Finally, got back the brightness control in windows 7 on my Vaio CS17

Had a tough time trying to get the brightness control to work after installing windows 7 on my Vaio CS17G, which came with vista originally installed.Every time i pressed the Fn+F5 or Fn+F6 the display bar moved by one block, but there was no change in the brightness. Windows mobility centre didn’t have the brightness option.

Finally got hold of the correct driver upgrade version from the Sony Australia, which did the job. 
Windows 7 Upgrade NVIDIA Graphics Driver Upgrade Version 8.15.11.8640
This program will upgrade NVIDIA Graphics Driver to version 8.15.11.8640.
Although it says that this is applicable only to VGN-CS36GJ, VGN-CS38GD, VGN-CS36TJ, VGN-CS36MJ, VGN-CS37GH, VGN-CS28GD, VGN-CS36SJ, VGN-CS27GJ: it worked without a hitch for me on my Vaio CS17G.

Now i have brightness changing with Fn keys and also on power on/off and i have brightness control from windows mobility centre as well.

Download the driver from here.

AV Mode multimedia key works with natty narwhal on Vaio CS

Hi with the latest upgrades available for natty narwhal, i found to my surprise that the AV Mode multimedia key now works and brings up the rhythmbox music player on press. This is the first time in 2 yrs, since installing ubuntu on this machine, that i have any of the multimedia keys working.

Mind you this is the only key which works at the moment, volume change keys, forward and backward keys and capture button for webcam do not work.
I believe this is the first step in the right direction.

Although the rhythmbox starts with the AV Button, it leaves the machines unresponsive for a minute or so. But the machine recovers on its own....Natty is still alpha1,so hopefully as it matures, will fix the issue of media keys on Vaios....