change resolution problem

**wakatana** · 10-04-2009

Hi gurus I have notebook with connected external monitor. output of my xrandr looks like

Code:

Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 2960 x 1050
VGA connected 1680x1050+1280+0 (normal left inverted right x axis y axis) 478mm x 300mm
   1680x1050      60.0*+
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     66.7     59.9  
   720x400        70.1  
LVDS connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
   1280x800       60.0*+
TV disconnected (normal left inverted right x axis y axis)

xorg.conf

Code:

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	#Option		"Xinerama" "true"	# toto zakomentovat ak nepojde
EndSection

Section "ServerFlags"
	Option       "DontZap" "false" #aktivacia ctrl alt backspace
EndSection

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

Section "Module"
	Load  "dri2"
	Load  "record"
	Load  "dbe"
	Load  "extmod"
	Load  "glx"	#toto bolo tu defaultne, malo by to zvisit vykon podla cvut
	Load  "dri"	#bolo defaultne malo by zvysit vykon podla cvut
	Load  "GLcore"	#dopisoval som na zvisenie vykonu podla cvut
EndSection

Section "DRI"
	Mode 0666
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "LVDS"
	VendorName   "FujitsuSiemens"
	ModelName    "Monitor Model"
	Option "Enable" "false"
EndSection

Section "Monitor"
	Identifier   "VGA"
	VendorName   "IIYAMA"
	ModelName    "Monitor Model"
	Option "RightOf" "LVDS"
	Option "Enable" "false"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	Option "Enable" "true"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "NoAccel"            	# [<bool>]
        #Option     "SWcursor"           	# [<bool>]
        #Option     "ColorKey"           	# <i>
        #Option     "CacheLines"         	# <i>
        #Option     "Dac6Bit"            	# [<bool>]
        #Option     "DRI"                	# [<bool>]
        #Option     "NoDDC"              	# [<bool>]
        #Option     "ShowCache"          	# [<bool>]
        #Option     "XvMCSurfaces"       	# <i>
        #Option     "PageFlip"           	# [<bool>]
	Identifier  "Card0"
	Driver      "intel"
	VendorName  "Intel Corporation"
	BoardName   "Mobile 915GM/GMS/910GML Express Graphics Controller"
	BusID       "PCI:0:2:0"
	Option      "AccelMethod" "xaa"		#vykon tuxradar
	#Option      "MigrationHeuristic" "greedy"	#vykon tuxradae
	#Option      "TripleBuffer" "true"		#vykon tuxradar
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Viewport   0 0
		Depth     1
		Virtual    2960 1050
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
		Virtual    2960 1050
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
		Virtual    2960 1050
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
		Virtual    2960 1050
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Virtual    2960 1050
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Virtual    2960 1050
	EndSubSection
EndSection

lspci | grep VGA

Code:

00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)

How can I change notebook (LVDS) resolution to 1024x768 and why Is not this resolution supported ???
So far i tried

Code:

xrandr --output LVDS -s 1024x768

but it just turn of/on external monitor and nothing happens. Also tried

Code:

xrandr --newmode "1024x768" 63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync

with the same effect and getting error "BadName (named color or font does not exist)"

I am running xubuntu thank you

**wakatana** · 10-04-2009

Hi I discovered new things... also if I want change resolution on external monitor did not work with

Code:

xrandr --output VGA -s 1024x768

. when I tried add new mode with

Code:

xrandr --addmode LVDS 1024x768

seems OK (i saw it on xrandr output) but if I type

Code:

xrandr --output LVDS -s 1024x768

to switch to it, nothing happens. Also tried

Code:

xrandr --output LVDS --fb 1024x768

but that turned off my external monitor and screwed notebook monitor, so I have to type

Code:

xrandr --output VGA --off --output LVDS --auto

. And everything seems slower. Something must be wrong flash videos is laging and graphic seems too slow. I have read everything that i found about dualhead and resolution but i am confused. I am very disapointed and I dont know what else to do ? Please help

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