Finally had a chance to debug this issue using an HVR-1300.  It's
actually a race condition in DVB core which effects all three cards.
Have submitted the attached patch to linux-media, which should result in
all three cards working properly, and should supersede any patches
floating around which rip out the GPIO code (which is the incorrect
fix).

Users are welcome to try the frontend_dvb_init.patch against the latest
media_build, and it should address the issue.  Please report back
success/failure either way.

Thanks,

Devin Heitmueller
Kernel Labs Inc.

** Patch added: "frontend_dvb_init.patch"
   
https://bugs.launchpad.net/mythtv/+bug/439163/+attachment/2191566/+files/frontend_dvb_init.patch

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https://bugs.launchpad.net/bugs/439163

Title:
  HVR-1300 HVR-3000 HVR-4000 broken in kernel

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