[mythtv-users] PVR-250, no signal

[Kevin D. Snodgrass]

Kevin D. Snodgrass wrote:
> Following Jarod's howto...
> 
> Everything appears fine, but I get no capture with cat /dev/video0 > 
> test1.mpg.  I tried /usr/bin/test_ioctl -p [012345678], and only -p 4 
> gives many anything but a totally blank picture.  With -p 4 I get 
> static.  Same thing when done as user mythtv or root.  Trying to capture 
> from coax on a regular US cable connection.

...snipped...

Played around some more and I could capture from channels 5 
and 6 (local CBS and C-SPAN2), but no other channels up 
through 49.  Is this a frequency thing?  Does Cox Cable do 
something different than other cable companies?  All my TVs 
and VCRs have "just worked".