verweildauer P-States (Frequenzen) C0 (Prozessor läuft) ( 0,9%) 1500 MHz 0,4% C1 0,0ms ( 0,0%) 1000 MHz 0,0% C2 17,8ms (22,0%) 800 MHz 0,0% C3 22,7ms (23,0%) 600 MHz 99,6% C4 22,8ms (54,1%) Aufwachen pro Sekunde : 46,2 Intervall: 15,0s Stromverbrauch (nach ACPI): 9,5W (5,1 Std.) Häufigste Ursachen für das Aufwachen: 45,6% ( 16,6) <interrupt> : extra timer interrupt 16,1% ( 5,9) S20sysfsutils : queue_delayed_work_on (delayed_work_timer_fn) 11,0% ( 4,0) <interrupt> : eth0, yenta, yenta, Intel 82801DB-ICH4, ndiswrapper 4,6% ( 1,7) gnome-terminal : schedule_timeout (process_timeout) 3,5% ( 1,3) ntos_wq/0 : wrap_set_timer (timer_proc) 2,7% ( 1,0) <kernel core> : queue_delayed_work_on (delayed_work_timer_fn) 2,7% ( 1,0) dhcdbd : schedule_timeout (process_timeout) 2,0% ( 0,7) firefox-bin : futex_wait (hrtimer_wakeup) -- the list is longer here --- The 9.5W is because the fan was running. The maximum C4 I get is about 70-80% _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
