[mythtv-users] Can't read edid all of the sudden

Yan Seiner yan at seiner.com
Thu Mar 11 02:02:29 UTC 2010


George Mari wrote:
> On 03/10/2010 07:44 PM, Yan Seiner wrote:
>> Something broke....  My Sharp Aquos can't provide a valid edid to the
>> nvidia driver:
>>
>> [ 1997.349] (WW) Mar 10 17:33:53 NVIDIA(GPU-0): The EDID read for
>> display device DFP-0 is invalid:
>> [ 1997.349] (WW) Mar 10 17:33:53 NVIDIA(GPU-0): unrecognized EDID 
>> Header.
>> [ 1997.350] (II) Mar 10 17:33:53 NVIDIA(0): NVIDIA GPU GeForce 9500 GT
>> (G96) at PCI:2:0:0 (GPU-0)
>> [ 1997.350] (--) Mar 10 17:33:53 NVIDIA(0): Memory: 524288 kBytes
>> [ 1997.350] (--) Mar 10 17:33:53 NVIDIA(0): VideoBIOS: 62.94.4b.00.51
>> [ 1997.350] (II) Mar 10 17:33:53 NVIDIA(0): Detected PCI Express Link
>> width: 8X
>> [ 1997.350] (--) Mar 10 17:33:53 NVIDIA(0): Interlaced video modes are
>> supported on this GPU
>> [ 1997.350] (--) Mar 10 17:33:53 NVIDIA(0): Connected display device(s)
>> on GeForce 9500 GT at PCI:2:0:0:
>> [ 1997.350] (--) Mar 10 17:33:53 NVIDIA(0): DFP-0
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0): DFP-0: 330.0 MHz maximum
>> pixel clock
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0): DFP-0: Internal Dual Link 
>> TMDS
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0):
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0): --- EDID for DFP-0 ---
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0):
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0): No EDID Available.
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0):
>> [ 1997.351] (--) Mar 10 17:33:53 NVIDIA(0): --- End of EDID for DFP-0 
>> ---
>>
>> A few days ago, in the middle of a movie, the TV went blank. Backlight
>> was on, but the picture was totally black. I restarted the X server and
>> everything was fine.
>>
>> Now it's happened again, except that the panel comes up in the default
>> 640x480 mode. No EDID information. This system has worked fine since the
>> last major sofware upggrade on February 10th, and nothing has changed,
>> so I'm pretty confident that it's not an errant software upgrade. The
>> hardware has been unchanged for a year or so.
>>
>> Could be a) the TV itself is dying (I'd hate for that to be true) or b)
>> the video card is dying (much cheaper) but before I start hacking away
>> at hardware I'd like to get some opinions on what could possibly be
>> causing the EDID to fail suddenly.
>>
>
> How about a loose cable?
Just reseated all the cables and restarted X; no joy.

:-(

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