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Date:      Wed, 28 Aug 2002 15:43:07 +0200
From:      Mark Santcroos <marks@ripe.net>
To:        Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org>
Cc:        acpi-jp@jp.FreeBSD.org, current@FreeBSD.ORG
Subject:   Re: ACPI video driver (for Dell Latitude C640)
Message-ID:  <20020828134307.GA892@laptop.6bone.nl>
In-Reply-To: <20020827.175855.112858711.iwasaki@jp.FreeBSD.org>
References:  <20020825193459.GA725@laptop.6bone.nl> <20020826.223258.00576482.iwasaki@jp.FreeBSD.org> <20020826134202.GA1637@laptop.6bone.nl> <20020827.175855.112858711.iwasaki@jp.FreeBSD.org>

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On Tue, Aug 27, 2002 at 05:58:55PM +0900, Mitsuru IWASAKI wrote:
> For starting, I think just extending vga_pci would be OK.

I hacked up a very rough version of a acpivideo driver for my specific
DSDT.

My screen now goes off if I suspend. I also think that I figured out what
I need to turn it back on on resume , however I have a problem.

It seems that the 'device_resume' functions are called rather unreliably.

Most of the time it is not called at all, I couldn't find a pattern yet.
Is this a known problem?

/*
* Re-wake the system. 
*
* XXX note that a better two-pass approach with a 'veto' pass
*     followed by a "real thing" pass would be better, but the
*     current bus interface does not provide for this. 
*/

I found this comment, which might be related?

So like I said, if I can get the resume function to work, it might be
solved.

Mark

-- 
Mark Santcroos				RIPE Network Coordination Centre
http://www.ripe.net/home/mark/		New Projects Group/TTM

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