suspend/restore almost works on Sony PCG-GRX570,
acpi_video not good
George Hartzell
hartzell at kestrel.alerce.com
Tue Jun 28 18:49:07 GMT 2005
John Baldwin writes:
> On Monday 27 June 2005 06:57 pm, George Hartzell wrote:
> > John Baldwin writes:
> > > On Sunday 19 June 2005 06:31 pm, George Hartzell wrote:
> > > > Hi,
> > > >
> > > > I'm working on a Sony PCG-GRX570.
> > > > [...]
> > >
> > > The problem is that your LCD isn't turned back on via DPMS, but there's
> > > not a good way to fix that always. Especially if your BIOS doesn't
> > > support DPMS.
> >
> > Can you say a bit more about this? [...]
>
> The ACPI spec says that the OS is supposed to power down the attached
> monitor using DPMS before it shuts down the video controller and that
> it should turn the monitor back on using DPMS after it has resumed the
> video controller. FreeBSD currently just does the video controller
> parts (sort of) and doesn't do the DPMS stuff at all except in the
> patch to hack acpi_video, and that only works if your VGA BIOS
> supports DPMS and it can only work for the primary monitor even then.
So, do you think that I'm hanging when I try to resume because the
display wasn't shut off using DPMS before FreeBSD shutdown (or
sort-of-shutdown) the video controller), or do you think that the lack
of DPMS shutdown confounds the situation?
g.
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