Re: Suspend to RAM works, but no wake up. ATI Technologies Inc Rage Mobility P/M (rev 64) video card

[Henrik Brix Andersen <brix-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>]

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On Sun, 2005-06-26 at 09:57 +0200, Benedek Frank wrote:
> When I use this option, it does wake up when I hit a key. However, while
> asleep, the screen isnt completely off. I can hear a buzzing sound,
> very soflty, but I can definetally hear it. Also, when I open the
> lid, (it wont wake up yet, only on button press) I can see some text on
> the screen if I tilt it in the right angle. THe LCD seems off, but it
> does has some text on it, so it cannot be off, just dimmed to a maximum.
> ANd the buzzing sound gives it also away. I left the machine suspended
> at 33% battery yesterday at 2AM, and by 7AM when I woke up, the battery
> was dead, and the laptop shut down. Usually 33% gives me 40 mintues of
> work time, I think it should have lasted for a 5 hours suspension, no?

I have an IBM ThinkPad X31 (2672-XXH), also with a ATI Radeon (ATI
Technologies Inc Radeon Mobility M6 LY).

While I do not get the high pitched noise, I do see the problem with the
LCD backlight not powering off during S3. I have to use radeontool [1]
to power off the LCD backlight before going into S3 and reverse this
procedure when the laptop wakes up from S3.

Perhaps the in-kernel radeonfb driver could be modified to allow
powering down the LCD backlight before entering S3?

Sincerely,
Brix
[1]: http://fdd.com/software/radeon/
-- 
Henrik Brix Andersen <brix-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
Gentoo Metadistribution | Mobile computing herd

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