Leann,
What works in Intrepid is the workaround. Dimming and Fn keys are not
implemented in Intrepid.
** Changed in: linux (Ubuntu)
Status: Fix Released => In Progress
** Description changed:
Fn keys don't work for dimming the screen, though they do stimulate the
sonybright.sh script.
xbacklight works if the notebook has an Intel 965 (x3100) display
adapter, but is subject to bug #176888 (won't work on Hardy, bad XRandR
setting).
There is no known method for setting the LED backlight on newer Vaios
with nVidia GeForce 8 series adapters, though it is possible to pseudo-
dim by making the LCD blacker (this unfortunately doesn't help with
power-saving).
There are 2 problems here:
1) The Vaio's LED screen is really very bright when burning at 100% and is
hard to look at for any period
2) Battery life suffers
Pretty much all the newer Vaios (2007 onwards) have some combination of
these graphics adapters so this bug should be widespread (and much
appreciated when fixed!). A couple of script solutions have been
proposed in this bug report; please feel free to hack and make
suggestions.
One solution for notebooks with Intel 965 display adapters is to install
xbacklight:
]$ sudo apt-get install xbacklight
Then add these 2 lines to /etc/rc.local (or just execute from the
command line):
xrandr --output LVDS --set BACKLIGHT_CONTROL native
/etc/init.d/acpid restart
And edit /etc/acpi/sonybright.sh so that is contains only this:
#!/bin/bash
if [ "x$1" = "xdown" ]; then
xbacklight -time 100 -steps 10 -dec 10 2>/tmp/sonybright.log
elif [ "x$1" = "xup" ]; then
xbacklight -time 100 -steps 10 -inc 10 2>/tmp/sonybright.log
else
echo >&2 Unknown argument $1
fi
+
+ Please note that this will not affect brightness on nVidia 8 series
+ adapters, just Intel adapters.
--
unable to adjust screen brightness on recent Sony Vaio notebooks
https://bugs.launchpad.net/bugs/173652
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