Re: HEADS UP: PCI Chnages

From: John Baldwin <jhb_at_FreeBSD.org>
Date: Thu, 15 Apr 2004 14:33:46 -0400
On Wednesday 14 April 2004 12:15 pm, Vladimir Egorin wrote:
> On Tue, Apr 13, 2004 at 11:09:29PM -0400, John Baldwin wrote:
> 	> On Friday 09 April 2004 06:18 pm, M. Warner Losh wrote:
> 	> > In message: <20040409220656.GA1993_at_math.uic.edu>
> 	> >
> 	> >             Vladimir Egorin <vladimir_at_math.uic.edu> writes:
> 	> > : I hoped to get ACPI suspend/resume working on a machine with
> 	> > : ASUS P4B533 motherboard.  Until today,  the machine would
> 	> > : resume from a suspend for a couple of seconds, but then lock
> 	> > : up or go into debugger if it is enabled in the kernel.   After
> 	> > : today's build, it doesn't come back at all -- video stays off,
> 	> > : and no reaction to the keyboard.  What can I do to help with
> 	> > : debugging this problem?
> 	> >
> 	> > looks like my laptop has similar issues.
> 	>
> 	> The LCD isn't going to come back on until we have a vga driver with DPMS
> 	> support in the kernel to properly turn the LCD on and off via DPMS for
> 	> suspend/resume.
> 	>
> 	> --
> 	> John Baldwin <jhb_at_FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
> 	> "Power Users Use the Power to Serve"  =  http://www.FreeBSD.org
>
> I don't understand.   This used to work (after acpi suspend
> the monitor would turn off, and would come back on after
> resume).  The machine would crash a couple of seconds afterwards.
> I understand very little about this stuff though.

We now turn the graphics adapter (PCI device) off on suspend, so it no longer 
manages the LCD/display power management for us and we need to do it 
ourselves.

-- 
John Baldwin <jhb_at_FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org
Received on Thu Apr 15 2004 - 09:44:52 UTC

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