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Date: Thu, 5 Aug 2010 13:44:17 -0700
From: Christian Zander <czander@nvidia.com>
To: Jung-uk Kim <jkim@FreeBSD.org>
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Cc: Christian Zander <chzander@nvidia.com>,
	"freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>,
	Oleg Sharoyko <osharoiko@gmail.com>
Subject: Re: PCI config space is not restored upon resume (macbook pro)
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On Thu, Aug 05, 2010 at 01:35:01PM -0700, Jung-uk Kim wrote:
(...)
> > When using the NVIDIA driver, you will need to make sure that
> > you're using 256.44, you'll need to be running X at the time of
> > entry to S3/S4, and you'll need to make sure you've switched
> > away from X's VT (this didn't happen automatically on FreeBSD
> > last time I checked).
> 
> We *do* switch VTs unless it is explicitly turned off by 'sysctl 
> hw.syscons.sc_no_suspend_vtswitch=1'.  However, it was slightly 
> broken but I fixed it recently.
> 
> http://svn.freebsd.org/viewvc/base?view=revision&revision=210303
> 

OK. It didn't happen on FreeBSD 8.1 when I tried recently. That's
the only recent data point I have, though.


> > However, NVIDIA suspend/resume is largely untested on FreeBSD.
> 
> That's very sad news. :-(
> 

Well, it's not entirely by choice. I have yet to find a system on
which FreeBSD comes back from S3. In any case, the driver paths
taken on FreeBSD are nearly identical to those taken on
Linux, so given a sufficiently stable host, mileage should be the
same on both platforms

-- 
christian zander
ch?zander@nvidia.com