[mythtv-users] performance and missing channels

[Michael T. Dean]

On 10/04/2004 11:49 AM, Tilman Kispersky wrote:

> My myth setup is largely complete.
>
> Currently, for some reason I am unable to view channels other than 5 
> and 7.
> I've got lots of other ones on my TV, they just come through as static 
> on my computer when I change to them
> using mythfrontend. The channel guide data exists (the info bar 
> correctly identifies
> the channel and what should be playing), the picture is static and 
> there is no audio. The
> only strange setting in my setup is that I set tuner type=39.  I was 
> getting only a black
> screen before, and setting type=39 gave me the two channels I have 
> now, and the static.
> (thats at least a step in the right direction).
> Does anyone have any experience with this problem and know what I have 
> to do to see
> all channels??

You have specified the wrong tuner type.  You probably have the TCL 
2002N tuner--which is not yet supported by the tuner module that ships 
with the Linux kernel.  Therefore, you need to do some patching.

Please post:
Your distribution
The ivtv-related info from mod{ules,probe}.conf
The ivtv initialization info, which can be obtained from your system log 
file--assuming /var/log/messages--with:

tac /var/log/messages |
sed -n '/=  END INIT IVTV  =/,/= START INIT IVTV =/p;
        /= START INIT IVTV =/q' |
tac

> Another question
> I am running myth on a Duron 800 with Haup. 250.  Encoding takes about 
> 15-20% CPU (does that seem about right?).
> and decoding (watching a stored program) a full 100%.  I am using 
> integrated video for this,
> how much of a performace gain would I get with an improved video card? 

Depends on which video card you're using currently.  If the video 
drivers for your current card support the X Windows Video extension, Xv 
(you can find out by running xvinfo--"no adapters found" is bad), you 
probably won't see much difference.  If they don't support Xv, you'll 
see a huge difference.

Mike