Suspend drains battery on IBM T42
bvowk at math.ualberta.ca
Fri Oct 14 09:23:56 PDT 2005
On Fri, 14 Oct 2005, Alexandre "Sunny" Kovalenko wrote:
> On Thu, 2005-10-13 at 01:02 +0000, Eric Kjeldergaard wrote:
>> you may want to check out radeontool
>> http://www.init-main.com/radeontoolport.tar.gz . Another common user
>> of power in suspended laptops seems to be USB not shutting down. Good
>> luck with your troubles,
> Good way to check whether USB is the culprit is to use something like
> USB-powered reading light and suspend. On mine (Averatec 3150H) it stays
> on, even when machine seem to go to sleep. I don't have solution for
> this though...
Ok, the dpms patch got me to about 12 hours of life, if I used radeon
tool to turn it all off, I get about 16 hours. Which is a *HUGE*
improvement, and I'm very happy with that. My radeon chipset is still
warm in suspend mode (I pulled the keyboard off and hooked a thermal
probe up to it) I don't know if anyone else has noticed that.
However, I've got the USB problem listed above as well. I'd really like to
solve that, I expect it would boost my suspend time up to APM times.
More information about the freebsd-mobile