I have a Hauppauge WintTV PVR PCI card. This is the PVR card that doesn't use ivtv, because it's based on the BT878 chip. I had it working with MythTV r4, but was screwing with things and ended up screwing things up enough that I set it up from scratch with r4v3 yesterday.

I have no sound coming into the inputs on my Sound Blaster Live Value card from the WinTV PVR card. I have the external Line Out on the WinTV wired to the Line In on the Sound Blaster and I have the internal CD Audio cable version tied into the CD input on the Sound Blaster as well. In r4 before, this provided the PVR audio on both my Line In and CD inputs fine.

Now, I have confirmed that the Sound Blaster inputs are working by hooking them up to other line level sound sources, but there is no sound coming from the PVR card's audio outputs. I have video just fine.

Is there something in the bttv driver that is supposed to enable the sound output of the PVR card? I have tried using both the btaudio and tvaudio modules (tvaudio was setup by KnoppMyth) but still no luck. The btaudio one seems to find the bttv audio devices according to dmesg, but video becomes screwed up color-wise when I use that one. Here's my lsmod output:

Module Size Used by Not tainted
snd-emu10k1 60708 0
snd-pcm 56000 0 [snd-emu10k1]
snd-timer 14088 0 [snd-pcm]
snd-hwdep 4576 0 [snd-emu10k1]
snd-util-mem 1136 0 [snd-emu10k1]
snd-page-alloc 4316 0 [snd-emu10k1 snd-pcm]
snd-rawmidi 13088 0 [snd-emu10k1]
snd-seq-device 3824 0 [snd-emu10k1 snd-rawmidi]
snd-ac97-codec 32832 0 [snd-emu10k1]
apm 9544 1 (autoclean)
nfs 71196 1 (autoclean)
lockd 46512 1 (autoclean) [nfs]
sunrpc 68480 1 (autoclean) [nfs lockd]
autofs4 9332 0 (unused)
af_packet 14632 0
agpgart 42852 0 (unused)
via-rhine 12912 1
mii 2176 0 [via-rhine]
crc32 2848 0 [via-rhine]
emu10k1-gp 1288 0 (unused)
gameport 1356 0 [emu10k1-gp]
tuner 12072 1 (autoclean)
tvaudio 13064 0 (autoclean) (unused)
bttv 108940 1
video-buf 10848 0 [bttv]
btcx-risc 2216 0 [bttv]
i2c-algo-bit 7048 1 [bttv]
i2c-core 12452 0 [tuner tvaudio bttv i2c-algo-bit]
videodev 6016 3 [bttv]
v4l2-common 3104 0 [bttv]
snd-mixer-oss 11640 0
snd 27940 0 [snd-emu10k1 snd-pcm snd-timer snd-hwdep snd-util-mem snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer-oss]
soundcore 3524 3 [bttv snd]
serial 44708 0
usb-uhci 22960 0 (unused)
usbcore 59980 0 [usb-uhci]
rtc 7432 1
ext3 65604 3
jbd 47952 3 [ext3]


Any ideas anyone?? I feel like I'm missing something obvious.
-N

the video color screwup is a bug in the version of bttv that is used in R4V3 and it will hit sooner or later on any bttv card, so you should fix that first, and maybe the sound will come around when you do. You could try using the pchdtv kernel it doesn't have v4l2.

Still no luck... here's the relevant section of dmesg - maybe that helps? I seem to remember needing msp3400 before, but maybe I'm remembering wrong as it's been awhile since I set this up. It doesn't look like it's actually finding the audio capture device, but lspci sees it (00:09.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)).

bttv: driver version 0.7.108 loaded
bttv: using 4 buffers with 2080k (8320k total) for capture
bttv: Bt8xx card found (0).
PCI: Found IRQ 3 for device 00:09.0
PCI: Sharing IRQ 3 with 00:09.1
PCI: Sharing IRQ 3 with 00:10.1
bttv0: Bt878 (rev 17) at 00:09.0, irq: 3, latency: 32, mmio: 0xee000000
bttv0: detected: Hauppauge WinTV/PVR [card=80], PCI subsystem ID is 0070:4500
bttv0: using: Hauppauge WinTV PVR [card=80,autodetected]
Unable to load '/usr/lib/video4linux/hcwamc.rbf'.
bttv0: altera firmware not found [/usr/lib/video4linux/hcwamc.rbf]
tuner: chip found @ 0xc2
i2c-core.o: client [(tuner unset)] registered to adapter [bt848 #0](pos. 0).
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: Hauppauge eeprom: model=45231, tuner=Philips FM1236 (2), radio=yes
bttv0: using tuner=2
tuner: type set to 2 (Philips NTSC (FI1236,FM1236 and compatibles))
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known chips: tda9840,tda9873h,tda9874h/a,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54 (PV951),ta8874z
i2c-core.o: driver generic i2c audio driver registered.
bttv0: PLL: 28636363 => 35468950 .. ok
bttv0: registered device video0
bttv0: registered device vbi0
bttv0: registered device radio0

I had a similer problem running mythtv under Fedora. Everything worked fine until I installed the NVIDIA driver. I never found a soultion so I can't help you but if you just installed an NVIDIA driver that may point you to a soultion.

btaudio only works with some tuner cards. Do you have line in on your soundcard set to record? Someone else had this same problem not too long ago(have you search the forum?), in addition I do believe the MythTV docs mention this...

_________________
cesman

When the source is open, the possibilities are endless!

When I had this problem, I tracked it down to a problem with the motherboard chipset and audio actually. I ended up just giving up on the mobo and throwing it in my desktop. My desktop board is now in the Myth box and so it's working fine now.

Anyway, I never tracked down the exact problem, but ultimately, the different mobo fixed it. And my desktop has lousy sound quality ;-( but Myth works fine ;-)
-N

I ran into this problem again and this time I was able to fix it. The important lines from dmesg above were:

You can get this file from a zipfile on the CD that came with my PVR PCI. The zipfile is at /cdrom/pvr/pvr45xxx.EXE. Open that archive, get the file HCWAMC.RBF out of it and move it to /usr/lib/video4linux/hcwamc.rbf.

Capitals matter in the name and I had to added the video4linux directory...



That ought to do it. (needs to be run as root...)
-N