[mythtv] Machine hangs on channel-switching with MythTV

[Patrick Pflaum]

    Here's my journey with mythtv:

    Started with fresh machine, Mandrake 9.0, installed mythtv and all 
the prerequisites.

    Whenever I start mythtv it worked just like the reset button on the 
front, the machine instantly rebooted.  

    Installed Alsa drivers ( for onboard sound )

    mythtv works, but locks solid on channel changes.    Randomly would 
let me switch channels one or two times.

    Installed SB-Live soundcard + change alsa drivers -> still locks on 
channel changes.

    Installed fresh copy of Mandrake *8.2* with SB-Live soundcard in, 
 compiled qt from source, installed all the other prerequisites.

    AND IT WORKS!!!!!!!!!

    My hardware:

    MSI Motherboard,  Athalon 1700, 512MB Ram, 80G HD,  MSI nvidia 
geforce4 mx, 1 DVD drive, 1 CDRW drive, 1 PCI SB Live sound card.

    Don't know if that will help you at all, but there it is.

    Pat

     
   

     

John wrote:

>Erik,  I have been having the same problem.
>
>I posted to this list a couple of weeks ago but did not get much back. 
>http://www.snowman.net/pipermail/mythtv-dev/2002-November/000959.html Of
>course everyone told me that I should not be using CVS, etc but that was
>just my most recent try, I tried just about every combination I could with
>no luck.  I started with Debian stable and the install went pretty smooth.
> Once I ran into problems I started changing the configuration.  What is
>your configuration?  What kernel, bttv, alsa and video are you using?
>One thing I never tried is to hook up a serial console to see if the
>kernel logs any messages just before the crash.  The only output I ever
>got was while running mythtv from a ssh session:   read audio: Interrupted system call
>   VIDIOSYNC0: Interrupted system call
>
>xawtv also worked for me and I was able to watch live tv with Myth on the
>initial channel (Actually every now and again I could change channels one
>time.  But this was very random).  I successfully recorded and then played
>back a program.  However while recording a second time I switched to
>another window and started working on something else which caused the
>hang.  This may mean that the problem is not in the video, sound or
>network drivers.   That leaves BTTV and hard drive.
>>From what I could find you should make sure that your capture card is on
>it own interrupt (no help for me) and try adjusting the PCI latency (never
>found documentation on what values to try).  I also read that upgrading
>the harddrive drivers could help but I never found more information on
>this.
>I don't have myth installed anywhere right now, but if you find anything
>or would like to work on this let me know and I will reload, but for now I
>am just out of patience with.  Maybe I'll try again in a few weeks.
>John
>
>  
>
>>Hi Everyone,
>>
>>After a few weeks trying and reading this list I still have not solved
>>my  problem: MythTV hangs on all channelchanges.
>>
>>Xawtv works like a dream, and the source for channelswitching itself is
>> functionally equal in both xawtv and mythtv.
>>
>>At the moment I am busy building a system from scratch and source,
>>starting  with the CRUX distribution, to avoid having everything and
>>the kitchensink  hanging around as with the big distributions. At least
>>my frequent reboots  will be quicker this way :-)
>>
>>Any pointers for the hanging problem? I stopped developing for MythTV
>>as  the rebooting was getting boring and I just waited for new releases
>>of the  BTTV or ALSA driver to solve my problem (quite sure my problem
>>lies in that  direction). And without channelswitching: the main menu,
>>the EPG (without  selecting a channel) and timeshifting on a the
>>channel active when mythTV  was started is about all you can do...
>>
>>Erik
>>
>>
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>>    
>>
>
>
>
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