[ltp] Power drain with radeonfb and fbcon built in

Felix E. Klee linux-thinkpad@linux-thinkpad.org
Sun, 04 Nov 2007 17:47:03 +0100


At Sun, 4 Nov 2007 16:16:12 +0200,
Marius Gedminas wrote:
> The important bit is: do you get a "radeonfb (...): switching to D2
> state..." message as well?

Yes, I do.

> How much power does it draw while suspended?

Sun Nov  4 12:44:53 CET 2007
before: 46450 mWh
after:  mWh
diff: -46450 mWh
seconds: 4229 sec
result: -39541 mW
Your model seems to be affected.

> Then I got a T61 and never tried Gutsy on the T42.  My coworker
> currently has Gutsy installed on it, I can ask him if he has any power
> drain problems.

That'd be great.  I assume that many people don't realize right away
that they have this problem.  Although, a noticeable indication, aside
from poor battery performance and sleep.sh, is that the laptop stays
quite warm during Suspend to RAM.  That's surely not good for the
battery.

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Felix E. Klee
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