Re: Hauppauge model 73219 rev D1F5 tuner doesn't detect signal,older rev D1E9 works
From: Jesper Juhl
Date: Thu Jul 21 2011 - 08:08:33 EST
On Tue, 19 Jul 2011, Michael Krufky wrote:
> On Tue, Jul 19, 2011 at 3:37 AM, Jesper Juhl <jj@xxxxxxxxxxxxx> wrote:
> > Hi
> > I have a bunch of Hauppauge HVR-1900 model 73219's, some are revision D1E9
> > and work perfectly, but with the newer revision D1F5's the tuner fails to
> > detect a signal and consequently just gives me blank output on
> > /dev/video0. Other input sources, like composite or s-video, work just
> > fine on the new revision, it's just the tuner that does not work.
> > If I now do 'cat /dev/video0 > test.mpg' I get a perfectly valid MPEG
> > stream, but a rather boring one - just a black display and no audio.
> > With the old D1E9 revision I get
> > [root@dragon ~]# cat /sys/class/pvrusb2/sn-6569758/ctl_signal_present/cur_val
> > 65535
> > [root@dragon ~]#
> > and 'cat /dev/video0 > test.mpg' gives me the stream I'd expect (as in
> > actual contents, not just a black screen).
> > Any ideas on how to fix this?
> > I can test any patches you may come up with and if there's any further
> > information you need from me in order to get an idea about what the
> > problem is, then just ask.
> > Please CC me on replies since I'm not subscribed to the linux-media list.
Ok, so things did change a bit :-)
I still get a 0 when I cat ctl_signal_present/cur_val , but I no longer
get just a black stream from the bideo device now I get static and very
badly tuned "images". See for example:
http://personal.chaosbits.net/hauppauge-pvr-1900-test.mpg which is the
cat /dev/video1 > /tmp/hauppauge-pvr-1900-test.mpg & seq 147250280 147250310 | while read i; do echo $i > /sys/class/pvrusb2/sn-6569758/ctl_frequency/cur_val; sleep 2; done ; killall cat
(warning - large file - ~65MB)
Definately an improvement.
Jesper Juhl <jj@xxxxxxxxxxxxx> http://www.chaosbits.net/
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