Ja, da stimm ich mal Diarrhoe in allen Punkten zu.
Zu deinem Problem: Es ist kein Wunder dass dein Monitor nicht geht, er taucht ja nichtmal in der xorg.conf auf. Hier mal meine xorg.conf als Beispiel:
# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# 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 "Default Layout"
Screen "Default Screen" 0 0
Screen "aticonfig-Screen[1]" RightOf "Default Screen"
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 "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "type1"
Load "vbe"
EndSection
Section "ServerFlags"
Option "AIGLX" "off"
EndSection
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "de"
Option "XkbVariant" "neo"
Option "XkbOptions" "lv3:ralt_switch"
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 "PHILIPS 107E"
Option "DPMS"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[1]"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Device"
Identifier "ATI Technologies, Inc. Radeon Mobility X700 (RV410)"
Driver "fglrx"
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 Technologies, Inc. Radeon Mobility X700 (RV410)"
Monitor "PHILIPS 107E"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 4
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 8
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 15
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 16
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 24
Modes "1400x1050" "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
EndSection
Section "Screen"
Identifier "aticonfig-Screen[1]"
Device "aticonfig-Device[1]"
Monitor "aticonfig-Monitor[1]"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
Section "Extensions"
Option "Composite" "Disable"
EndSection
Beachte hierbei, dass die Monitor, Device und Screen-Sektionen alle doppelt vorkommen, und die jeweils an den Bildschirm angepasst sind. Probier aber bloß nicht aus das einfach zu kopieren, das wird nicht klappen!
PS: Bist du sicher dass dein externer Monitor diese hohe Auflösung überhaupt unterstützt?
