HEADS UP: PCI Chnages
John Baldwin
jhb at FreeBSD.org
Thu Apr 15 11:44:52 PDT 2004
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
More information about the freebsd-current
mailing list