** Description changed:

  Using Ubuntu on Sony Vaio laptop with Nvidia 8 vga card:
  
  There is no way to control backlight brightness on Sony Vaios with 8-series 
adapters, e.g.
  nVidia Corporation GeForce 8400M GS
  nVidia Corporation GeForce 8600M GT (rev a1)
  
  The registers have been found (kudos to mikes!) and incorporated into
  nvclock, which you can check out by anonymous cvs and install:
  
  ]$ sudo apt-get install cvs
  ]$ cvs -d:pserver:[EMAIL PROTECTED]:/cvsroot/nvclock login
  ]$ cvs -z3 -d:pserver:[EMAIL PROTECTED]:/cvsroot/nvclock co -P nvclock
  ]$ cd nvclock
  ]$ ./autogen.sh
  ]$ ./configure
  ]$ make
  ]$ sudo make install
  
  To test, make sure you are using nVidia's proprietary driver, then:
  ]$ sudo nvclock -S 100
  ]$ sudo nvclock -S 15
  ]$ sudo nvclock -S +10
  
  So far mikes' registers have been found to work on:
- 8400M GS on VGN SZ650N, SZ61MN/B, SZ730E, SZ750N, SZ71MN/B, SZ71E
- 8400M GT on VGN FZ38M, FZ31M, FZ11Z, NR31, AR41E, FZ11S, FZ290, FZ250AE, 
FZ21E, FZ21M, FZ470E, FZ340E, FZ190N, FZ18M, FZ31E
- 8600M GS on VGN FZ31Z, FZ21Z
- 8600M GT on VGN AR51SU, AR71S
+ 
+ 8400M GS:
+ VGN SZ650N, SZ61MN/B, SZ730E, SZ750N, SZ71MN/B, SZ71E
+ 
+ 8400M GT:
+ VGN FZ38M, FZ31M, FZ11Z, NR31, AR41E, FZ11S, FZ290, FZ250AE, FZ21E, FZ21M, 
FZ470E, FZ340E, FZ190N, FZ18M, FZ31E
+ 
+ 8600M GS:
+ VGN FZ31Z, FZ21Z
+ 
+ 8600M GT:
+ VGN AR51SU, AR71S
  
  Add your model to the list by clicking on the "Update description /
  tags" link, NOT by asking in a bug comment for someone else to do it.
  
  To get hotkeys to work, follow the instructions in this comment:
  https://bugs.launchpad.net/ubuntu/+source/hotkey-setup/+bug/95444/comments/75
  
  Dual-adapter models (SZ6 among others) can get backlight control with
  the Intel adapter using xbacklight, and can get hotkey functionality as
  per bug #173652.

-- 
No Screen Backlight Control; Sony Vaio with nvidia 8 series graphics
https://bugs.launchpad.net/bugs/95444
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