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[Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx>]

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

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Triaged
Status in MythTV:
  Invalid
Status in “linux” package in Ubuntu:
  Triaged
Status in Debian GNU/Linux:
  New

Bug description:
  This is a continuation of bug #436564. Please refer to that for relevant dmesg'.
  The capture card I have is the Hauppauge HVR-1300.
  The card is now correctly recognized as DVB-T but channel scan fails with message "Timed out, no signal" at each channel is scanned.
  The command scan <location> > channels.conf ends correcly and file channels.conf is feeded with all tunable channels.
  I tried to import such channels.conf with the same result.
  Increasing the signal and channel timeout in the DVB settings (now up to 1000 but I planned to increase to ignore) doesnt solve the problem.
  Tonight I will try what Marc suggested - mythtv-setup --verbose channelscan,siparser,channel,record - then I will report the log.

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