Configuring open-source driver for Radeon HD 6520G

Hi, here's my /etc/X11/xorg.conf.d/20-radeon.conf file:

Section "Device"
    Identifier "Radeon"
    Driver "radeon"
    Option "ColorTiling2D" "false"
    Option "ZaphodHeads"   "VGA-0"
EndSection

Explanations:

• ColorTiling2D -- not supported for this certain card, and thus has to be disabled. I was told about that on the freedesktop.org bugtracker.. After many unsuccessful attempts to start Xorg at all.
• ZaphodHeads -- you need this line if you want dual-head with the second display attached via VGA. If you attach second display to HDMI -- the option is probably not needed here. See ATI#Dual_Head_setup does not actually work, so you can omit this line.

Also, you have to add radeon.dpm=1 to the kernel parameters. Without that (and before this option became available at all), I simply couldn't use the radeon driver -- the notebook got hotter and hotter every minute and then turned off. See ATI#Dynamic_power_management