[mythtv-users] Problem with signal lock after upgrade to 11.10

[Michael T. Dean]

On 11/20/2011 01:13 PM, Idan Reller wrote:
> I've upgraded from mythbuntu 11.04 to 11.10.
>
> Since the upgrade, I'm experiencing the following problem:
>
> After reboot, it is impossible to watch live TV(DVB-T, using a 
> hauppauge HVR-1700 pci-e card). Mythtv simply can't get a signal lock.
>
> running dmesg shows the following:
>
> ...
> ...
> ...
> [26420.956502] tda10048_set_if() no default
> [26420.956509] tda10048_set_bandwidth() invalid bandwidth
> [26420.957324] tda18271_set_params: [1-0060|M] bandwidth not set!
> [26421.956500] tda10048_set_if() no default
> [26421.956507] tda10048_set_bandwidth() invalid bandwidth
> [26421.957321] tda18271_set_params: [1-0060|M] bandwidth not set!
> [26422.956499] tda10048_set_if() no default
> [26422.956506] tda10048_set_bandwidth() invalid bandwidth
> [26422.957320] tda18271_set_params: [1-0060|M] bandwidth not set!
> [26423.956493] tda10048_set_if() no default
> ...
> ...
> ...
>
> If I stop the backend and start it again, the problem remains.
>
> However, if I stop the backend, run tzap on one of my channels (using 
> a channels.conf file), and then start the backend, the problem is fixed.
>
> Why do I get these errors? Does anyone know how to solve this issue?
>
> Signal quality is excellent, so this is not the issue.

Complete guess, but it sounds like something about your capture card 
drivers has changed such that the information MythTV is using for the 
card is not correct.  Try "Delete all capture cards" in mythtv-setup, 
the re-create each capture card (in opposite order you want them used 
for Live TV), then re-connect inputs (in order you want them used for 
recordings).  Note that "Delete all capture cards" won't affect channels.

This is the "If you ever change capture cards or capture card 
drivers..." suggestion at 
http://www.gossamer-threads.com/lists/mythtv/users/264034#264034 , which 
applies due to the kernel upgrade that's part of the OS upgrade.

Mike