On Sun, Apr 24, 2011 at 9:30 PM, Eric B Munson <emun...@mgebm.net> wrote: > On Tue, Apr 19, 2011 at 8:21 PM, Andy Walls <awa...@md.metrocast.net> wrote: >> On Tue, 2011-04-19 at 13:12 -0400, Eric B Munson wrote: >>> On Tue, 19 Apr 2011, Andy Walls wrote: >>> >> >>> > > > Have you used v4l2-ctl or ivtv-tune to tune to the proper tv channel >>> > > (the driver defaults to US channel 4)? >>> > > >>> > > emunson@grover:~$ v4l2-ctl -F >>> > > Frequency: 0 (0.000000 MHz) >>> > > emunson@grover:~$ v4l2-ctl -f 259.250 >>> > > Frequency set to 4148 (259.250000 MHz) >>> > > emunson@grover:~$ v4l2-ctl -F >>> > > Frequency: 0 (0.000000 MHz) >>> > >>> > OK, that doesn't look good. The tda18271 tuner and/or tda8290 demod >>> > drivers may not be working right. >> >> I looked into this. >> >> Apparently the tda18271 tuner driver doesn't report back analog >> frequency setting. So reading back 0.00000 MHz is OK. >> >>> > I'll have to look into that later this week. >>> > >>> > BTW, Mike Krufky just submitted some patches that may be relevant: >>> > >>> > http://kernellabs.com/hg/~mkrufky/tda18271-fix >>> > >>> >>> I have applied these patches and I am still seeing the same problem >>> (frequency >>> still report 0 after being set) and mplayer still closes immediately. >> >> I don't have those patches applied. I just tested my 74351 HVR-1600 >> again tonight, and analog channel 3 works for me. I don't know what to >> say.... >> >>> > > >>> > > > Does v4l2-ctl --log-status still show no signal present for the '843 >>> > > > core in the CX23418? >>> > > >>> > > Yeah, >>> > > [94465.349721] cx18-0 843: Video signal: not present >>> > >>> > The tuner or demod isn't tuning to a channel or getting a signal. >>> > >>> > Can you try channel 3 (61.250 MHz)? That one works for me. >>> >>> Still shows not present on channel 3. >> >> OK. Tonight was the first time I have *ever* been able to reproduce the >> "red screen" out of a CX23418. >> >> I am fairly sure the red screen happens because of some kernel bug or >> PCI bus problem that ends up corrupting the CX23418 registers >> responsible for configuring the CX25843 A/V core inside of the CX23418. >> The '843 core is responsible for digitizing the analog video, so when it >> stops functioning, the result is a red screen. I guess the root cause >> could also happen due to some thermal or power condition causes the '843 >> core to stop, but I think that is less likely. >> >> Anyway, when you're going to get a red screen, the '843 core will always >> indicate "cx18-N 843: Video signal: not present", even if there is a >> signal present from the analog tuner and demodulator chips. >> >> >>> > > > Does mplayer /dev/videoN -cache 8192 have a tv station when set to >>> > > > the rf analog input with v4l2-ctl? >>> > > >>> > > emunson@grover:~$ mplayer /dev/video0 -cache 8192 >>> > > MPlayer 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team >>> > > >>> > > Playing /dev/video0. >>> > > Cache fill: 0.00% (0 bytes) >>> > > >>> > > >>> > > Exiting... (End of file) >>> > >>> > Hmmm. I would have expected at least a black picture with snow, if not >>> > tuned to a channel. >>> > >>> > Does analog S-Video or Composite work? >>> >>> Unfortunately, I do not have anything I can use to test these. The card >>> only >>> takes coaxial or S-Video input and I don't have any sort of S-Video cables >>> or >>> converters. >> >> With new HVR-1600 from Hauppauge, an adapter for plugging a Composite >> RCA cable into the S-Video jack is in the box. >> >> It looks very much like the one at the end of this thread, but it is >> grey in color: >> >> http://www.hauppauge.co.uk/board/showthread.php?t=22115 >> >> If this is a second hand card, or one bought from e-Bay, etc. have you >> ever tested it in a Windows machine with the Hauppauge Windows drivers? >> (In other words, are you reasonably confident the card is not defective >> or broken.) >> >> >> When testing tonight, I unloaded all the drivers, performed the >> following commands to get verbose debugging, and saved the dmesg: >> >> # modinfo tuner >> # modprobe tuner debug=7 >> # modinfo tda8290 >> # modprobe tda8290 debug=7 >> # modinfo tda18271 >> # modprobe tda18271 debug=31 >> # modinfo cx18 >> # modprobe cx18 debug=255 >> >> # ivtv-tune -d /dev/video1 -c3 >> # v4l2-ctl -d /dev/video1 --log-status >> >> # mplayer /dev/video1 -cache 8192 >> >> I'll send you the 138 kB dmesg file off list, so you can see the >> messgaes generated by a functioning 73451 HVR-1600 setup. Note that the >> card of interest in the dmesg output was 'cx18-1'. >> >> You'll want to look to see that the TDA18271 and TDA8290 related >> messages look the same, to get reasonable assurance that the tuner and >> demodulator chip are being set up properly and repsonding. >> >> If you consistently get "cx18-N 843: Video signal: not present" in your >> v4l2-ctl --log-status output but the tuner chip configurations look good >> (i.e. closely match the debug output from my machine), then you really >> have a "red screen" problem versus a problem related to the analog >> tuner/demod chips. >> >> The "red screen" will be a tough one to track down. It's a system level >> issue, likely involving one or more of: >> >> 1. a kernel bug in a driver for some other hardware in your system >> 2. a hardware problem with your PCI chipset when the PCI bus is heavily >> loaded >> 3. a power or thermal condition that causes problems for the HVR-1600 >> hardware >> >> I usually start by recommending that all non-critical linux driver >> modules be blacklisted (or not loaded), and booting the system into >> run-level 3 or lower (no X windows), when trying to isolate the cause in >> any one system. >> >> Regards, >> Andy > > > Sorry for the long silence here, I must have not mentioned it, but the > last round of your patches fixed the red screen problem. The problem > I have been chasing down since is that the card won't tune into > anything. All I ever get from it is static in picture and sound. > Even when showing the static v4l2-ctl shows Video signal: not present. > I bought the card new but no longer have the accessories that came > with it, I will try and find a converter and try that for input. > Trying the card on windows will be tough but I will try and have that > done in a week. Thanks for all your help and patience. :) >
I was able to get a video signal off of the card yesterday. I believe that my motherboard suffers from the timing issue and when I remove add re-add the modules things start to come together. MythTV still isn't working but at least I know kernel and hardware are fine. Thanks so much for all of your help. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
