[ltp] LCD brightness/Ubuntu 6.06

Richard Neill linux-thinkpad@linux-thinkpad.org
Fri, 12 May 2006 13:09:22 +0100


Norman Walsh wrote:

> What I can't decide is if this is some hardware problem related to the
> rigors of being shipped around and opened up and worked on or if this
> is some Ubuntu power-management tool gone awry. I suspect the latter
> because I've only ever seen the problem when the machine has been idle
> for a while.
> 

I suspect it's Ubuntu, rather than hardware. Look at the log files
(particularly /var/log/acpid.)

Also, a good test is to boot it with Knoppix. Knx doesn't do any power 
management at all by default (as far as I know), so you can eliminate 
hardware as an issue.

Richard