first tuning to non-default DiSEqC input of a new card in LiveTV fails

[pstehlik@…]

My setup: channel 1 = bttv (card 1, sourceid = 1); channels 6,8 = DVB-S DiSEqC input 1 (card 2, sourceid = 2); channel 9 = DVB-S DiSEqC input 2 (card 2, sourceid = 3).

The problem is that when asking for channel 9 while LiveTV is tuned to another card the MythTV correctly finds out that it should switch to card 2 but then ignores the sourceid/DiSEqC setup somehow and tunes the last used channel on the wrong DiSEqC input instead.

Timeline:

• 12:55:00 entered Live TV - bttv channel 1
• 12:55:30 asked for channel 8 - got channel 8
• 12:56:30 asked for channel 9 and since I am on the card 2 already I get the channel 9 correctly
• 12:57:00 switching back to bttv by changing to channel 1
• 12:57:30 trying to get channel 9 (=switching to card 2) but getting channel 8 -> PROBLEM. Probably got ch.8 because it was last used channel on card 2/sourceid 2 - my choice of channel 9 was ignored completely
• 12:58:00 changing to channel 6 to make the 6 last used channel on card 2/sourceid 2
• 12:58:30 changing to channel 9 to make the 9 last used channel on card 2/sourceid 3
• 12:59:00 going back to bttv
• 12:59:30 asking for channel 9 (=switching to card 2) but getting channel 6 -> PROBLEM. Probably got ch.6 because it was last used channel on card 2/sourceid 2 - my choice of channel 9 was ignored completely

[danielk]

(In [8641]) Fixes #1039.

Makes starting input match starting channel.