On Sat, 07 Jan 2006 23:17:27 -0600
Michael Sullivan <[EMAIL PROTECTED]> wrote:


> I tried the test "cat /dev/video0 > test.mpg" and opening it in mplayer
> and all I got was the blank screen.  

Blank screen indicates no signal.

> I tried it with /dev/video24 and
> got static

Typical tuner input, no channel, aka white noise.

> and with /dev/video32 I got weird polygonal images.

Probably a station close by, but not tuned in - a tuner input or possible the 
FM radio
port.

>  I think
> mythfrontend is freezing up after that 1.5 seconds because it takes
> awhile to get back to the menu screen.  Why is /dev/video spitting out
> nothing now, when it was just fine before I followed the mythtv howto?
>

Typically a channel and input needs to be switched on before anything will 
display.
Another way to test is to listen if there is audio, but the screen is still 
blank.  That indicates
an incorrect display setting, possibly in /etc/X11/xorg.conf.

Bob 
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