[linux-dvb] Testing HVR1800

Chaogui Zhang czhang1974 at gmail.com
Tue Jan 22 21:06:21 CET 2008


On Jan 22, 2008 1:45 PM, Barry Quiel <quielb at ecst.csuchico.edu> wrote:
>
>
>
> Chaogui Zhang wrote:
> > On Jan 22, 2008 5:38 PM, Barry Quiel <quielb at ecst.csuchico.edu> wrote:
> > [snip]
> >> So I spoke a bit too soon. For whatever reason it started working in
> >> Myth, although I still can't get a good cat /dev/video1.  BUt I can't
> >> change the channel.  When I try and change the channel Mythfrontend
> >> reports an error and the exits back to the menu.  When I go back into
> >> livetv it is on the same original channel and there is no audio.  If I
> >> exit out and go back in I get audio back, but still can;t change the
> >> channel.
> >>
> >
> > Although I don't have the HVR1800...
> >
> > In my experience, it is generally easier to test a new driver if you
> > use simpler applications such as tvtime, azap/dvbscan. These programs
> > will tell you pretty quickly whether the device and its driver are
> > working properly or not. Once you are sure the drivers are working
> > properly, then move on to your favorite media center or any other
> > program.
> >
> > Trying to test device driver with MythTV sometimes muddles the water
> > too much and you won't know whether it is a problem with the driver or
> > the application.
> >
>
> I don't think a cat /dev/video1 can get much simpler.  But in this case
> I am getting results that would appear to be reversed.  The simpler
> testing method is giving poor results, while the more complex
> application is giving better results, although not 100%.
>

Is the device properly initialized by the driver when you did "cat
/dev/video1"? Is it tuned to the right channel/frequency/source input?
"cat /dev/video1" itself lacks the ability to control the device and
therefore you won't be able to test the driver's ability to change
channels, for example, without relying on another application.

-- 
Chaogui Zhang



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