[mythtv-users] live tv no audio external channel changer

[atemp at tpg.com.au]

I have a problem with losing audio when changing channels on an external satellite tuner.

The problem occurs in 0.24-fixes after an upgrade from 0.23-fixes.  I have had the same setup for 
4-5 years.  My external foxtel satellite decoder is connected to myth via the composite input of a 
software V4L decoder and the audio via the sound cards line input.

On initial tuning of the channel, all is fine, video and audio is present.  Hence my recording are OK.

However, on Live TV, the initial tuning is OK with audio and video, but if I change channels audio is 
lost.  Also the changing of channels seems to take a considerably longer time than previously.

It would seem to be Myth's changes to external tuners, as if I do not change channel via myth, but 
only on the external tuner, bypassing the channel changing script, then audio is not lost.  Perhaps 
commits 25543 / 25544 ?

Does anyone know whether this is a known problem with 0.24, or a change in setup that may be 
required?

I attach a frontend log with verbose audio showing audio detected for the initial tune and then lost 
during a channel change.

BTW: I also have a number of DVB cards.  Channel changing is not a problem on these.
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