radeonhd 2600 xt on ubuntu - stretched desktop problem

[adrian]

I followed the instructions at:

http://www.phoronix.com/scan.php?page=article&item=843&num=1

To install the radeonhd driver for Ubuntu. Installation went fine, and everything seems to work correctly - EXCEPT for one thing: I can't get my monitor's native resolution of 1680x1050 to work properly.

When I set the resolution to 1680x1050, my screen is "stretched" - basically, it looks as though the resolution is more like 2200x1050 (or something) and I am looking at the stuff in the right-hand side. I.e. none of the stuff on the left part of the screen is visible.

1440x900 works fine though, but since this is a widescreen LCD monitor, having it at that resolution is really hard on my eyes, especially for coding.

Can anyone give me any suggestions on how to solve this problem?

Here's my xorg.conf:

Section "Files"
	FontPath	"/usr/share/X11/fonts/misc"
	FontPath	"/usr/share/X11/fonts/cyrillic"
	FontPath	"/usr/share/X11/fonts/100dpi/:unscaled"
	FontPath	"/usr/share/X11/fonts/75dpi/:unscaled"
	FontPath	"/usr/share/X11/fonts/Type1"
	FontPath	"/usr/share/X11/fonts/100dpi"
	FontPath	"/usr/share/X11/fonts/75dpi"
	FontPath	"/usr/share/fonts/X11/misc"
	# path to defoma fonts
	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"macintosh"
	Option		"XkbLayout"	"us"
	Option		"XkbOptions"	"lv3:ralt_switch"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"ZAxisMapping"		"4 5"
EndSection

Section "InputDevice"
	Driver		"wacom"
	Identifier	"stylus"
	Option		"Device"	"/dev/input/wacom"
	Option		"Type"		"stylus"
	Option		"ForceDevice"	"ISDV4"		# Tablet PC ONLY
EndSection

Section "InputDevice"
	Driver		"wacom"
	Identifier	"eraser"
	Option		"Device"	"/dev/input/wacom"
	Option		"Type"		"eraser"
	Option		"ForceDevice"	"ISDV4"		# Tablet PC ONLY
EndSection

Section "InputDevice"
	Driver		"wacom"
	Identifier	"cursor"
	Option		"Device"	"/dev/input/wacom"
	Option		"Type"		"cursor"
	Option		"ForceDevice"	"ISDV4"		# Tablet PC ONLY
EndSection

Section "Device"
	Identifier	"ATI Technologies Inc ATI Default Card"
	Driver		"radeonhd"
	BusID		"PCI:1:0:0"
EndSection

Section "Extensions"
	Option 	"Composite" 	"Off"
EndSection

Section "ServerFlags"
	Option 	"AIGLX" 	"Off"
EndSection

Section "Monitor"
	Identifier	"L226WTX"
	Option		"DPMS"
	HorizSync	28-83
	VertRefresh	60
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"ATI Technologies Inc ATI Default Card"
	Monitor		"L226WTX"
	DefaultDepth	24
	SubSection "Display"
		Modes		"1680x1050@60" "800x600@60" "640x480@60"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"

# Uncomment if you have a wacom tablet
#	InputDevice     "stylus"	"SendCoreEvents"
#	InputDevice     "cursor"	"SendCoreEvents"
#	InputDevice     "eraser"	"SendCoreEvents"
EndSection

Any assistance would be greatly appreciated - I don't care about 3D, or desktop effects, or anything like that - I just want to be able to work in 1680x1050!

[adrian]

Well, I'm up and running with the latest Catalyst drivers and things are working great - back to 1680x1050 - whew!