linux-kernel - Re: Hauppauge model 73219 rev D1F5 tuner doesn't detect signal, older rev D1E9 works

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 21 Jul 2011 14:08:23 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	Michael Krufky <mkrufky@...nellabs.com>
cc:	linux-media@...r.kernel.org, Mike Isely <isely@...ox.com>,
	Aurelien Alleaume <slts@...e.fr>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-kernel@...r.kernel.org, Michael Krufky <mkrufky@...uxtv.org>
Subject: Re: 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@...osbits.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@...gon ~]# cat /sys/class/pvrusb2/sn-6569758/ctl_signal_present/cur_val
> > 65535
> > [root@...gon ~]#
> >
> > 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@...osbits.net>       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-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/