On Sat, Feb 13, 2010 at 1:35 PM, Kyle Lil <[email protected]> wrote: > The hard drive is being accessed pretty frequently (~1/second) when watching > tv with mythtv, much more often than the errors are appearing. So, the hard > drive cannot reliably produce the errors. Interestingly, I think the errors > seem to occur slightly more often when watching tv with myth than when just > monitoring the signal with azap. Would azap catch all errors or does it just > sparsely sample the signal? > The optical drive is not spinning up and the graphics card is fanless. The > only other significant EMI sources inside the computer that I can think of > are the case fan, cpu fan, and maybe the power supply. I can play around > with different ground configurations to see if that helps.
Kyle, Just to be clear, the BER/UNC counters count the number of errors *only* between the tuner and demodulator. These are errors where the Reed-Solomon error correction built into the signal could not compensate (essentially errors in the analog signal transmission). I'm pointing this out to make clear that those counters do not track any *other* possible class of problem, such as packets being lost in the cx18 driver, the application's failure to read the packets from the driver fast enough (resulting in the packets being dropped by the driver), or problems writing the MPEG frames to the hard disk, etc. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
