bttv tuner

Kostas Sfakiotakis kostassf at cha.forthnet.gr
Tue Feb 1 23:54:47 UTC 2005


Greetings Eric ,

I am using Fedora Core 1 with a Pinnacle PCTV but with the bt848 chip .
I might be able to give you a couple of pointers which might help you with
your problem .

Eric Tanguy wrote:

>>>>Now the problem is that i receive nothing using tvtime.
>>>>I have this in demsg :
>>>>Linux video capture interface: v1.00
>>>>bttv: driver version 0.9.15 loaded
>>>>bttv: using 8 buffers with 2080k (520 pages) each for capture
>>>>bttv: Bt8xx card found (0).
>>>>ACPI: PCI interrupt 0000:01:07.0[A] -> GSI 11 (level, low) -> IRQ 11
>>>>bttv0: Bt878 (rev 17) at 0000:01:07.0, irq: 11, latency: 64, mmio:
>>>>0xeb800000
>>>>bttv0: detected: Pinnacle PCTV [card=39], PCI subsystem ID is 11bd:0012
>>>>bttv0: using: Pinnacle PCTV Studio/Rave [card=39,autodetected]

The above lines indicate that you tv card has been succesfully identified
as card number 39 .


>>>>bttv0: gpio: en=00000000, out=00000000 in=00fff3ff [init]
>>>>tda9885/6/7: chip found @ 0x96
>>>>bttv0: i2c: checking for MSP34xx @ 0x80... not found
>>>>bttv0: pinnacle/mt: id=4 info="PAL+SECAM / mono" radio=no
>>>>bttv0: using tuner=33

Here it says that it is going to use tunner number 33 , but i don't 
recall you saying that
you put in your modprobe.conf a line saying

options card=39 tuner=33


>>>>bttv0: i2c: checking for MSP34xx @ 0x80... not found
>>>>bttv0: i2c: checking for TDA9875 @ 0xb0... not found
>>>>bttv0: i2c: checking for TDA7432 @ 0x8a... not found

here it simply searches for some types of tv tuners

> 
> In fact, if i put the tuner to the right channel in windows and just
> reboot to linux i can view the same channel under tvtime but i'm not
> able to change channel. It seems to do nothing on the tuner to change
> channel. 

Your inability to change the channel , while you are able to view the 
last channel
set by the Windows equivalent programm indicates that the problem is 
with the tuner setting .
Could you please reexamine your /etc/modprobe.conf and tell me what the 
tunner=xx says
( xx is a number  taken from /Documentation/video4linux/bttv/CARDLIST , 
the path is from
the top level directory of the source of your kernel , for example

/usr/local/src/linux-2.429/Documentation/video4linux/bttv/CARDLIST ,
where /usr/local/src/ is where i have the source code of kernel 2.4.29 
taken from kernels.org


Kind Regards,
   Kostas





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