[mythtv-users] HELP: System crash when trying to watch live orrecorded tv

[Michael T. Dean]

Mr cctsurf wrote:

>> From: "Michael T. Dean" <mtdean at thirdcontact.com>
>>
>>
>> Mr cctsurf wrote:
>>
>>> Notably it seems that I can record because I can see the show 
>>> previewed in a small window (in my theme, below the listing of 
>>> recorded shows) before attempting to watch it (I haven't been able 
>>> to play recordings using Myth or mplayer, either with transcoding 
>>> (mpeg4) or without - straight .nuv file)  When I attempt to play 
>>> back the recording with Myth, I get a lockup, with Mplayer, I get 
>>> some attempt to load codecs, but it exits very quickly.  After a 
>>> mythtv lockup, I cannot do anything but
>>> reset the system, SSHing in doesn't work (in fact, I often have to 
>>> reset twice to get a boot).
>>>
>>> I assume that I could have a problem with my sound (sblive), but I 
>>> have at times disabled it (mythtv asks if I want to proceed without 
>>> sound (I had difficulty initially getting the sound devices to be rw 
>>> for users on reboot), and when I proceed, it crashes the computer in 
>>> the same way that it did with the sound enabled (perhaps this is 
>>> just the fact that myth crashes without sound working).
>>
>> Myth doesn't necessarily crash without sound, but Myth is very likely 
>> to experience problems (which may even result in crashing) on a 
>> system whose sound is not properly configured.  My recommendation is 
>> to fix the sound issue and see if that fixes the playback issue.
>
> How do I know when I have Sound working correctly?  Is it When I can 
> perform the test listed in the documentation - Troubleshooting Audio 
> section, which says to play xawtv and use aplay /dev/dsp to output the 
> audio?

OK.  I thought you were saying it's not working and sometimes you said 
yes and sometimes you said no to the prompt about continuing without 
sound.  So, if it doesn't ask you whether to continue without sound when 
sound is "enabled," you should be OK.

Therefore, it's probably a video output issue.

>>> I captured this through a ssh connection:
>>>
>>> 2005-10-19 02:57:50.808 New DB connection, total: 1
>>> Total desktop width=1280, height=1024, numscreens=1
>>> 2005-10-19 02:57:50.907 Using screen 0, 1280x1024 at 0,0
>>> 2005-10-19 02:57:50.923 mythfrontend version: 0.18.1.20050510-1 
>>> www.mythtv.org
>>> 2005-10-19 02:57:50.925 Enabled verbose msgs : important general
>>> 2005-10-19 02:57:51.517 Switching to square mode (G.A.N.T.)
>>> mythtv: could not connect to socket
>>> mythtv: No such file or directory
>>> lirc_init failed for mythtv, see preceding messages
>>> 2005-10-19 02:57:53.049 Registering Internal as a media playback 
>>> plugin.
>>> 2005-10-19 02:58:25.370 New DB connection, total: 2
>>> 2005-10-19 02:58:25.490 Connecting to backend server: 
>>> 192.168.1.1:6543 (try 1 of 5)
>>> 2005-10-19 02:58:25.505 Using protocol version 15
>>> 2005-10-19 02:58:25.598 Using protocol version 15
>>> 2005-10-19 02:58:26.014 Disable DPMS
>>> 2005-10-19 02:58:26.396 Opening audio device 'default'.
>>> 2005-10-19 02:58:26.582 Using XV port 53
>>> 2005-10-19 02:58:27.514 Realtime priority would require SUID as root.
>>>
>>> What is going on at the time of the last line?
>>
>> Nothing much.  That's not an error, just a configuration notice.  
>> Don't worry about it (at least, not at this point).
>>
>>> I assume that that would point to what is crashing the system.
>>
>> No.  Something else.
>
> I understand that that's not an error, but if I knew what was going on 
> in the order of execution at that point, I thought maybe I could 
> direct my troubleshooting more easily.

At the level of logging you've chosen (default), it could be any of a 
number of things.  To get more detailed info from the logging, use a 
command like:

mythfrontend -v playback

or

mythfrontend -v all

Also, search the lists.  It seems like at least one person per week 
starts a new thread about LiveTV crashing after 1 second or something 
like that.

HTH,
Mike