[linux-avc2210k] Re: segfault when running avcctrl

  • From: Dr J A Gow <J.A.Gow@xxxxxxxxxxxxxxxxx>
  • To: linux-avc2210k@xxxxxxxxxxxxx
  • Date: Thu, 06 Apr 2006 20:06:15 +0100

Ok, I forgot to tell you all something!

The device is probably working. The device registers as a different name and udev will create the required /dev/avcapX node :- providing you add the following line to /etc/udev/rules.d/10-local.rules (this is what I forgot to mention):

KERNEL=="avc2x10k*",  NAME="avcap%m", GROUP="<whatever-your-group-is"

Then restart udev by typing 'udevstart' at root.

Replug the device, and the avcap0 device should appear. It may be worth
checking the permissions and changing them if necessary. Then avcctrl will run.

        John.








John Dally wrote: 
OK - I now have the device and have my next problem, which may well be caused 
by my misuse of the tools. Are there docs how to use them anywhere? Here is 
what I've tried...

I've put the firmware in place:-
ls /var/lib/firmware
avcuwm1n.ux  avcuwm1p.ux  avcuwm2n.ux  avcuwm2p.ux  avcuwram.ux

I've created the device with:-
mknod /dev/avcap0 c 199 0
chmod a+rw /dev/avcap0

I get the following in /var/log/messages when I plug in the device and modprobe 
avc2210k:-
Apr  6 18:52:47 jdally usb 2-6: new high speed USB device using ehci_hcd and 
address 7
Apr  6 18:52:48 jdally usb 2-6: configuration #1 chosen from 1 choice

Apr  6 18:52:53 jdally AVC2x10K : MPEG capture driver starting
Apr  6 18:52:53 jdally usbcore: registered new driver avc2x10k

Which looks promising, but when I run avcctrl with -v -i 0 - I get:-

lib init
AVCCONFInit running
retrieve int array
string =1,2
got int array rc=0
retrieve int array
string =3,4
got int array rc=0
error handler init running
aarg
DEVOpenDevice - dpath=|/dev/avcap0|  <-- extra debug I added to find out which 
device is used
error: unable to open device (null)
lib term


    Any ideas??

                Cheers

                        John








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