I'm using Ubuntu 11.10 without the proprietary driver for ATI video cards and I like very much the performance.
My only need is activate power saving when I use the laptop with the battery. Thanks
From this blog
You have two options, both involve editing
Add these lines:
Add these lines to the file
Save the script and make it executable
See the blog for additional details.
You need to execute this command after making the script executable:
It creates the links in /etc/rc?.d required to have it executed at startup.