[mythtv-users] Setting EDID for a TV or is it an Xorg.conf problem

Steve V olivuts at yahoo.com
Fri Jun 12 09:38:33 UTC 2009

----- Original Message ----
> From: Steve V <olivuts at yahoo.com>
> To: Discussion about mythtv <mythtv-users at mythtv.org>
> Sent: Friday, 12 June, 2009 7:44:18 PM
> Subject: Re: [mythtv-users] Setting EDID for a TV
> ----- Original Message ----
> > From: Raymond Wagner 
> > To: Discussion about mythtv 
> > Sent: Friday, 12 June, 2009 11:23:20 AM
> > Subject: Re: [mythtv-users] Setting EDID for a TV
> > 
> > Steven Adeff wrote:
> > > One thing I did was to save the EDID.bin file to the PC and have the
> > > nvidia driver load that EDID instead of trying to obtain it from the
> > > TV. 
> > Instructions are all here...
> > 
> http://www.mythtv.org/wiki/Nvidia-cards_and_no_picture_when_box_is_on_before_the_TV
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> Thanks I tried the 'nvidia-settings' method and that created an edid.bin file (a 
> 256b file which appears to be in Hex) I then modified my xorg.conf file as 
> described in the link. Still no good. Actually now I only get a messed up 
> picture on startup even if the TV is on first. the only way that works is to 
> wait until the PC has fully started then ctrl alt bkspce to get the login 
> screen, once I log in my display is great.
> If I tried /etc/init.d/gdm stop then startx -- -logverbose 6 but X starts with 
> the display messed up each time.
> Am I correct in saying if X starts up bad the edid will be wrong therefore no 
> ppoint in capturing that EDID?
> It seems pretty consistent that if I ctrl alt bkspce and tehn leave it to auto 
> log in (which it does after 30 seconds) the display is fine. Should I create a 
> script which runs ctrl alt bkspce after the PC has started? Any ideas how to do 
> this?
After some more testing and some thinking, I believe I have misdiagnosed this as an edid issue whereas it may more likely be an Xorg.conf issue.

my Xorg.conf is below -can I edit this to something simpler that is guaranteed to work as long as teh TV is on before the PC? 

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister at builder57)  Thu Apr 16 17:18:41 PDT 2009

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"

Section "Files"

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       31.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
#    option "CustomEDID" "FP-0:/home/steve/edid.bin"
#    option "ModeValidation" "NoDFPNativeResolutionCheck"
#    option "UseDisplayDevice" "DFP-0"
#    option "ConnectedMonitor" "DFP-0"

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24


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