[Bug 95444] Re: No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq, Samsung, Zepto et al.) with Nvidia Geforce8/Geforce9/Quadro series graphics

[asino89]

I'll better explain my troubles.

When I try to use nvclock (eg I launch "sudo nvclock -S 50") i get a "Segmentation fault".
I'm sure this problem came out after the updates to my nvidia graphic card drivers, that I did (through update manager) on 2012-04-12.

I've tried even drivers #173, but it isn't working all the same.

I've tried to reinstall nvclock (even on a brand new installation of
ubuntu), but when I launch "make" i get an error like this: "undefined
reference to `XextFindDisplay'".

I have no ideas of why this is happening!
Any help will be appreciated!

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https://bugs.launchpad.net/bugs/95444

Title:
  No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq,
  Samsung, Zepto et al.)  with Nvidia Geforce8/Geforce9/Quadro series
  graphics

Status in Hardware Abstraction Layer (HAL):
  Invalid
Status in “acpi-support” package in Ubuntu:
  Invalid
Status in “hal” package in Ubuntu:
  Invalid
Status in “hotkey-setup” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Invalid
Status in “nvclock” package in Ubuntu:
  Fix Released
Status in “nvidia-graphics-drivers-180” package in Ubuntu:
  Invalid

Bug description:
  Using Ubuntu on laptops with Nvidia Geforce8/Geforce9/Quadro vga card:

  On various laptops from Sony, HP, Samsung and others there is no way to control backlight brightness. In case of Sony e.g. on 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:anonymous at nvclock.cvs.sourceforge.net:/cvsroot/nvclock login
  ]$ cvs -z3 -d:pserver:anonymous at nvclock.cvs.sourceforge.net:/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:

  Apple laptops
  {
  Macbook 5,1 Aluminum 13.3"  (Geforce 9400M)
  }

  HP/Compaq laptops
  {
  8510W (Quadro FX 570M, MXM)
  8710P (Quadro NVS 320M, MXM)
  }

  Samsung laptops:
  {
  Q210 (Geforce 9200M)
  Q310 (Geforce 9200M)
  R510 (Geforce 9200M)
  }

  Sony laptops:
  {
  8400M GS:
  VGN SZ650N, SZ61MN/B, SZ730E, SZ750N, SZ71MN/B, SZ71E SZ95S, SZ6RMN

  8400M GT:
  VGN FZ38M, FZ31M, FZ11Z, NR31, AR41E, FZ11S, FZ290, FZ250AE, FZ21E, FZ21M, FZ21S, FZ470E, FZ340E, FZ190N, FZ18M, FZ31E, FZ18E, FZ260E NR21Z, NR38S, NR21S,FZ280E

  8600M GS:
  VGN FZ31Z, FZ21Z, FZ31S

  8600M GT:
  VGN AR51SU, AR71S
  }

  Zepto laptops
  {
  Geforce 9600GT based laptops using MXM cards
  }

  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
  or install the package at :
  https://bugs.launchpad.net/ubuntu/+source/hotkey-setup/+bug/95444/comments/111

  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.

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