[ale] Logitec USB Quickcam questions?

[Robert L. Harris]

Thus spake Geoffrey (esoteric at 3times25.net):

> Robert L. Harris wrote:
> >
> >Yup.
> >
> >{0}:/usr/src/kernel/qc-usb-0.6.0>lsmod
> >Module                  Size  Used by
> >quickcam               65180  0 
> >8250                   21216  0 
> >serial_core            23488  1 8250
> >snd_emu10k1            95620  1 
> 
> The quickcam module I used to see loaded with the early versions of the 
> driver that you'll find from my sourceforge reference was quickcam.o 
> It's likely that's the one that's loading.  I've actually got olde 
> source from two different versions of that driver, you're welcome to 
> them if you'd like to try them, but I'd suspect the version found at 
> sourceforge would be a better solution.

I got the latest source from the web site I was given.  It compiled
clean on my 2.6.1-bk4 kernel but nothing useful from the -scan.

> 
> >
> >
> >I also tried with the pwc module.  No go.
> >
> >This struck me as odd though.
> >
> >drivers/usb/core/usb.c: registered new driver quickcam
> >request_module: failed /sbin/modprobe -- char-major-81-0. error = 256
> 
> I'm not sure what 'error = 256' means, but that dev major/minor 
> corresponds to /dev/video0 on my box.  Is it possible you don't have 
> perms to use it?  Try it as root?

Doing my tests as root.  Once I get it working I'll put a normal user in
the right group.

> >
> >I did a "rm -f /dev/video /dev/video0 /dev/video1"
> 
> I don't know if that was a good idea. :(

devfs, it'll restore at next reboot.

> 
> >and re-installed the
> >module and found this in dmesg:
> >
> >drivers/usb/core/usb.c: deregistering driver quickcam
> >drivers/usb/core/usb.c: registered new driver quickcam
> 
> That looks promising.  Did you get it before?

Nope, didn't get that until I removed the /dev/video, etc.


> 
> >
> >Also:
> >
> >root at spirit
> >{0}:/usr/src/kernel/qc-usb-0.6.0>xawtv --hwscan
> >This is xawtv-3.90, running on Linux/i686 (2.6.1-bk4)
> >can't open /dev/video0: No such device
> >v4l-conf had some trouble, trying to continue anyway
> >v4l2: open /dev/video0: No such device
> >v4l2: open /dev/video0: No such device
> >v4l: open /dev/video0: No such device
> >no video grabber device available
> 
> That would seem to have been caused by your previous removal, you might 
> recreate those devices and try it as root.

I did this with the /dev/video and /dev/video0 recreated per the
driver's README.

> >{1}:/usr/src/kernel/qc-usb-0.6.0>v4l-conf 
> >v4l-conf: using X11 display :0.0
> >dga: version 2.0
> >mode: 1280x960, depth=16, bpp=16, bpl=2560, base=0xd8000000
> >can't open /dev/video0: No such device
> >
> >
> >root at spirit
> >{1}:/usr/src/kernel/qc-usb-0.6.0>ls -la /dev/video
> >lrwxr-xr-x    1 root     root           11 Jan 18 21:32 /dev/video ->
> >/dev/video0
> >
> >root at spirit
> >{0}:/usr/src/kernel/qc-usb-0.6.0>ls -la /dev/video0
> >crw-rw-rw-    1 root     root      81,   0 Jan 18 21:31 /dev/video0
> 
> So here you're saying the device does exist?  Hmmm, this is confusing to 
> me.  I would have expected that error would have been a perm error, not 
> a 'no such device' error.  Try running it as root?

As root:
0}:/lib/modules/2.6.1-bk4/kernel/drivers/usb/media>insmod /usr/src/kernel/qc-usb-0.6.0

dmesg:
  drivers/usb/core/usb.c: registered new driver quickcam

root at spirit
{127}:/lib/modules/2.6.1-bk4/kernel/drivers/usb/media>ls -la /dev/video
lrwxr-xr-x    1 root     root           11 Jan 18 21:34 /dev/video ->
/dev/video0

root at spirit
{0}:/lib/modules/2.6.1-bk4/kernel/drivers/usb/media>ls -la /dev/video0 
crw-rw-rw-    1 root     root      81,   0 Jan 18 21:34 /dev/video0

root at spirit
{0}:/lib/modules/2.6.1-bk4/kernel/drivers/usb/media>xawtv -hwscan
This is xawtv-3.90, running on Linux/i686 (2.6.1-bk4)
looking for available devices
port 53-53
    type : Xvideo, image scaler
    name : NV Video Overlay


That's it.





:wq!
---------------------------------------------------------------------------
Robert L. Harris                     | GPG Key ID: E344DA3B
                                         @ x-hkp://pgp.mit.edu
DISCLAIMER:
      These are MY OPINIONS ALONE.  I speak for no-one else.

Life is not a destination, it's a journey.
  Microsoft produces 15 car pileups on the highway.
    Don't stop traffic to stand and gawk at the tragedy.
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