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Asus AT37N7A-I Nvidia ION Linux Configuration

I've been using this excellent motherboard for about 2 years, it has now been disassembled as I had less of a need for a silent PC in the living room after retiring my use of MythTV.

 I had Ubuntu installed on this PC and during its lifetime was subjected to many performance tweaks. Rather than delete this work, I've decided to put the files online for other people to use.


I wanted digital sound over the HDMI cable so it can be played by either my TV or AV amp; I've played back DTS HD with this configuration, my TV had issues with some sample rates which is why the rate is configured explicitly.


pcm.!default front

pcm.analog-hw {
  type hw
  card 0
  device 0

pcm.analog-hw-formatted {
  type plug
  slave {
    pcm analog-hw
    rate 48000
} {
  type hw
  card 0
  device 3
} {
  type plug 
  slave {
    pcm digital-hw
    rate 48000

pcm.hdmi_softvol {
  type softvol
  slave.pcm digital-hw-formatted hdmi_volume
  control.card 0


These are my xorg.conf settings for use with my Sharp Aquos 32" TV, this has been optimised for use with MythTV specifically playback of 1080p playback at 50Hz, 60Hz and 24Hz.


Section "ServerLayout"
    Identifier     "Default Layout"
    Screen         "Default Screen" 0 0

Section "Monitor"
    #Sharp AQUOS Screen Dimension: 701mm x 394mm
    Identifier     "Television"
    VendorName     "Sharp"
    ModelName      "LC32LE600E"
    DisplaySize     701    394

Section "Device"
    Identifier     "ION-HDMI"
    Driver         "nvidia"
    Option         "NoLogo"                    "true"
    # If not disabled I can't select 24Hz or 60Hz refresh rates
    Option         "DynamicTwinView"           "false"
    Option         "NoFlip"                    "false"
    Option         "FlatPanelProperties"       "Scaling = Native"
    Option         "ModeValidation"            "NoVesaModes, NoXServerModes, NoPredefinedModes"
    Option         "ModeDebug"                 "true"
    # Options for MythTV performance
    Option         "TripleBuffer"              "True"
    Option         "UseEvents"                 "True"
    Option         "HWCursor"                  "False"
    # Removes non selected modes
    Option         "IncludeImplicitMetaModes"  "false"
    Option         "ExactModeTimingsDVI"       "True"
    Option         "DPI"                       "100 x 100"

Section "Screen"
    Identifier     "Default Screen"
    Device         "ION-HDMI"
    Monitor        "Television"
    DefaultDepth   24
    SubSection     "Display"
        Viewport    0 0
        Depth       24
        Modes      "1920x1080_50" "1920x1080_24_0" "1920x1080_60_0"

Section "Extensions"
    Option         "Composite"                 "Disable"


On startup, nvidia-settings is called with the following parameters:

nvidia-settings -a "SyncToVBlank=1" -a "AllowFlipping=1" -a "FSAAAppControlled=1" -a "OpenGLImageSettings=3" -a "LogAniso=0" -a "GPUScaling[DFP-0]=1,1"; nvidia-settings -r


Here are the mplayer-config settings for smooth playback using the GPU:



There is extensive documentation on the MythTV wiki so I won't repeat that here, for reference though:


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