No ALSA devices from snd-bt87x (ProVideo PV150)

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Hello!

I have a BT878-family 4-input a/v capture card.  It was in service and working great a couple of years ago, before I put it on the shelf for a while, and now I'm taking it out of retirement for some light CCTV work.   Video capture (v4l2) from the the card works great, and my four other ALSA devices are all working great -- but on the audio side of the BT card, I get zero ALSA devices.

The bttv module detects the card as:

[ 1062.768422] bttv: 0: detected: Provideo PV150A-1 [card=98], PCI subsystem ID is aa00:1460
[ 1062.768423] bttv: 0: using: ProVideo PV150 [card=98,autodetected]
[ 1062.779217] bttv: 1: detected: Provideo PV150A-2 [card=98], PCI subsystem ID is aa01:1461
[ 1062.779219] bttv: 1: using: ProVideo PV150 [card=98,autodetected]
[ 1062.790159] bttv: 2: detected: Provideo PV150A-3 [card=98], PCI subsystem ID is aa02:1462
[ 1062.790160] bttv: 2: using: ProVideo PV150 [card=98,autodetected]
[ 1062.801118] bttv: 3: detected: Provideo PV150A-4 [card=98], PCI subsystem ID is aa03:1463
[ 1062.801119] bttv: 3: using: ProVideo PV150 [card=98,autodetected]

The snd-bt87x module loads successfully, but nothing for it shows up in "arecord -l" and /proc/asound/cards.


I'm loading snd-bt87x with the module parameters "index=4 id=bttv load_all=1".

The snd-bt87x reports nothing to dmesg or syslog (that I can identify), but modprobe succeeds, and lsmod shows that it is loaded.

I'm attaching the output of "aadebug" in case it's helpful.

I'm not sure what could be escaping me -- help!

Thanks,
Eric
ALSA Audio Debug v0.2.0 - Sun Feb 24 05:15:10 MST 2013
http://alsa.opensrc.org/aadebug
http://www.gnu.org/licenses/agpl-3.0.txt

Kernel ----------------------------------------------------
Linux vs01 3.5.7-gentoo-vs01 #2 SMP Mon Dec 3 15:44:03 MST 2012 x86_64 Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz GenuineIntel GNU/Linux
Advanced Linux Sound Architecture Driver Version 1.0.25.

Loaded Modules --------------------------------------------
snd_bt87x 10531 0 - Live 0xffffffffa00e1000
snd_seq_dummy 1646 0 - Live 0xffffffffa00b2000
snd_seq_oss 27992 0 - Live 0xffffffffa0c57000
snd_seq_midi_event 6412 1 snd_seq_oss, Live 0xffffffffa0c52000
snd_seq 51566 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event, Live 0xffffffffa0c3e000
snd_pcm_oss 38127 0 - Live 0xffffffffa0c2f000
snd_mixer_oss 14680 1 snd_pcm_oss, Live 0xffffffffa0c2a000
snd_usb_audio 120330 0 - Live 0xffffffffa0bf8000
snd_hwdep 6180 1 snd_usb_audio, Live 0xffffffffa0088000
snd_usbmidi_lib 19516 1 snd_usb_audio, Live 0xffffffffa00b7000
snd_rawmidi 20701 1 snd_usbmidi_lib, Live 0xffffffffa00a5000
snd_seq_device 5965 4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi, Live 0xffffffffa004f000
snd_hda_codec_hdmi 24129 4 - Live 0xffffffffa0061000
snd_hda_codec_via 38557 1 - Live 0xffffffffa007d000
snd_hda_intel 25381 0 - Live 0xffffffffa00c7000
snd_hda_codec 97068 3 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel, Live 0xffffffffa011e000
snd_pcm 80965 6 snd_bt87x,snd_pcm_oss,snd_usb_audio,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec, Live 0xffffffffa0090000
snd_timer 20148 2 snd_seq,snd_pcm, Live 0xffffffffa0020000
snd 64476 16 snd_bt87x,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_usb_audio,snd_hwdep,snd_usbmidi_lib,snd_rawmidi,snd_seq_device,snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel,snd_hda_codec,snd_pcm,snd_timer, Live 0xffffffffa003e000
snd_page_alloc 7917 3 snd_bt87x,snd_hda_intel,snd_pcm, Live 0xffffffffa00b4000

Proc Asound -----------------------------------------------
 0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfbffc000 irq 17
 1 [Headset        ]: USB-Audio - Plantronics USB Headset
                      Plantronics Plantronics USB Headset at usb-0000:00:1a.0-1.3, full speed
 2 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xf9cf8000 irq 43
 3 [U0x46d0x825    ]: USB-Audio - USB Device 0x46d:0x825
                      USB Device 0x46d:0x825 at usb-0000:00:1d.0-1.1.1.4, high speed
  1:        : sequencer
  2: [ 2- 1]: digital audio playback
  3: [ 2- 0]: digital audio playback
  4: [ 2- 0]: digital audio capture
  5: [ 2]   : control
  6: [ 0- 9]: digital audio playback
  7: [ 0- 8]: digital audio playback
  8: [ 0- 7]: digital audio playback
  9: [ 0- 3]: digital audio playback
 10: [ 0]   : control
 11: [ 1- 0]: digital audio playback
 12: [ 1- 0]: digital audio capture
 13: [ 1]   : control
 14: [ 3- 0]: digital audio capture
 15: [ 3]   : control
 33:        : timer
00-03: HDMI 0 : HDMI 0 : playback 1
00-07: HDMI 0 : HDMI 0 : playback 1
00-08: HDMI 0 : HDMI 0 : playback 1
00-09: HDMI 0 : HDMI 0 : playback 1
01-00: USB Audio : USB Audio : playback 1 : capture 1
02-00: VT1718S Analog : VT1718S Analog : playback 1 : capture 2
02-01: VT1718S Digital : VT1718S Digital : playback 1
03-00: USB Audio : USB Audio : capture 1
Client info
  cur  clients : 3
  peak clients : 3
  max  clients : 192

