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    SubjectRe: Hauppauge model 73219 rev D1F5 tuner doesn't detect signal, older rev D1E9 works
    On Tue, 19 Jul 2011, Michael Krufky wrote:

    > On Tue, Jul 19, 2011 at 3:37 AM, Jesper Juhl <jj@chaosbits.net> 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
    result of
    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@chaosbits.net> http://www.chaosbits.net/
    Don't top-post http://www.catb.org/jargon/html/T/top-post.html
    Plain text mails only, please.



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