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SubjectTips for S3 resume on radeon cards
Hi!

Stefan has pretty usefull tips for getting S3 to work on radeon
notebooks. This brings whole new class of systems to be usable for S3,
please apply.
Pavel

--- clean/Documentation/power/video.txt 2004-02-05 01:53:53.000000000 +0100
+++ linux/Documentation/power/video.txt 2004-04-23 12:19:00.000000000 +0200
@@ -1,7 +1,7 @@

Video issues with S3 resume
~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 2003, Pavel Machek
+ 2003-2004, Pavel Machek

During S3 resume, hardware needs to be reinitialized. For most
devices, this is easy, and kernel driver knows how to do
@@ -15,7 +15,7 @@

There are three types of systems where video works after S3 resume:

-* systems where video state is preserved over S3. (HP Omnibook xe3)
+* systems where video state is preserved over S3. (Athlon HP Omnibook xe3s)

* systems that initialize video card into vga text mode and where BIOS
works well enough to be able to set video mode. Use
@@ -26,6 +26,10 @@
point, but it happens to work on some machines. Use
acpi_sleep=s3_bios (Athlon64 desktop system)

+* radeon systems, where X can soft-boot your video card. You'll need
+ patched X, and plain text console (no vesafb or radeonfb), see
+ http://www.doesi.gmxhome.de/linux/tm800s3/s3.html. (Acer TM 800)
+
Now, if you pass acpi_sleep=something, and it does not work with your
bios, you'll get hard crash during resume. Be carefull.

--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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