On Tue, Apr 19, 2011 at 8:21 PM, Andy Walls <awalls@xxxxxxxxxxxxxxxx> 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. :) Eric -- 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
