On 5/2/07, Brian Walter <[EMAIL PROTECTED]> wrote: > Greetings, > > I'm working on getting the last few issues cleaned up with a MythTV > setup. One of the issues I have, is that whenever I access the first > tuner on my PVR-500, I get a series of DMA warnings/errors: > > May 1 00:06:08 mythtvserver1 kernel: ivtv1 warning: ENC DMA ERROR b > May 1 00:06:08 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 0 -> 128 > May 1 00:06:08 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 128 -> 104 > May 1 00:06:10 mythtvserver1 kernel: ivtv1 warning: ENC DMA ERROR b > May 1 00:06:10 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 104 -> 128 > May 1 00:06:10 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 128 -> 36 > May 1 00:06:15 mythtvserver1 kernel: ivtv1 warning: ENC DMA ERROR b > May 1 00:06:15 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 36 -> 128 > May 1 00:06:15 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 128 -> 0 > May 1 00:06:22 mythtvserver1 kernel: ivtv1 warning: ENC DMA ERROR b > May 1 00:06:22 mythtvserver1 kernel: ivtv1 warning: encoder MPEG: > offset 0 -> 128 > May 1 00:06:22 mythtvserver1 kernel: ivtv1: DMA TIMEOUT 00000001 0 > > Now, the above seems to only to occur on ivtv1 (the first tuner of the > pvr-500). I also have a pvr-150 installed, which consumes ivtv0 (video0). > > With video0 in use (recording), if I cat from video1 (first tuner), I > almost immediately get the above. If I then turn around and cat from > video2 (second tuner), it works fine with no errors. > > I notice that all three ivtv devices are currently on the same > interrupt. Is this a cause for concern? > > Would moving the cards impact this (the problem, not the interrupts)? > > Changing the interrupts? > > Indications of a bad board? > > All of the above? > > None of the above? > Did you solve this? I had to move an old pvr250 from old master backend (where it ran for almost a year without a reboot or any problems) to a newer box that had one of those pvr500s with the bad samsung tuner but now I experience these dma errors and it ends up terminating the stream until I reboot which basically means I can not use the card. John
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