no video coming out of S3

[Nate Lawson]

Brian Gruber wrote:
> I'm having trouble bringing my computer out of S3
> suspend, and am hoping someone may be able to help me.
> 
> The computer itself successfully comes out of suspend
> when I press the power button, but the video does not
> come back. Reading about this i discovered
> hw.acpi.reset_video, which sounded like exactly what I
> needed; alas, it did nothing.
> 
> Reading further mailing lists, I found mention that
> X's DRI could screw this up. So I set up my computer
> not to launch X on boot, and rebooted it (since emails
> seemed to say that once DRI was loaded, there was no
> undoing its affects without a reboot). Still, the
> video did not come back.
> 
> i'm not sure what to do now, or even what details are
> helpful. I will tell you that I'm using an ATI Radeon
> QY RV100 7000/VE, and the computer is an IBM NetVista
> 8307-82U. uname -a:
> FreeBSD calvin 6.2-RELEASE-p4 FreeBSD 6.2-RELEASE-p4
> #0: Fri Apr 27 16:11:48 EDT 2007    
> root at calvin:/usr/obj/usr/src/sys/CALVIN  i386
> 
> Also, I've noted that under windows on this same
> computer (i have it setup to dual-boot), where S3
> works fine, I can bring it out of suspend with both
> the keyboard and mouse (both PS/2) as well as the
> power button. Probably just an implementation
> difference, but perhaps important in a way I don't
> understand.

Try using the radeontool port.  I think you might find some info in the
acpi@ archives.

I think one solution we should try is to do the various BIOS video reset
routines after powering up everything again (D3->D0).  At the moment,
the code runs kind of early since it runs in real mode.  We'd have to do
it in VM86 mode after the video hw was powered back up.

I thought jhb@ once had a DPMS patch that did something like this but I
dunno.

-- 
Nate