Re: thinkpad suspend to ram and backlight

From: Pavel Machek
Date: Sun Oct 02 2005 - 18:35:58 EST


Hi!

> > > > When I suspend to RAM on x32, backlight is not turned off. (And, IIRC,
> > > > video chips is not turned off, too). Unfortunately, backlight is not
> > > > turned even when lid is closed. I know some patches were floating
> > > > around to solve that... but I can't find them now. Any ideas?
> > >
> > > if your thinkpad has ati radeon, you can use this:
> > >
> > > http://www.thinkwiki.org/wiki/Radeontool
> >
> > radeontool light off before suspend indeed works, but I'd like to
> > solve it properly.
>
> Well, it depends what you call "properly".

I'd like it to work as well as it does for PPC :-).

> There are indeed some patches
> floating around that put the radeon chip in D2 state, that seem to
> help.

I found that patch with a little help from the list. Unfortunately, it
makes things worse (not better) on my X32. [There was another
regression here. With 2.6.8 or so, backlight was off during S3 sleep
(but chip still running and eating power). With 2.6.14-rc3, not only
chip is running, but backlight is forced to max to add an insult to
the injury].
Pavel
--
if you have sharp zaurus hardware you don't need... you know my address
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/