So my Radeon HD6320 card is working reasonably now with proprietary catalyst 12.10 driver but I was frustrated by the black borders (about 2cm) around the picture. It seems that the issue is default underscan that the driver imposes. Not sure why.
You can turn it off on the amdcccle from kde desktop and the desktop immediately resizes to fill the screen but there doesn't seem to be any way to make this persistent. Frustrating. Eventually I discovered the following command:
aticonfig --set-dispattrib=dfp2,sizeX:1920 # to set X resolution
aticonfig --set-dispattrib=dfp2,sizey:1080 # to set Y resolution
aticonfig --set-dispattrib=dfp2,positionX:0 # to set X position to 0
aticonfig --set-dispattrib=dfp2,positionY:0 # to set Y position to 0
(where my display adapter is dfp2)
Again, this command immedaitely resizes the image to fill the screen but needs to be run each time you start up or it is lost :-(
So I ended up creating a small script that does the above and calling it from one of the boot up scripts round about where X is being started (will post the hack when I get home later, forget the exact location)
This is obviously not ideal as it isn't part of core linuxmce and the script in question will no doubt be overwritten at some stage when I upgrade.
Any suggestions as to where would be a better place to put this? Or, indeed, a better way to approach the problem?
(This is on my AD04 zotac media director, by the way)
EDIT: I see some references to adding a --effective=startup flag to the aticonfig command to make the change persistent. Will test this afternoon.