Kevin Oberman oberman at
Thu Apr 29 11:58:14 PDT 2004

> Date: Thu, 29 Apr 2004 14:50:16 +0930
> From: Benjamin Close <cisbjc at>
> Sender: owner-freebsd-current at
> 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: 
> A URL as the list strips attachments.

YES! Thanks you!

My T30 now suspends and turns off the back-light! Oddly, using DPMS
under X with xset(1), the display blanked but the back-light stayed
on. This really turns off the whole display.

I believe that two of the remaining suspend/resume issues on my laptop
are actually PCI issues and the other is a complete mystery. (It will
only suspend once. Subsequent suspends work, but the system immediately
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at			Phone: +1 510 486-8634

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