[mythtv-users] KWorld ATSC-115 problems -- can't change channel, no sound

David Lonie loniedavid at gmail.com
Thu Jan 1 22:26:48 UTC 2009


On Thu, Jan 1, 2009 at 4:08 PM,  <alan.mcendoo at att.net> wrote:
> It sounds like you have the same problem I had with the KWorld 115 TV card.
> In my case it emerged when I upgraded from Ubuntu 8.04 to Ubuntu 8.10.  I
> had set the card up using the information at
> http://www.mythtv.org/wiki/index.php/Kworld_ATSC_110 in Ubuntu 8.04 where it
> worked in both analog and digital modes.  When I upgraded to Ubuntu 8.10 I
> had the same symptoms described, either just noise, or one channel without
> the ability to change it.  Others upgrading to Ubuntu 8.10 had the same
> issue.  It seems that the issue was with the V4l drivers packaged with
> different versions of the basic kernel.  At some point (back in the first
> quarter of 2008) a change was made to the drivers that resulted in a timing
> issue loading tuner modules on the i2c bus which basically means there is no
> tuner control on the KWorld 110/115 cards.  This was discussed on the V4l
> lists, https://www.redhat.com/mailman/private/video4linux-list in June and
> December 2008 and on the list
> http://www.avsforum.com/avs-vb/showthread.php?s=3569fb8ac624936b75259474b3a0cefc&t=1050693.
>
> There is a patch which can be used to get it working, but it may raise
> issues with other V4l devices in use.  The fix is described on the Ubuntu
> forum http://ubuntuforums.org/showthread.php?t=959407&highlight=Kworld+115.
> The method is not unique to Ubuntu but should work for any linux type.
>
> Hope this helps.

Looks like it should! Glad to see that it's a known issue -- I was
going nuts seeing all the reports of how wonderful this card is when I
couldn't get mine set up :) Strange that none of this showed up during
my days of googling. I see ubuntu 8.10 uses 2.6.27 -- that's what I'm
running so chances are they're the same drivers. I'll try out that
patch later today and post the results here.


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