Date: Tue, 28 Jun 2005 11:49:20 -0700 From: George Hartzell <hartzell@kestrel.alerce.com> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org, hartzell@alerce.com Subject: Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good Message-ID: <17089.39856.172282.951828@satchel.alerce.com> In-Reply-To: <200506281341.21023.jhb@FreeBSD.org> References: <17077.62001.211846.349890@satchel.alerce.com> <200506271715.14687.jhb@FreeBSD.org> <17088.33872.136766.621988@satchel.alerce.com> <200506281341.21023.jhb@FreeBSD.org>
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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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