Suspend drains battery on IBM T42

Barkley Vowk bvowk at
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
>> .  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.

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