hvr-1600 fails frequently on multiple recordings

I have a fairly new HVR-1600 which I have seen fail quite a number of times now when it's asked to record more than one channel on a clearqam multiplex. This time it was 3 recordings at once.

There's nothing at all in the kernel ring buffer, just mythtv reports a failed recording. Usually one of the files being recorded to will only be 376 bytes long and the rest will be 0 bytes.

I am running ubuntu's 3.2.0-27-generic kernel with what looks like a 1.5.1 cx18 driver. The card is either a:

14f1:5b7a Conexant Systems, Inc. CX23418 Single-Chip MPEG-2 Encoder with Integrated Analog Video/Broadcast Audio Decoder

or a:

4444:0016 Internext Compression Inc iTVC16 (CX23416) Video Decoder (rev 01)

Sorry. I don't recall which is which any more.

But I really need to figure this out since failed recordings is causing all kinds of disappointment around here. I'm really at the end of my rope with it.

Tomorrow morning I am going to demote this card to secondary duty and promote my HVR-950Q to primary duty since I never had this kind of grief with it. But even in secondary duty, it could very well be called upon to record multiple clearqam channels simultaneously so I would really like to get this figured out.

Any ideas?

Cheers,
b.

Have you checked on the Ubuntu Forums for any information about this? There's a thread about 0-byte recordings there, which might have some solutions for you. I had the same issue with analog recording a while back, and found that in my case, it was due to having a second hard drive listed as a storage directory. If the hard drive didn't spin up quick enough, the recording failed.

Here's a link to the thread on their site:
http://ubuntuforums.org/showthread.php?t=1687846

Hope this helps, and have a great day:)
Patrick.