Refresh rates on dual monitor/big desktop setup

[Noam Mor]

Hi,

My old Radeon 9800 died a couple of days ago, so i bought a Radeon HD3650 in its stead. I got most things working, somehow.

However I still have some problems with my refresh rate in the secondary display of the dual monitor setup... I have two LCDs, the primary is plugged in to a DVI port and the other to a VGA one. The problem is that the secondary display (older, smaller monitor) runs at a refresh rate of 75Hz and consequently it is quite blurry. I need to find a way to make it work at 60Hz again.

I fumbled around with xorg.conf and with the Catalyst Control Center and even tried KDE's System Settings, but none worked.

Here's xorg.conf. I'm well aware that it's as far as possible from being well written, with several autoconf tools writing to it from a time to time and with me editing it without knowing how to...

Section "ServerLayout"
	Identifier     "Default Layout"
	Screen         "Default Screen" 0 0
	InputDevice    "Generic Keyboard"
	InputDevice    "Configured Mouse"
EndSection

Section "Files"

	# path to defoma fonts
	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"
	FontPath     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
	Load  "bitmap"
	Load  "ddc"
	Load  "dri"
	Load  "extmod"
	Load  "freetype"
	Load  "glx"
	Load  "int10"
	Load  "type1"
	Load  "vbe"
EndSection

Section "InputDevice"
	Identifier  "Generic Keyboard"
	Driver      "kbd"
	Option	    "CoreKeyboard"
	Option	    "XkbRules" "xorg"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "us,il"
#	Option	    "XkbOptions" "lv3:ralt_switch"
	Option	    "XkbOptions" "grp:alt_shift_toggle,grp_led:scroll"
EndSection

Section "InputDevice"
	Identifier  "Configured Mouse"
	Driver      "mouse"
	Option	    "CorePointer"
	Option	    "Device" "/dev/input/mice"
	Option	    "Protocol" "ExplorerPS/2"
	Option	    "ZAxisMapping" "4 5"
	Option	    "Emulate3Buttons" "true"
EndSection



Section "Monitor"
	Identifier   "LG L1932TQ"
	HorizSync    30.0 - 83.0
#	VertRefresh  56.0 - 75.0
	VertRefresh  56.0 - 60.0
	Option	    "DPMS"
EndSection

Section "Monitor"
	Identifier   "L1706"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "L1706"
	HorizSync    30.0 - 83.0
	VertRefresh  50.0 - 60.0
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "ATI RADEON 9800"
	Driver      "fglrx"
	Option	    "UseFBDev" "true"
	Option	    "DesktopSetup" "horizontal"
	Option	    "OverlayOnCRTC2" "1"
	Option	    "Mode2" "1600x1200,1280x1024,1152x864,1024x768,800x60"
	Option	    "VideoOverlay" "on"
	Option	    "OpenGLOverlay" "off"
	BusID       "PCI:1:0:0"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[1]"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
	Screen      1
EndSection

Section "Screen"
	Identifier "Default Screen"
	Device     "ATI RADEON 9800"
	Monitor    "LG L1932TQ"
	DefaultDepth     24
	SubSection "Display"
		Depth     1
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     4
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     8
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     15
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     16
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     24
		Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[1]"
	Device     "aticonfig-Device[1]"
	Monitor    "aticonfig-Monitor[1]"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "DRI"
	Mode         0666
EndSection

Section "Extensions"
	Option	    "Composite" "Disable"
EndSection

I am using the latest fglrx (manually installed from AMD's website), on the latest Ubuntu.

Here is the information on the secondary monitor, from the CCC:
Display Name: 2. HP L1706
Graphics Adapter: ATI radeon etc.
Maximum resolution: 1280 x 1024
Maximum Refresh Rate: 75Hz
Connector: VGA

Could you provide some guidance? Thanks!