On Sun, 2008-11-30 at 07:56 +0100, . . wrote: > Andy, > > After I had NTSC audio for both cards for a few hours I rebooted and got > /dev/video0 ---> red screen no audio on NTSC > /dev/video1 ---> no audio > > Rebooted a couple of more times and now I'm back to the original issue > /dev/video0 ---> no NTSC audio > /dev/video1 ---> NTSC audio > > I also tried: > rmmod -f cx18 > modprobe cx18 cardtype=0,-1 > mplayer /dev/video0 ---> NTSC audio on 2nd recording (No NTSC audio on 1st > recording) > > rmmod -f cx18 > modprobe cx18 cardtype=-1,0 > mplayer /dev/video1 ---> NTSC audio on 2nd recording (No NTSC audio on 1st > recording) > > For both mplayer tries above, on the 1st recording, after a while, perhaps > 10-30 seconds, very short > bursts of audio came through, and the V: and A: became desyched.
So to summarize: When setting up only one card at a time with the "cardtype=" settings, the one card always produces audio on captures after the first. (you may want to use the -cache 8192 parameter with mplayer by the way) Did I get that right? > I'll try the patch soon or upgrade to the latest cx18-bugfix if it's added. I doubt I'll add the patch to the cx18-bugfix repo since everything there is in the main repo (except for 1 q_io experiment). I'm waiting for changes to be pulled from my v4l-dvb repo, which has the patch, for the main repo. > Now that the issue is back here are the registers: (see below) I've taken a look, and many of the audio related registers that the audio microcontroller are different. It also looks like something may have gone wrong with the audio microcontroller firmware download and it went undetected. You didn't get any "unable to load firmware v4l-cx23418-dig.fw" messages in you logs I assume. Coupled with the red screen symptom you mention and that fact audio works with one card at a time, I'm really going to blame PCI bus errors that my recent changes let inadvertently let slide by. Try the patch I sent or use my v4l-dvb repo. If that doesn't work, we'll have to add some debugging to cx18-av-firmware.c to debug the audio microcontroller firmware download. The nice thing is that the problem seems to be moderately reproducable on your system, so we can hunt this down. Regards, Andy _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
