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Subject: Re: ACPI Hibernate and Suspend Strange behavior 2.6.7/-mm1
From: Vernon Mauery <vernux@us.ibm.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Volker Braun <volker.braun@physik.hu-berlin.de>,
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On Fri, 2004-07-16 at 10:00, Pavel Machek wrote:
> Hi!
> 
> > > And, if I would shine
> > > a bright light on the screen, I could make out text on it.  In other
> > > words, the backlight was off but it was still displaying stuff.
> > 
> > I cannot reproduce that (T41), but maybe I'm looking at the wrong angle or
> > your eyes are better. In any case I understand that this image is very
> > faint.
> > 
> > I'm not sure whether this is actually part of the problem. The
> > liquid crystals might just keep their current orientation, or there might
> > be some residual charge in the driver circuit. Do you want to take your
> > display apart and check with a voltmeter? I dont't :-)
> 
> If it is still there after half an hour, its certainly part of the problem.
> LCD crystals loose the orientation in seconds, IIRC.
> 				Pavel

I found that on my T40, if I am using the radeonfb built into the kernel
I cannot see a ghost image, but if I use VESA or vga=normal, I can see a
ghost in S3.

--Vernon