Bug#485465: remembering brightness/contrast

[jidanni@jidanni.org]

OK, thanks. In ~/.xsession I'll now use
xrandr --output LVDS --set BACKLIGHT 0

However, I must still face the blindingly bright xdm login screen.

By the way, please add this example:
BG> xrandr --output LVDS --set BACKLIGHT <value>
to the intel man page at "LVDS", and add a note that the higher the
number the brighter we mean, and note that this and the --prop values
reported are totally independent of any buttons on one's hardware...
each does not know about the other and adjusts independently.
(So a --prop will say we are at 7, but then as --set 5 makes things
brighter, as we were actually at hardware's 0!)

BG> There's also a backlight_control property that may help. See the manpage
BG> of intel for details.

       BACKLIGHT - current backlight level (adjustable)
       BACKLIGHT_CONTROL - method used to control backlight

OK, but the latter doesn't say "(adjustable)", so I'm afraid ... wait,
I indeed can do
xrandr --output LVDS --set BACKLIGHT_CONTROL native
(do add an example usage to the man page)
but it doesn't last thru an xdm login, and I'm not sure it does
anything... what I really want is all this X windows stuff __not to
tamper with the users backlight level unless requested__.

Somewhere in the /etc/init.d/xdm start sequence something is doing
the equivalent of
xrandr --output LVDS --set BACKLIGHT 7 #max
please tell it to cease and desist.