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 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@xxxxxxxxxxxxx> http://www.chaosbits.net/ Don't top-post http://www.catb.org/jargon/html/T/top-post.html Plain text mails only, please. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
