Brightness Problem in Ubuntu 10.10

I’ve got the problem with Ubuntu 10.10.  The brightness function keys work, but the screen always stays at max brightness.

  • A quick-fixes solution to adjust the brightness is:

1.) Install deb file from http://us.archive.ubuntu.com/ubuntu/pool/universe/x/xcalib/xcalib_0.8.dfsg1-2_i386.deb. As this this the deb file u can directly install on ur system.

2.)  Open ur terminal and type

$xcalib -co 60 -a (where 60 can be any percent) to dim the screen and xcalib -c to clear the settings and restore brightness. You could also map these commands to keyboard shortcuts, essentially rigging up two new brightness keys.

Granted, these don’t address the real problem, but they were the only solutions that worked for me. Hope this helps.

  • If u want to change ur sceen contrast then do this:

type the command

$xgamma -gamma .xx

where xx takes values between [01-99](lowest to highest)

ex. $xgamma -gamma .60

Or

$sudo setpci -s 00:02.0 F4.B=xx
where xx takes values between [00-FF](lowest to highest)
ex. $sudo setpci -s 00:02.0 F4.B=E0
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