[Bug 415023] Re: brightness is broken on MSI WIND U100

[Steve Langasek]

On Thu, Oct 29, 2009 at 11:31:34PM -0000, yze wrote:

> How do I reverse that "echo 4" command, as my suspend has stopped working,
> and the only things I have done are the echo command and the "nomodeset"
> on grub.  I have tried removing "nomodeset" in grub, but the suspend is
> still not working. I presume that I need to send a different number to
> /proc/acpi/video/IGD/DOS, but I don't know which one....

This setting does not persist across reboots, so if you've already made
changes to grub and rebooted, then the DOS setting is not related to your
problem.

Also, the documented difference between 4 and 0 (the in-kernel default) is
only whether the BIOS changes the screen brightness on power events, so it
shouldn't have anything to do with your suspend/resume anyway...

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org

-- 
brightness is broken on MSI WIND U100
https://bugs.launchpad.net/bugs/415023
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