[mythtv-users] Help getting HDMI to work for mythfrontend

[Chris Porter]

On Tue, Nov 30, 2010 at 2:30 PM, Alessandro <alessandro.campobassi at gmail.com
> wrote:

> > On 11/30/2010 10:25 AM, Kevin Ross wrote:
> >Try uncommenting the Modeline, and change the Modes option to
> "1440x900_60.0" instead of just "1440x900".
> >The name given after Modes should match the name given after Modeline.
> > Sorry, make that "1440x900_60.00".
>
> Hi - thanks for the tip. Unfortunately even now I have done that, same
> issue - only 640 x 480 appearing :(
> Are the options I have for the modeline not correct?
>
> (II) Module "ramdac" already built-in
> (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
> (==) NVIDIA(0): RGB weight 888
> (==) NVIDIA(0): Default visual is TrueColor
> (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
> (**) NVIDIA(0): Option "UseEDID" "False"
> (**) NVIDIA(0): Option "TwinView" "0"
> (**) NVIDIA(0): Option "DPI" "96 x 96"
> (**) Nov 30 22:22:39 NVIDIA(0): Enabling RENDER acceleration
> (**) Nov 30 22:22:39 NVIDIA(0): Ignoring EDIDs
> (II) Nov 30 22:22:39 NVIDIA(0): Support for GLX with the Damage and
> Composite X
> extensions is
> (II) Nov 30 22:22:39 NVIDIA(0):     enabled.
> (II) Nov 30 22:22:40 NVIDIA(GPU-0): Not probing EDID on DFP-0.
> (II) Nov 30 22:22:40 NVIDIA(0): NVIDIA GPU ION (C79) at PCI:3:0:0 (GPU-0)
> (--) Nov 30 22:22:40 NVIDIA(0): Memory: 524288 kBytes
> (--) Nov 30 22:22:40 NVIDIA(0): VideoBIOS: 62.79.6c.00.01
> (--) Nov 30 22:22:40 NVIDIA(0): Interlaced video modes are supported on
> this GPU
> (--) Nov 30 22:22:40 NVIDIA(0): Connected display device(s) on ION at
> PCI:3:0:0:
> (--) Nov 30 22:22:40 NVIDIA(0):     DFP-0
> (--) Nov 30 22:22:40 NVIDIA(0): DFP-0: 165.0 MHz maximum pixel clock
> (--) Nov 30 22:22:40 NVIDIA(0): DFP-0: Internal Single Link TMDS
> (II) Nov 30 22:22:40 NVIDIA(0): Assigned Display Device: DFP-0
> (WW) Nov 30 22:22:40 NVIDIA(0): No valid modes for "1440x900_60.00";
> removing.
> (WW) Nov 30 22:22:40 NVIDIA(0):
> (WW) Nov 30 22:22:40 NVIDIA(0): Unable to validate any modes; falling
> back to the default mode
> (WW) Nov 30 22:22:40 NVIDIA(0):     "nvidia-auto-select".
> (WW) Nov 30 22:22:40 NVIDIA(0):
> (II) Nov 30 22:22:40 NVIDIA(0): Validated modes:
> (II) Nov 30 22:22:40 NVIDIA(0):     "nvidia-auto-select"
> (II) Nov 30 22:22:40 NVIDIA(0): Virtual screen size determined to be 640 x
> 480
> (**) Nov 30 22:22:40 NVIDIA(0): DPI set to (96, 96); computed from
> "DPI" X config option
> <snip>
> (II) Nov 30 22:22:43 NVIDIA(0): Setting mode "640x480_73"
>
> I'm not very clued-up in all of this, been trying for 3 weeks to get it
> working.
> It works (HDMI output to the TV) if I use the standard mythbuntu
> driver (not the NVIDIA driver) - but that defeats the purpose of this
> setup - using the graphics hardware acceleration for HD playback! :(
>
> Thanks again folks
> Alessandro
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>

use nvidia-settings to export the EDID information to be used with the
CustomEDID option. Make sure you have the TV on before booting up into X.
Then in /etc/X11/xorg.conf add the following lines to the Device section.

    Option         "CustomEDID"         "DFP-0:/etc/X11/tv-edid.bin"
#Force a custom EDID.
    Option         "UseDisplayDevice"   "DFP-0"
    Option         "ConnectedMonitor"   "DFP-0"
    Option        "ModeDebug"          "True"  #This will turn up logging in
the /var/log/Xorg.0.log file.

You should generally be able to find what modes your TV says it supports in
this log. Again make sure the TV is on before turning on the system. Using
the CustomEDID option will allow X to configure itself properly even if the
TV is off.

I suggest getting rid of any mode lines by commenting them out. Then add the
following to the modes part of the Screen section.

Modes      "1440x900_60"

This page shows how modes are validated.

http://us.download.nvidia.com/XFree86/Linux-x86/260.19.21/README/programmingmodes.html


the correct modes definition is as listed above.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mythtv.org/pipermail/mythtv-users/attachments/20101130/a5a7ee1c/attachment-0001.htm>