Mythtv Problems

Question

Well i'm having all sort of problems with Mythtv... i start the backend server and when i launch mythtv-setup as root it says:
Can't connect to MySQL server on '127.0.0.1' (111)
QSqlQuery::exec: database not open
QSqlQuery::exec: database not open
2006-10-10 15:38:04.938 DB Error (KickDatabase):
Query was:
SELECT NULL;
No error type from QSqlError? Strange...
As normal user it runs... and also mythbackend starts but it says:
Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
But when I start mythbackend as normal user it starts good and everything but when i try to watch tv with mythfrontend as normal user it says (in the backend server log):
2006-10-10 15:16:12.621 NVR: Error, unknown audio codec
VIDIOCGCHAN: Invalid argument
2006-10-10 15:16:24.235 TVRec(1): Changing from WatchingLiveTV to None
2006-10-10 15:16:24.572 Finished recording The People's Court: channel 1003
2006-10-10 15:16:34.907 Reloading backend settings
2006-10-10 15:16:52.531 Reschedule requested for id 0.
2006-10-10 15:16:52.538 Scheduled 0 items in 0.0 = 0.00 match + 0.01 place
2006-10-10 15:18:10.033 Expiring The People's Court from Tue Oct 10 15:00:00 2006, 1 MBytes, forced expire (LiveTV recording)
2006-10-10 15:18:19.631 Reschedule requested for id 0.
2006-10-10 15:18:19.638 Scheduled 0 items in 0.0 = 0.00 match + 0.01 place
2006-10-10 15:18:27.944 MainServer::HandleAnnounce Playback
2006-10-10 15:18:27.944 adding: xetra as a client (events: 0)
2006-10-10 15:18:27.945 TVRec(1): Changing from None to WatchingLiveTV
2006-10-10 15:18:27.945 TVRec(1): HW Tuner: 1->1
2006-10-10 15:18:28.025 Unknown video codec
2006-10-10 15:18:28.025 Please go into the TV Settings, Recording Profiles and
2006-10-10 15:18:28.025 setup the four 'Software Encoders' profiles.
2006-10-10 15:18:28.025 Assuming RTjpeg for now.
Any help would be thankful.
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Answer 1

2006-10-10 15:18:28.025 Please go into the TV Settings, Recording Profiles and
2006-10-10 15:18:28.025 setup the four 'Software Encoders' profiles.
2006-10-10 15:18:28.025 Assuming RTjpeg for now.
Go to Utilities > Setup > TV Settings > Recording Profiles within mythfrontend and play with the settings. You "should" see your tuner card there, select it and change the settings. A good one to start with is LiveTV as you can change the settings then escape and test watching tv.  If you don't see your tuner card then you know you'll have to go back and work on mythtv-setup.