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Xinerama vs KDE Config Monitor resolution

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http://forums.opensuse.org – Acer Aspire 1410 with LCD 1366 x 768 openSUSE 11.2 KDE 4.3.5 "release 0" Using Applications->System->Configuration->Configure X11 System (which brings up SaX2), I configured a 2nd monitor to have a resolution of LCD 1280 x 768 (WXGA) @ 60 Hz. The second monitor was also configured to be an extended desktop, not a clone. Applications->Configure Desktop->Display does not allow the selection of this resolution, only offering 1024 x 768, 1280 x 1024, and 1280 x 960 as resolutions that are closest to the one I want. How do I get Display to allow my preferred setting of 1280 x 768? Thanks! Relevant sections of /etc/X11/xorg.conf: Section "Monitor" DisplaySize 340 270 HorizSync 29-66 Identifier "Monitor[0]" ModelName "AUO LCD MONITOR" Option "DPMS" Option "PreferredMode" "1366x768" VendorName "AUO" VertRefresh 43-60 UseModes "Modes[0]" EndSection Section "Modes" Identifier "Modes[0]" EndSection Section "Screen" DefaultDepth 24 SubSection "Display" Depth 15 Modes "1366x768" "1360x768" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480" Virtual 3840 1200 EndSubSection SubSection "Display" Depth 16 Modes "1366x768" "1360x768" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480" Virtual 3840 1200 EndSubSection SubSection "Display" Depth 24 Modes "1366x768" "1360x768" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480" Virtual 3840 1200 EndSubSection SubSection "Display" Depth 8 Modes "1366x768" "1360x768" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480" Virtual 3840 1200 EndSubSection Device "Device[0]" Identifier "Screen[0]" Monitor "Monitor[0]" EndSection Section "Device" BoardName "Mobile Intel GM45 Express Chipset" Driver "intel" Identifier "Device[0]" Option "EXANoComposite" Option "SaXDualHead" Option "monitor-VGA" "Monitor[0]" Option "SaXDualMonitorVendor" "--> LCD" Option "SaXDualOrientation" "RightOf" Option "SaXDualResolution" "1280x768" Option "SaXDualMode" "Xinerama" Option "SaXDualHSync" "30-50" Option "SaXDualMonitorModel" "1280X768@60HZ" Option "SaXDualVSync" "50-61" Option "SaXExternal" "Identifier&EXT+DisplaySize&+VendorName&--> LCD+RightOf&Monitor[0]+PreferredMode&1280x768+HorizSync&30-50+ModelName&1280X768@60HZ+VertRefresh&50-61" Option "monitor-LVDS" "EXT" Screen 0 VendorName "Intel" EndSection Section "Monitor" HorizSync 30-50 Identifier "EXT" ModelName "1280X768@60HZ" Option "RightOf" "Monitor[0]" Option "PreferredMode" "1280x768" VendorName "--> LCD" VertRefresh 50-61 EndSection Section "DRI" Group "video" Mode 0660 EndSection Section "Extensions" Option "Composite" "on" EndSection (Distributions)