[mythtvnz] IR Blaster set up and HDMI

[Steven Ellis]

On Mon, October 29, 2007 9:29 am, Craig Whitmore wrote:
>> I have another mythbox I maintain for a friend. He's just bought a Sony
>> Bravia rear projection TV and we've been trying to get DVI - HDMI
>> working. Xorg doesn't seem to be picking up an EDID from the TV. I just
>> read recently that HDMI 1.0 through to 1.2 doesn't support EDIDs. I
>> can't even get an out of sync image up on the screen. Could someone who
>> has DVI - HDMI with custom modelines for 720p and 1080i please send me a
>> copy of their xorg.conf?
>
> If you have a NVIDIA video card and the latest drivers then it quite easy.
> I
> have a 50inch Sony 3LCD TV and all I use is:
>
> Modes      "1280x720_50"  which is built in Display Mode for NVIDIA
> drivers.
>
> (II) NVIDIA(0): NVIDIA GPU GeForce 6150 (C51) at PCI:0:5:0 (GPU-0)
> (--) NVIDIA(0): Memory: 524288 kBytes
> (--) NVIDIA(0): VideoBIOS: 05.51.22.33.07
> (--) NVIDIA(0): Interlaced video modes are supported on this GPU
> (--) NVIDIA(0): Connected display device(s) on GeForce 6150 at PCI:0:5:0:
> (--) NVIDIA(0):     SONY TV (DFP-0)
> (--) NVIDIA(0): SONY TV (DFP-0): 310.0 MHz maximum pixel clock
> (--) NVIDIA(0): SONY TV (DFP-0): Internal Dual Link TMDS
> (II) NVIDIA(0): Assigned Display Device: DFP-0
> (II) NVIDIA(0): Validated modes:
> (II) NVIDIA(0):     "1280x720_50"
> (II) NVIDIA(0): Virtual screen size determined to be 1280 x 720
>
>
> If you want to make your own.. try
> http://www.mythtv.org/wiki/index.php/Modeline_Database#NVIDIA_Driver_ModePool

First try starting X in full verbose mode to confirm the lack of EDID.

startx -- -logverbose 6

Then look in the X log file and you should see the EDID data. I've got
lots of customers with DVI->HDMI cables and if there is an issue getting
EDID it usualy means a faulty cable.

One thing to watch for is some screens lie about their EDID data, for
example only providing 60Hz modelines.

Steve


--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
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