Andrew Perrin wrote:
Greetings-
I use a TV-in card that is driven by the bttv module. Under kernel
2.4.x it worked fine; now, under 2.6.x, the video works fine but the
audio is a constant "buzz". Perhaps more interesting, muting the audio
makes the buzz stop, which suggests perhaps that the audio decoder is
set wrong (?) - any advice on where to start?
Here's lspci:
0000:00:0c.0 Multimedia video controller: Brooktree Corporation Bt878
Video Capture (rev 11)
0000:00:0c.1 Multimedia controller: Brooktree Corporation Bt878 Audio
Capture (rev 11)
and lsmod:
joehill:~# lsmod
Module Size Used by
tuner 27944 0
tda9887 14296 0
bttv 157136 0
tveeprom 13208 1 bttv
nvidia 3919996 12
vmnet 29796 3
vmmon 175596 0
thermal 18760 0
fan 5956 0
button 8400 0
processor 23972 1 thermal
smbfs 69432 3
ide_cd 42884 0
8250_pnp 8512 0
8250 24228 1 8250_pnp
serial_core 22272 1 8250
snd_via82xx 27808 0
snd_mpu401_uart 7360 1 snd_via82xx
snd_rawmidi 25504 1 snd_mpu401_uart
snd_seq_device 8844 1 snd_rawmidi
ehci_hcd 34824 0
usblp 13184 0
uhci_hcd 32080 0
video_buf 22020 1 bttv
firmware_class 10432 1 bttv
i2c_algo_bit 9928 1 bttv
btcx_risc 5000 1 bttv
rtc 12344 0
it87 27808 0
eeprom 7696 0
lm90 14244 0
i2c_sensor 4096 3 it87,eeprom,lm90
i2c_isa 1984 0
i2c_viapro 9424 0
i2c_core 24656 11
tuner,tda9887,bttv,tveeprom,i2c_algo_bit,it87,eeprom,lm90,i2c_sensor,i2c_isa,i2c_viapro
cisco_ipsec 394732 1
snd_ac97_codec 83000 1 snd_via82xx
snd_pcm_oss 54496 0
snd_mixer_oss 19968 1 snd_pcm_oss
snd_pcm 93448 3 snd_via82xx,snd_ac97_codec,snd_pcm_oss
snd_timer 24644 1 snd_pcm
snd 53988 9
snd_via82xx,snd_mpu401_uart,snd_rawmidi,snd_seq_device,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
snd_page_alloc 9988 2 snd_via82xx,snd_pcm
cpuid 3140 0
vfat 14208 0
fat 52828 1 vfat
openafs 607712 3
sd_mod 17040 0
visor 18956 0
usbserial 29032 1 visor
usb_storage 54208 0
usbcore 121596 7
ehci_hcd,usblp,uhci_hcd,visor,usbserial,usb_storage
sg 35040 0
st 41824 0
sr_mod 18660 0
cdrom 40480 2 ide_cd,sr_mod
sym53c8xx 85332 0
scsi_transport_spi 20352 1 sym53c8xx
scsi_mod 131208 7
sd_mod,usb_storage,sg,st,sr_mod,sym53c8xx,scsi_transport_spi
pcspkr 3460 0
Hi Andrew,
I use a bttv-based card under 2.6* with no problems. The question is,
audio on the board varies. Some cards have tda* modules (look at your
lsmod), some don´t. From my understanding, support to this is
independent from the bttv driver. I don´t have a tda* chip on my board,
so I don´t have this module.
Try to tweak the modprobe command to insert bttv, and see if it improves
anything. My one is:
modprobe bttv card=37 radio=1 tuner=2 gbuffers=32
More options on the bttv docs.
*gbuffers is not necessary.
I can post you my dmesg, as soon as I get home.
Good luck.
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
