Bug#453782: xserver-xorg-video-nv: Please support suspend to ram

[Eugen Dedu <Eugen.Dedu@pu-pm.univ-fcomte.fr>]

Brice Goglin wrote:
> Eugen Dedu wrote:
> > But on computers like mine (MacBookPro v3) it does not work.  On
> > http://wiki.debian.org/MacBookPro#head-1d27e9182475ac6bf8a09771255ef5650d01c43c
> >
> > it is written that s2ram works with old nvidia drivers and vanilla linux.
>
> The nvidia driver knows a lot more than nv. It can tweak both X and the
> kernel to do things, it is much easier for nvidia to support s2ram.

Yes, I understand that.  But I prefer to use free software.

> > With linux's acpi_sleep=s3_bios, I execute s2ram -f.  At resume, the
> > computer works, but the screen is black, pressing CapsLock does not
> > change the LED.
>
> Here's what the upstream dev thinks about this:
> < bgoglin> aaronp: what's the status of s2ram with nv? should work?
> buggy and might be fixed? wontfix?
> < aaronp> My understanding was that it works as long as the system POSTs
> the GPU on resume.
> < ajax> which only works if the BIOS is there to be POSTed.
> < aaronp> right
>
> You might want to try passing -p (or maybe -s) to s2ram in case it
> helps. Try switching to VT console before suspend too.
>
> But there is nothing more to expect from xserver-xorg-video-nv.

Thank you for help, I'll try very soon and keep you informed.

--
Eugen