Re: t41, suspend on ram, power consumption

[Vernon Mauery <vernux@us.ibm.com>]

Bruno Ducrot wrote:
> On Tue, Jan 17, 2006 at 09:37:32PM +0100, Stefan Seyfried wrote:
> 
>>>Additionally, you probably want to consider the suspend2 kernel patch
>>>series from http://www.suspend2.net/ to allow for reliably shutting the
>>>system off without losing state and storing memory into your swap
>>>partition or a file.
>>
>>Has nothing to do at all with suspend to ram and the power consumption
>>when suspended.
> 
> 
> I'm not sure you are right with that claim.  There may be some code
> onto suspend2 patches that may help improve suspend/resume devices that
> are not yet merged to mainline.  I don't think however this fill fix
> the thinkpad problem of the OP though.

See "S3: high power consumption - Thinkpad T40/T41"
http://bugme.osdl.org/show_bug.cgi?id=3022

They have a patch that applies to the mainline kernel and fixes the problem.  It
is a video problem.  If the patch doesn't work immediatly for you, you might
have to add video=radeonfb:force_sleep=1 to the kernel command line and then add
your machine's dmi data to the whitelist.  The whitelist is pretty big by now,
though, so you may already be covered.

--Vernon

> 
> It's actually more or less a guess since I have not looked actually to
> the suspend2 code.
>