Date: Fri, 30 Jan 2004 10:25:29 +0100 From: Mark Santcroos <marks@ripe.net> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-acpi@jp.freebsd.org Subject: Re: API to turn off the display Message-ID: <20040130092529.GA725@laptop.6bone.nl> In-Reply-To: <200401291132.54455.jhb@FreeBSD.org> References: <200401272247.59306.freebsd-current@webteckies.org> <1075339288.12013.232.camel@mobius.int.thebadger.org> <20040129162023.GA42359@laptop.6bone.nl> <200401291132.54455.jhb@FreeBSD.org>
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On Thu, Jan 29, 2004 at 11:32:54AM -0500, John Baldwin wrote: > I read the spec yesterday, and what is supposed to happen is this: The > display (LCD, CRT, etc.) is supposed to be powered down using DPMS. The > actual adapter is then supposed to be powered down using either PCI or ACPI > sleep states, and the adapter should not be powered down to a lower sleep > state (like D3) w/o using DPMS to power the display down to at least that > state first. This means that the kernel might need to grow a dummy vga > driver of some sort and some simple dpms support for suspend/resume. I second this. Nate, can you put it on your acpi-todo list? Mark
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