[ltp] Prevent brightness change for AC events

[Jochen Spieker]

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Hi,

I never understood why anyone wants their laptop to change screen
brightness an AC plugging anyway, but my system's current behaviour is
just mad: whenever I either plug or unplug the AC adapter, the screen
changes to full brightness. Pressing Fn+F5 or fn+F6 immediately returns
to the previous state plus or minus one step.

Does anybody have an idea where I can disable screen brightness changes
for AC events?

My system:

- X240 w/ full HD IPS panel
- running Debian sid amd64
- "Desktop": awesome window manager with a few added programs that I
  start in ~/.xsession:
  - xfce4-power-manager
  - gnome-settings-daemon
  - xset +dpms
  - xset dpms 0 0 300
  + a few unrelated programs

I didn't find a setting that may be responsible for this behavior in
either xfce4-power-manager or gnome-control-center. I have
laptop-mode-tools installed as well but use CONTROL_BRIGHTNESS=3D0 in
/etc/laptop-mode/conf.d/lcd-brightness.conf. I also took a look into
/etc/acpi but didn't find anything relevant.

What did I miss?

J.
--=20
I wear a lot of leather but would never wear fur.
[Agree]   [Disagree]
                 <http://www.slowlydownward.com/NODATA/data_enter2.html>

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