* Linus Torvalds [off-list ref] wrote:

quoted

disabling the following radeonfb options in the .config made resume 
work again:

In general, don't even *try* to use radeonfb for suspend/resume.

I don't think it has ever worked, except on some very rare laptops 
(largely PPC Macs) where people had enough information to set up the 
PLL's.

I don't think the other framebuffer drivers are much better.

You're better off using the VGA console, and lettign X re-initialize 
the graphics device. That generally at least has a reasonably good 
chance of working.

Re-initializing graphics modes really is very hard. You can try with 
the BIOS video hack (I forget the kernel command line to turn it on), 
but we really do end up depending on X doing it better.

it's the s3_sleep boot option and /proc/sys/kernel/acpi_video_mode, but 
that didnt make a difference.

Some day we may have modesetting support in the kernel for some 
graphics hw, right now it's pretty damn spotty.

having no video is what i'd have expected - but getting a /hang/ is not 
what i'd have expected.

	Ingo