Hello everyone,
I installed Debian sid on my new Thinkpad T500 a few days ago and is now
using powertop to check the power usage. When it's idle (hands off, no
programs other than GNOME) it's not bad:
Wakeups-from-idle per second : 43.0 interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
26.0% ( 10.3) gnome-settings- : schedule_hrtimeout_range
(hrtimer_wakeup)
25.3% ( 10.0) <kernel core> : mod_timer (ehci_watchdog)
17.6% ( 6.9) <interrupt> : extra timer interrupt
...
However, when I tried moving the trackpoint in a circular motion until
it updates:
Wakeups-from-idle per second : 679.9 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
63.9% (499.9) <interrupt> : PS/2 keyboard/mouse/touchpad
12.1% ( 94.6) <kernel IPI> : Rescheduling interrupts
6.0% ( 46.9) <interrupt> : firewire_ohci, uhci_hcd:usb7, HDA
Intel
...
In short, the number of wakeups jumps from below 50 to almost 700, with
over half coming from what seems to be the keyboard/mouse driver. Is
this normal? Using the touchpad results in the same behavior, using the
keyboard will increase total interrupts to 200-300.
This is debian sid with up-to-date packages.
ci...@gurame:~$ uname -a
Linux gurame 2.6.29-1-amd64 #1 SMP Fri Apr 17 10:12:36 UTC 2009 x86_64
GNU/Linux
Thanks in advance!
Cipta
--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]
