S3 resume in 2.6.10 on Dell D600 with black screen

S3 resume in 2.6.10 on Dell D600 with black screen

[Petr Olivka]

Hi!

  With 2.6.9 I can suspend and resume to RAM (S3 mode) without problem
(only under X I do not use dri). I have debian stable.

  But with kernel 2.6.10 after resume from S3 I have black screen. The
same result with radeonfb or with vga only (tested without X).

  It is not big problem for me, all is working for me under 2.6.9, but
maybe something is wrong now in 2.6.10.

  Nice day. Petr



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Re: S3 resume in 2.6.10 on Dell D600 with black screen

[Jing Su]

>   But with kernel 2.6.10 after resume from S3 I have black screen. The
> same result with radeonfb or with vga only (tested without X).

I have been experiencing the same problems with kernel 2.6.9 as well. 
The system works perfectly after suspend to disk (S4).  But with S3, I
get the blank screen with and without X.  I'm running Fedora 3, in an
Acer with an integrated Intel display adapter.

After resume from S3, the rest of the system comes up fine; I can even
SSH into the machine.  However, the display adapter does not come back
up.  The screen stays blank, with the backlight off.  I've tried
toggling the LCD/VGA display switch hotkey, to no avail.  Also, I've
brought the machine out of S3 in console, and then attempted to start
X.  X fails to start.  /var/log/messages shows the system going into
S3, and then coming out.  There are no error messages reported about
failure to re-start the video adapter.

I'm a competent programmer, though I have no experience with Kernel or
ACPI development.  If someone can give me some hints/pointers, I think
I can try to help out with this issue.


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