Ubuntu10.10麦克风没声音（ALC892芯片）

代码:

# Xorg configuration created by system-config-display

Section "ServerLayout"
   Identifier     "single head configuration"
   Screen      0  "Screen0" 0 0
   InputDevice    "Keyboard0" "CoreKeyboard"
   InputDevice    "Synaptics" "CorePointer"
EndSection

Section "InputDevice"
   Identifier  "Keyboard0"
   Driver      "kbd"
   Option       "XkbModel" "pc105"
   Option       "XkbLayout" "us"
EndSection

Section "InputDevice"
   Identifier  "Synaptics"
   Driver      "synaptics"
   Option       "Device" "/dev/input/mice"
   Option       "Protocol" "auto-dev"
   Option       "Emulate3Buttons" "yes"
EndSection

Section "Device"
   Identifier  "Videocard0"
   Driver      "intel"
   #Option       "Clone" "true"   
   Option       "Clone" "1024x768"
   Option       "MonitorLayout" "CRT,LFP"
EndSection

Section "Screen"
   Identifier "Screen0"
   Device     "Videocard0"
   DefaultDepth     24
   SubSection "Display"
      Viewport   0 0
      Depth     24
      Modes    "1024x600"
   EndSubSection
EndSection