Re: Radeon S3/resume: VGA ROM POST from kernel

[Aman Gupta <themastermind1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Haven't tried it yet, but I was having problems just doing basic
suspend/resume with 2.6.8-rcX as well. After a resume with an
unpatched kernel I was unable to get the machine to respond to
commands to reboot the VGA bios or spin the harddrive. Something
changed between .7 and .8 but I'm not sure what - its not in the
radeon specific code since I didn't have that loaded in the kernel.

  Aman Gupta

On Mon, 19 Jul 2004 19:38:16 +0200, Stefan Dösinger
<stefandoesinger-RbZlAiThDcE@public.gmane.org> wrote:
> Hello,
> > I've implemented VGA POSTing using a real-mode tunnel from kernel
> > space. IMO, this has some advantages over user space methods:
> Great!!!!
> For some reason, it doesn't work for me(Kernel 2.6.8-rc2). I cleaned up my
> source directory and I'll try again with a clean build again. If it doesn't
> work I'll try 2.6.7.
> 
> Do I need any other patches?
> 
> > 1. It works with the aty/radeon_pm.c resume code. I don't see how to
> >    easily achieve this with user space methods.
> Do you have radeonfb and fbcon loaded(or compiled into the kernel)?
> 
> > 2. Real mode seems faster than userspace vm86
> 
> > 3. It is the right way. Bringing up the hardware is clearly the
> >    responsibility of the kernel/drivers resume code.
> Agreed. Someone wrote that this reset can't be performed by kernel code.
> 
> This is really great, and as soon as it works for me I'll upload it to my
> website.
> 
> Cheers,
> Stefan
>


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