Re: VESA DPMS Driver

From: Anish Mistry (mistry.7_at_osu.edu)
Date: 04/30/04

  • Next message: Doug White: "src/sys/vm/vm_init.c v1.43 hangs amd64" 
    To: freebsd-current@freebsd.org
Date: Fri, 30 Apr 2004 17:02:45 -0400

    On Friday 30 April 2004 04:19 pm, John Baldwin wrote:
    > On Thursday 29 April 2004 01:20 am, Benjamin Close wrote:
    > > Hi All,
    > > I like many have suffered the battery drain of the laptop screen
    > > remaining on while the system is suspended. I've created a driver that
    > > allows the screen to be shutdown by DPMS provided acpi supports video
    > > mode changes. Beware, this is my first kernel driver so it's nothing
    > > great. Hopefully it will help someone with enough knowledge build a
    > > better driver.
    > >
    > > It's a loadable kernel module and the only tweak required to get it
    > > compiling should be in the Makefile.
    > >
    > > You can grab it from:
    > > http://www.clearchain.com/people/benjsc/download/vesa_dpms.tar.gz
    > > A URL as the list strips attachments.
    >
    > I merged this into the acpi_video(4) driver (which already takes over ACPI
    > devices with a DOD, etc. handle) so that the two drivers aren't mutually
    > exclusive. Unfortunately, my laptop doesn't have any _DOD, etc. methods
    > for its video device so I can't test it. It's somewhat hackish as only
    > i386 has VM86 support, but the patch is at:
    >
    > http://www.FreeBSD.org/~jhb/patches/acpi_video_dpms.patch
    Just tested this, and it seems to work. :) 

    -- 
Anish Mistry

  • Next message: Doug White: "src/sys/vm/vm_init.c v1.43 hangs amd64"

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