[mythtv-users] Problems with Tv-channels that doesn't always broadcast and mythtv, Please help

[Webek]

I will try to explain my proplem as short as possible

We have in Sweden Ground-broadcasted channels that doesn't send  tv/video all 24 hours.
So my problem is when I change to one channel that doesnt broadcast it hangs/freezes and I cant do nothing but change to a terminal and kill mythfrontend.

I found in the doc/faq that this is a video card driver issue. But can't there be made a change in mythtv so when no video sync is found it stopps try to sync the sound.

I belive that it's the process of syncing audio to the video in realtime priority that hangs the frontend. I can't change channel or do anything.

Does anyone know where in the mythtv code (source)  the video and audio get synced ? Can that be the problem ??

Mythfrontend starts on the last exited tv-channel. Where is this stored ? I have to reboot the computer if I have changed to a channel that doesn't broadcast since mythfrontend try's to reconnect to the channel that doesn't broadcast every time I start mythfrontend/livetv

Please help me with some clue where I can solve my problem. Please!


I own a Asus TV FM card with saa 7135 and a Philips tuner (Pal) and are running mythtv 0.16

Here are the logs where i start mythtv livetv on a channel that doesn't broadcast:

Mythbackend
2004-10-04 03:20:17 MainServer::HandleAnnounce Playback
2004-10-04 03:20:17 adding: nalletv as a client (events: 0)
2004-10-04 03:20:17 MainServer::HandleAnnounce Playback
2004-10-04 03:20:17 adding: nalletv as a client (events: 1)
2004-10-04 03:20:17 MainServer::HandleAnnounce Playback
2004-10-04 03:20:17 adding: nalletv as a client (events: 0)
2004-10-04 03:20:17 MainServer::HandleAnnounce Playback
2004-10-04 03:20:17 adding: nalletv as a client (events: 0)
2004-10-04 03:20:17 adding: nalletv as a remote ringbuffer
2004-10-04 03:20:17 Changing from None to WatchingLiveTV
strange error flushing buffer ...
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
Multiple bttv errors, further messages supressed


Mythfrontend
2004-10-04 03:19:42 Enabled verbose msgs : important general
2004-10-04 03:19:45 Registering Internal as a media playback plugin.
2004-10-04 03:20:17 Connecting to backend server: 127.0.0.1:6543 (try 1 of 5)
2004-10-04 03:20:17 Using protocol version 13
2004-10-04 03:20:17 Using protocol version 13
2004-10-04 03:20:17 Using protocol version 13
2004-10-04 03:20:23 taking too long to be allowed to read..
2004-10-04 03:20:28 taking too long to be allowed to read..
2004-10-04 03:20:38 RemoteFile::Read() failed in RingBuffer::safe_read().
2004-10-04 03:20:49 RemoteFile::Read() failed in RingBuffer::safe_read().
2004-10-04 03:20:59 RemoteFile::Read() failed in RingBuffer::safe_read().
2004-10-04 03:20:59 Opening OSS audio device '/dev/dsp'.
2004-10-04 03:20:59 Audio fragment size: 4096
2004-10-04 03:20:59 Using XV port 53
2004-10-04 03:21:12 Changing from None to WatchingLiveTV
2004-10-04 03:21:12 Using realtime priority.
2004-10-04 03:21:17 Audio buffer overflow, audio data lost!
2004-10-04 03:21:19 Audio buffer overflow, audio data lost!
2004-10-04 03:21:20 Audio buffer overflow, audio data lost!
2004-10-04 03:21:20 RemoteFile::Read() failed in RingBuffer::safe_read().
2004-10-04 03:21:21 Audio buffer overflow, audio data lost!
2004-10-04 03:21:23 Audio buffer overflow, audio data lost!
2004-10-04 03:21:25 Audio buffer overflow, audio data lost!
2004-10-04 03:21:26 Audio buffer overflow, audio data lost!
2004-10-04 03:21:27 Audio buffer overflow, audio data lost!
2004-10-04 03:21:28 Audio buffer overflow, audio data lost!
2004-10-04 03:21:29 Audio buffer overflow, audio data lost!
2004-10-04 03:21:30 Audio buffer overflow, audio data lost!
2004-10-04 03:21:30 RemoteFile::Read() failed in RingBuffer::safe_read().
2004-10-04 03:21:31 Audio buffer overflow, audio data lost!
2004-10-04 03:21:32 Audio buffer overflow, audio data lost!
2004-10-04 03:21:33 Audio buffer overflow, audio data lost!
2004-10-04 03:21:34 Audio buffer overflow, audio data lost!
2004-10-04 03:21:35 Audio buffer overflow, audio data lost!
2004-10-04 03:21:36 Audio buffer overflow, audio data lost!
2004-10-04 03:21:38 Waited 2 seconds for data to become available, waiting again
...
2004-10-04 03:21:40 Waited 2 seconds for data to become available, waiting again
...
2004-10-04 03:21:41 RemoteFile::Read() failed in RingBuffer::safe_read().
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