Re: More Xawtv, or bttv problems

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Hi!

On Sun, 21 Oct 2001, Jeffrey S. Chabot wrote:
> New Error when trying to run xawtv:
> 
> This is xawtv-3.64, running on Linux/i686 (2.4.2-2)
> can't open /dev/video0: No such device
> v4l-conf had some trouble, trying to continue anyway
> v4l2: open /dev/video0: No such device
> v4l: open /dev/video0: No such device
> no video grabber device available
> *Note I have the file: dev/video0
> Is it corrupt?  How can I fix it if it is?  Is there anyway to remove it and 
> reinstall it?

"No such device" probably means no kernel driver was registered at that
device file.

* If you have loaded bttv driver plus a driver for your usb camera there
are two V4L devices simultaneously available. -> Be sure to start xawtv
with the "-c <n>" option to select the device you want.

* Under Redhat 7.1 there is a directory called "/dev/video", but no 
symlink called "/dev/video" to /dev/video0 - as usual for many other
Linux distributions. If this should cause trouble rename the directory to
anything else and create the symlink. (Of course, the device files in
that renamed directory can't be accessed by existing applications any more
then. I don't know exactly but it seems those devices files are only
related to certain MPEG hardware with a EM8300 chip. If you don't use such
a card,....)

> Error when I try modprobe bttv:
> 
> /lib/modules/2.4.2-2/kernel/drivers/media/video/bttv.o: unresolved symbol 
> __io_virt_debug
> [...]
> /lib/modules/2.4.2-2/kernel/drivers/media/video/bttv.o: unresolved symbol 
> init_mm
> /lib/modules/2.4.2-2/kernel/drivers/media/video/bttv.o: insmod 
> /lib/modules/2.4.2-2/kernel/drivers/media/video/bttv.o failed
> /lib/modules/2.4.2-2/kernel/drivers/media/video/bttv.o: insmod bttv failed

"depmod -a" before the first "modprobe bttv".


Bye,
     Rolf





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