Client   0 : "System" [Kernel]
  Port   0 : "Timer" (Rwe-)
  Port   1 : "Announce" (R-e-)
    Connecting To: 15:0
Client  14 : "Midi Through" [Kernel]
  Port   0 : "Midi Through Port-0" (RWe-)
Client  15 : "OSS sequencer" [Kernel]
  Port   0 : "Receiver" (-we-)
    Connected From: 0:1

Dev Snd ---------------------------------------------------
total 0
drwxr-xr-x  2 root root       80 Feb 24 04:30 by-id
drwxr-xr-x  2 root root      120 Feb 24 04:30 by-path
crw-rw----+ 1 root audio 116, 10 Feb 24 04:30 controlC0
crw-rw----+ 1 root audio 116, 13 Feb 24 04:30 controlC1
crw-rw----+ 1 root audio 116,  5 Feb 24 04:30 controlC2
crw-rw----+ 1 root audio 116, 15 Feb 24 04:30 controlC3
crw-rw----+ 1 root audio 116,  9 Feb 24 04:30 pcmC0D3p
crw-rw----+ 1 root audio 116,  8 Feb 24 04:30 pcmC0D7p
crw-rw----+ 1 root audio 116,  7 Feb 24 04:30 pcmC0D8p
crw-rw----+ 1 root audio 116,  6 Feb 24 04:59 pcmC0D9p
crw-rw----+ 1 root audio 116, 12 Feb 24 04:30 pcmC1D0c
crw-rw----+ 1 root audio 116, 11 Feb 24 04:30 pcmC1D0p
crw-rw----+ 1 root audio 116,  4 Feb 24 04:30 pcmC2D0c
crw-rw----+ 1 root audio 116,  3 Feb 24 04:30 pcmC2D0p
crw-rw----+ 1 root audio 116,  2 Feb 24 04:30 pcmC2D1p
crw-rw----+ 1 root audio 116, 14 Feb 24 04:30 pcmC3D0c
crw-rw----+ 1 root audio 116,  1 Feb 24 04:30 seq
crw-rw----+ 1 root audio 116, 33 Feb 24 04:30 timer

CPU -------------------------------------------------------
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174
model name	: Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
cpu MHz		: 3738.174

RAM -------------------------------------------------------
MemTotal:       16423816 kB
SwapTotal:      16777212 kB

Hardware --------------------------------------------------
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
03:00.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
03:00.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
03:01.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
03:01.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
03:02.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
03:02.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
03:03.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
03:03.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
07:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 430] (rev a1)
07:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)

Interupts -------------------------------------------------
           CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7       
  0:        124          0          0     753128          0          0          0          0   IO-APIC-edge      timer
  1:          1          0          0          2          0          0          0          0   IO-APIC-edge      i8042
  8:          0          0          0          1          0          0          0          0   IO-APIC-edge      rtc0
  9:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   acpi
 12:          0          0          0          4          0          0          0          0   IO-APIC-edge      i8042
 14:          0          0          0          0          0          0          0          0   IO-APIC-edge      ata_piix
 15:          0          0          0         80          0          0          0          0   IO-APIC-edge      ata_piix
 16:          0          0      48173          0          0          0          0          0   IO-APIC-fasteoi   ehci_hcd:usb1, nvidia, bttv1
 17:          0          0          0          0      84778          0          0          0   IO-APIC-fasteoi   snd_hda_intel, bttv2
 18:          0          0          0          0          0          0      41478          0   IO-APIC-fasteoi   bttv3
 19:          0          0          0          0         12          0          0          0   IO-APIC-fasteoi   ata_piix, bttv0
 23:          0          0          0          0          0      29392          0          0   IO-APIC-fasteoi   ehci_hcd:usb2
 40:          0          0          0          0          0     126441          0          0   PCI-MSI-edge      ahci
 41:          0          0          0          0          0          0          1          0   PCI-MSI-edge      eth1
 42:          0          0          0          0          0          0          0      40132   PCI-MSI-edge      eth0
 43:        433          0          0          0          0          0          0          0   PCI-MSI-edge      snd_hda_intel
NMI:          1          1          1          1          1          1          1          1   Non-maskable interrupts
LOC:   31262875   31201317   31202958   31183458   30824237   30781650   30835849   30853352   Local timer interrupts
SPU:          0          0          0          0          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0          0          0          0          0   Performance monitoring interrupts
IWI:          0          0          0          0          0          0          0          0   IRQ work interrupts
RTR:          3          0          0          0          0          0          0          0   APIC ICR read retries
RES:     915302     657279     564469     544158     492811     478951     477576     477890   Rescheduling interrupts
CAL:     462322     445104     455853     471387     473404     470217     470093     452386   Function call interrupts
TLB:      11189      11016      11709      11069       7739      10117       8273       7888   TLB shootdowns
TRM:          0          0          0          0          0          0          0          0   Thermal event interrupts
THR:          0          0          0          0          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0          0          0          0          0   Machine check exceptions
MCP:         10         10         10         10         10         10         10         10   Machine check polls
ERR:          0
MIS:          0

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