[ivtv-users] hvr-1600, frame CRC mismatch - incomplete frame

[Devin Heitmueller]

On Fri, Feb 12, 2010 at 3:15 PM, Kyle Lil <kpl388 at msn.com> wrote:
> I'm using the latest version of the cx18 drivers available from the
> linuxtv.org mercurial repository, which, as I understand, includes the
> latest performance tweaks for the Hauppage HVR-1600 by Devin Heitmueller.
> Unfortunately, I'm still getting occasional (~every 30 seconds) glitches in
> the video (watching with MythTV 0.22, Karmic x64), accompanied by an audible
> buzz, and the following error message in the mythfrontend.log:
>
> 2010-02-11 20:11:25.510 [ac3 @ 0x7fa2a884c820]frame CRC mismatch
> 2010-02-11 20:11:25.543 [ac3 @ 0x7fa2a884c820]incomplete frame
> 2010-02-11 20:11:25.543 [ac3 @ 0x7fa2a884c820]invalid frame size
>
> The card is capable of tuning the same channel with no apparent errors in
> Windows XP.
>
> Please let me know if I can provide any other information to help
> troubleshoot this problem.

I would suggest using azap to tune to the target channel, and then
watch the BER/UNC counts when the errors appear.  That will give us
some idea whether the problem is with the frontend, or whether it's
with the bridge.

Also, do you see the issue with *all* channels?  Or just particular
channels?  And what is the SNR on the channels in question that show
the problem?

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com