[mythtv-users] bt878 audio problems
David Frey
dpfrey at shaw.ca
Wed Nov 3 05:24:16 UTC 2004
I have this card (from
kernel_source/Documentation/video4linux/CARDLIST.bttv)
card=58 - Askey CPH060/ Phoebe TV Master Only (No FM)
I am having trouble getting any audio when I watch or record TV. I have
the snd_bt87x module installed. My understanding is that this should
allow me to record directly from the tv-tuner card and should not
require a patch cable.
Under "capture cards" in mythtv-setup, I have /dev/dsp1 selected as my
audio device for recording. I'm not really sure whether this is
correct, or how to verify whether it is correct or not. What I do know
is that /dev/dsp is my soundcard.
alsamixer -c 1 is showing the tv tuner. "capture" is at 73 and "TV
tuner" is selected as the capture device rather than "Mic/Line".
If anyone has any ideas how I can solve this problem or narrow the
scope, please tell me. Also, let me know if there is any other
information that would be useful.
Thanks,
David Frey
Here is my lsmod output:
$ lsmod
Module Size Used by
ide_cd 42080 0
cdrom 40156 1 ide_cd
sg 34464 0
scsi_mod 83584 1 sg
af_packet 18248 2
snd_bt87x 14536 0
3c59x 38632 0
snd_cmipci 33156 2
snd_pcm_oss 54312 1
snd_mixer_oss 19904 2 snd_pcm_oss
snd_pcm 94920 3 snd_bt87x,snd_cmipci,snd_pcm_oss
snd_page_alloc 11720 2 snd_bt87x,snd_pcm
snd_opl3_lib 10688 1 snd_cmipci
snd_timer 25540 2 snd_pcm,snd_opl3_lib
snd_hwdep 9476 1 snd_opl3_lib
snd_mpu401_uart 8000 1 snd_cmipci
snd_rawmidi 24740 1 snd_mpu401_uart
snd 52388 10
snd_bt87x,snd_cmipci,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi
ohci_hcd 17924 0
usbcore 116260 3 ohci_hcd
evdev 9344 0
sis_agp 8260 1
agpgart 34472 1 sis_agp
tuner 19920 0
tvaudio 22348 0
bttv 153420 0
video_buf 22020 1 bttv
i2c_algo_bit 9800 1 bttv
v4l2_common 6208 1 bttv
btcx_risc 4808 1 bttv
i2c_core 24144 4 tuner,tvaudio,bttv,i2c_algo_bit
videodev 9728 1 bttv
soundcore 10016 4 snd,bttv
unix 28596 308
Here is my lspci -v for my tv-tuner card:
0000:00:0c.0 Multimedia video controller: Brooktree Corporation Bt878
Video Capture (rev 02)
Subsystem: Askey Computer Corp. MagicTView CPH060 - Video
Flags: bus master, medium devsel, latency 32, IRQ 5
Memory at fb000000 (32-bit, prefetchable) [size=4K]
0000:00:0c.1 Multimedia controller: Brooktree Corporation Bt878 Audio
Capture (rev 02)
Subsystem: Askey Computer Corp. MagicTView CPH060 - Audio
Flags: bus master, medium devsel, latency 32, IRQ 5
Memory at fa800000 (32-bit, prefetchable) [size=4K]
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