ATI Mobility Radeon LY, 16mb video memory. I could not watch a movie without dropping large amounts of frames and in fullscreen mode, the system was certainly on its knees. Just recompile the kernel with the radeon driver enabled in the kernel or module. Edit /etc/X11/xorg.conf, under the Graphics device section, change the driver to radeon from vesa. Change the video ram to the appropriate amount: the V505AX has 16mb so our number is 16384kb (16 x 1024):

# *****************************************************
# Graphics device section
# *****************************************************
# Any number of graphics device sections may be present
Section "Device"
Identifier "VESA Framebuffer"
Driver "radeon"
VideoRam 16384
# Insert Clocks lines here if appropriate
EndSection GLX gears reports a frame rate of 1120 fps after this change. there is also a utilitity available called radeontool. just compile and copy into your path:

#cp radeontool /usr/local/bin and then

#radeontool to see the options available. for example

#radeontool light off turns off the lcd backlight; useful if you have a vga monitor.