[mythtv-users] HD-PVR Glitching Issues

[John P Poet]

On Sat, Mar 26, 2011 at 10:58 AM, john.baab at gmail.com
<john.baab at gmail.com>wrote:

> Another update: After flashing the latest firmware and switching STBs
> the issue still remains.  Going to try to swap the my amp as soon as
> my buddy returns the spare one, but I don't suspect that will help as
> my HDHR recordings don't seem to have the same issue.  Not sure what
> is left to try at this point, replacing the HD-PVR maybe.
> _______________________________________________
>


Are you compiling from source?  If so I have a patch you can try.  It does
NOT solve the issue, but I think it *may* help reduce it.  Then again, it
may do nothing -- I just may be a little luckier lately.

I have the same problem even when just using "cat /dev/hdpvr0 > test.avi"
outside of myth, so there may not be anything myth can do about it.  The
problem has gotten noticeably worse for me, since upgrading to Fedora 14, so
I am wondering what change there.  Did the driver change?  Did the scheduler
change?  Is there more contention on the USB bus?

At the same time, I can record many shows without a problem.  Once thought I
have had: is it channel related?  In other words, do some stations have the
problem worse than others?  Do some channels send out a "cleaner" signal?
 If it is due to "cleanliness" of the signal, is a problem with video or
audio or both?  I am convinced that some STBs have the problem *much* worse
than others, which also indicates a "signal" problem.  Of course, one could
blame the HD-PVR for not being more tolerant of "bad" signals.

The HD-PVR also comes in a variety of hardware revisions.  I have a "rev c2"
and a "rev e1".  I have not kept proper records, but I believe my c2 is
slightly more prone to the problem than the e1.  But, like I said, it could
just be luck of which unit tends to be used to record a given channel/show.
 There are those that blame aging wall-warts for such problems.  If my c2
does have the problem more than the e1, it could be because that wall-wart
is older.

For me, even with Fedora 14, the "glitch" /only/ happens a couple times an
hour (at most) and usually does not happen at all.  But it is annoying when
it does happen.


John
-- 
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