[ltp] Re: Re: Re: Question on X60 (additional note for Z61t)

[Fredrik Wendt]

Ian Redfern wrote:
> To get the brightness keys to work under Ubuntu Feisty try adding
> "blacklist video" to /etc/modprobe.d/blacklist - see
> http://ubuntuforums.org/showthread.php?t=350562

I tried this on my Z61t (9443-4GG) and it's true that the Fn+End and Fn
+Home key combinations now correctly dims or brightens the screen. It
previously didn't hang things - it just cycled the screen from a blank
VT a couple of times (most of the time this was three or four times) and
then back to X (at least by the looks of it - a blank black screen). 

However, on my laptop, blaclisting the video module affects
the /proc/acpi/ibm/brightness accordingly:

Using the key combinations it's clear that we actually have 8 different
levels (on the eightth (8th) key hit, nothing happens), the proc-acpi
file says there are 7 levels.

I can dim the screen using "echo level 1 > /proc/acpi/ibm/brightness"
but it only lowers the brightness to a fix level no matter if I echo
level 1 or level 5 for instance. (It only takes one Fn+Home key stroke
to get back to full brightness (no matter what "level" I echoed into the
file).)

cat /proc/acpi/ibm/brightness always shows whatever was written/echoed
to the file last - it's value doesn't change after hitting Fn+Home/End.


Fn+F2 works.

/
	Fredrik Wendt (first post to this list)