Hardy multi-monitor configuration with mixed resolutions/rotation on an ATI HD4850

[tomkinsc]

I am having difficulties configuring a multi-monitor setup on Intrepid using the out-of-the-box (or off-the-mirror) proprietary ATI drivers. I am running two monitors, one at 2560x1600, and a secondary at 1680x1050. The secondary monitor is rotated 90 degrees clockwise relative to the user. The graphics card is an ATI HD4850. I currently have the monitors setup to use BigDesktop. This works as I would like (with window dragging between screens, and support for separate panels for each screen), but does not seem to allow for rotation of the secondary screen.
Is there a way to support such a setup, and if so, how?

I'm a very visual person, so I made this image to summarize the problem. (Made with the wonderful open source Inkscape)Image
I made that diagram a while ago, and it is not up to date. I've switched back to 8.04, and am now running fglrx 9.1.

Current xorg.conf:

# xorg.conf (X.Org X Window System server configuration file)
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
	Identifier     "aticonfig Layout"
	Screen      0  "Default Screen" 0 0
EndSection

Section "Files"
EndSection

Section "Module"
	Load  "glx"
EndSection

Section "Monitor"
	Identifier   "Configured Monitor"
EndSection

Section "Device"
	Identifier  "Configured Video Device"
	Driver      "fglrx"
	Option	    "PairModes" "2560x1600+2560x1600,2560x1600+1050x1680"
	BusID       "PCI:3:0:0"
EndSection

Section "Screen"
	Identifier "Default Screen"
	Device     "Configured Video Device"
	Monitor    "Configured Monitor"
	DefaultDepth     24
EndSection

I have never really learned how to get xorg.conf properly configured. I figured this was a question for the gurus of Phoronix, guessing that although the Ubuntu Forums failed to yield an answer someone here might know a way to get things working. Have any ideas?

Thank you for any assistance you can give.

[tomkinsc]

I've now upgraded to fglrx 9.2, and can't seem to get dual monitors to work at all.

I used these commands:

sudo aticonfig –initial=dual-head –screen-layout=left
sudo aticonfig –dtop=horizontal –overlay-on=1
sudo aticonfig –resolution=0,2560x1600,1280×1024,1
sudo aticonfig –resolution=1,1680x1050,1280×1024,1

After login it just reverts to an unresponsive black screen without cursor, prompt, or anything. I can't even use Control+Alt+F# to switch to any other terminals.

[bridgman]

can you delete the amdpcsdb file then run aticonfig initial again ?