Dell Inspiron 1521/xorg.conf
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Section "ServerFlags" Option "AutoAddDevices" "False" Option "AutoEnableDevices" "false" EndSection
Without this my keyboard and mouse didn't work. There is a problem with evdev. This Section disable the mouse-/keyboard-configuration with evdev.
Section "ServerLayout" Identifier "X.org Configured" Screen 0 "Screen0" 0 0 InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection
Section "Files" ModulePath "/usr/lib/xorg/modules" FontPath "/usr/share/fonts/misc" FontPath "/usr/share/fonts/100dpi:unscaled" FontPath "/usr/share/fonts/75dpi:unscaled" FontPath "/usr/share/fonts/TTF" FontPath "/usr/share/fonts/Type1" EndSection
Section "Module" Load "dbe" Load "glx" Load "xtrap" Load "extmod" Load "dri" Load "freetype" EndSection
Section "InputDevice" Identifier "Keyboard0" Driver "kbd" Option "XkbLayout" "ch" EndSection
Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5 6 7" EndSection
Section "Monitor" #DisplaySize 330 210 # mm Identifier "Monitor0" VendorName "LPL" ModelName "df00" HorizSync 30.0 - 130.0 VertRefresh 50.0 - 100.0 EndSection
After the xorg.conf generation. I added the HorizSync and the VertRefresh.
Section "Device" Identifier "Card0" Driver "radeon" VendorName "ATI Technologies Inc" BoardName "RS690M [Radeon X1200 Series]" BusID "PCI:1:5:0" EndSection
Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 1 EndSubSection SubSection "Display" Viewport 0 0 Depth 4 EndSubSection SubSection "Display" Viewport 0 0 Depth 8 EndSubSection SubSection "Display" Viewport 0 0 Depth 15 EndSubSection SubSection "Display" Viewport 0 0 Depth 16 EndSubSection SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection