Hans, I tried to reproduce this with a different test (since I had already changed my software that had caused this problem before) and I couldn't reproduce the problem.
Things are working for me though, as long as I close the device when I don't need to use the video stream. If I run into this again, I'll let you know and try some of the things you suggested. Thanks, Rich -- Rich Kadel Appeligo, Inc. (858) 433-1747 www.appeligo.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hans Verkuil Sent: Friday, October 12, 2007 6:26 AM To: Discussion list for development of the IVTV driver Subject: Re: [ivtv-devel] spontaneous muting Rich, Any progress on this issue? Hans On Monday 17 September 2007 20:00:22 Rich Kadel wrote: > I put a test together to exercise this. I don't know if I have the > version you are referring to with the "Audio microcontroller" > messages, but I'll watch /var/log/messages for that. > > Rich > > -- > > Rich Kadel > Appeligo, Inc. > (858) 433-1747 > www.appeligo.com > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Hans Verkuil > Sent: Sunday, September 16, 2007 4:44 AM > To: Discussion list for development of the IVTV driver > Subject: Re: [ivtv-devel] spontaneous muting > > On Wednesday 29 August 2007 17:55:02 Rich Kadel wrote: > > No, I'm certain it's not heat related. I started collecting video > > about a week ago on two servers that have been up 24/7 for months > > in a controlled colocation facility, and the problem developed over > > the next few days. I was using tuners that had been used for VBI > > collection up until that point. > > > > FYI, I'm trying a couple of things now to see if I get better > > results. Both of my production servers have multiple PVR-500s (3 > > in one and 4 in the other), with most recording VBI. Now I > > dedicate one tuner per server to video capture (and no VBI). I saw > > the color problem on both servers plus on my development server. > > So here's what I'm trying: > > > > 1. Moving the video from ivtv5 and ivtv7 to ivtv0. (Cyrus A > > reported muting problems with the second tuner on a PVR-500, but > > not the first, and I THINK that's what I noticed) > > 2. Closing the device when I don't need to capture video. > > (Previously, my software continually read from the device and piped > > output only when needed.) I'm only recording short clips based on > > an algorithm, so this will open and close the device many times per > > hour. I don't know if this will help, but the problem only > > developed after I started reading from the video device continually > > for hours or days, which I've never done before. 3. Creating a > > convenient way for me to monitor the results by server and time. I > > should be able to provide clearer information on the symptoms if > > this occurs again. > > > > It's been 12 hours, and so far it still looks good. But I need a > > few days to be sure. > > Have you ever tried switching the channel to another frequency and > back again when the audio/video problems develop? I wonder if the > tuner frequency might be drifting over time. Besides going to B&W > does the amount of noise in the video also increase? I mean, the > whole chain of losing color, then audio muting suggests a tuner > issue. > > Note that the latest v4l-dvb has better status reporting (you might > already be using it, I don't know). If the cx25841 cannot lock onto a > proper audio signal you'll get this line: > > Audio microcontroller: detecting > > If after changing the frequency (try just setting the same frequency) > it changes to 'running', then it is almost certainly a tuner issue. > > You can also try using the S-Video or composite input: if you get the > same problems there, then it must be a cx25841 problem instead (since > the tuner is not used in that scenario). > > Regards, > > Hans > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel > > > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
