VESA DPMS Driver

[John Baldwin]

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

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org