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

[Yan Seiner]

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.

-- 

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when we forsake our friends and break all (_)\(_)
bonds of fellowship, but it is not this day.
It is not this day!
This day we ride!