[mythtv-users] 'Watch TV' goes to black then back to menu

[R. G. Newbury]

On 01/24/2010 12:20 AM, Barkha wrote:
> I need some help with my setup. After struglling to get myth-tv
> installed, it seems (it looks) like everything is okay. And everything
> seems to work fine until I try to watch Live TV. When I start it, the
> screen goes black for about 10-15 sec, then returns to the menu. I can't
> figure out what's wrong. After searching around and following different
> advice, I tried running the frontend log. But I don't know what it
> means. I would really appreciate help to get my Myth-tv working. I also
> have Hauppauge 950Q (a USB device) .  Here is frontend.log printout :
>
> emichelle at emichelle-bedroom1 ~ $ tail -50 mythfrontend.log
> 2010-01-24 00:15:46.699 MMUnix::AddDevice() Error: failed to stat
> /dev/power,
>              eno: No such file or directory (2)
> 2010-01-24 00:15:46.707 MMUnix::AddDevice() Error: failed to stat
> /dev/trace,
>              eno: No such file or directory (2)
> 2010-01-24 00:15:46.716 MMUnix::AddDevice() Error: failed to stat /dev/bdi,
>              eno: No such file or directory (2)
> 2010-01-24 00:15:46.722 MMUnix::AddDevice() Error: failed to stat
> /dev/power,
>              eno: No such file or directory (2)
> 2010-01-24 00:15:46.729 MMUnix::AddDevice() Error: failed to stat
> /dev/trace,
>              eno: No such file or directory (2)
> 2010-01-24 00:15:46.741 MMUnix::AddDevice() Error: failed to stat /dev/bdi,
>              eno: No such file or directory (2)

> 2010-01-24 00:15:51.690 TV: Attempting to change from None to Watching
> WatchingLiveTV
> 2010-01-24 00:15:51.691 MythContext: Connecting to backend server:
> 127.0.0.1:6543 <http://127.0.0.1:6543> (try 1 of 1)
> 2010-01-24 00:15:51.692 Using protocol version 50
> 2010-01-24 00:15:51.745 Spawning LiveTV Recorder -- begin
> 2010-01-24 00:15:58.749 MythSocket(9027a80:55): readStringList: Error,
> timed out after 7000 ms.
> 2010-01-24 00:15:58.749 RemoteEncoder::SendReceiveStringList(): No response.
> 2010-01-24 00:15:58.749 Spawning LiveTV Recorder -- end
> 2010-01-24 00:15:58.753 GetEntryAt(-1) failed.
> 2010-01-24 00:15:58.754 EntryToProgram(0 at Wed Dec 31 19:00:00 1969)
> failed to get pginfo
> 2010-01-24 00:15:58.754 TV Error: HandleStateChange(): LiveTV not
> successfully started

> 2010-01-24 00:16:01.809 Deleting UPnP client...
> Error in my_thread_global_end(): 2 threads didn't exit

The first set of errors sorta looks like you are missing a module or 
driver or the firmware (which are the bits which would create the /dev 
entries).
I think the 950Q uses the same modules as the 950, in which case, an 
'lsmod | grep em28xx' should give you:
em28xx_alsa             7168  0
em28xx_dvb              8140  0
dvb_core               73872  1 em28xx_dvb
em28xx                 71560  2 em28xx_alsa,em28xx_dvb

The MythSocket error I only get when I mess up the mysql setup. Check 
that the IP addresses for the 'this machine' and 'master' are correct. 
Check that the hostname is correct in 'settings'. Then check that use 
'mysql:mysql' owns the mysql folder where mythconverg lies, and that 
user 'mythtv' can access the mythconverg database.

Does this unit *record* properly? If so, the error is not on the 
hardware side of the line.

Geoff