Re: [Bugme-new] [Bug 9458] New: digital camera not recognised properly by the kernel when KDE is running

[Vasilis Vasaitis <v.vasaitis@xxxxxxxxxxxx>]

On Mon, Nov 26, 2007 at 09:46:23PM -0500, Alan Stern wrote:

..[edited]..

> The key item here is the "Driver=(none)" field.  Something has unbound 
> usb-storage from the device, probably via usbfs.

> I was looking for a usb-storage process, but it's evident that we won't 
> see one.

> >   I've also tried your usbcore.usbfs_snoop=y suggestion, and I've
> > attached the kernel output when it's turned on to the bug page. Not
> > sure if it's illuminating in any way. I'll also try Oliver's
> > CONFIG_USB_DEBUG suggestion as soon as I find some time.
> 
> Boy, that output is hard to interpret.  It leads me to wonder if the 
> dump is being done correctly...  And unfortunately it doesn't include 
> the name of the current process.  Well, we can fix that.

> It wouldn't be surprising to find that the offending process is one of
> those listed above, like kio_camera.  It may think your camera is in
> PTP mode even when that's not the case.

  OK, I've patched the kernel as you suggested and also enabled
CONFIG_USB_DEBUG. I've attached logs on the bug page both for the UMS
and the PTP case. Well, from the UMS case, I guess you won't be
surprised to see these in the output:

Nov 28 01:18:28 arakis kernel: usb 2-6: kio_kamera: usbdev_ioctl: GETDRIVER
Nov 28 01:18:28 arakis kernel: usb 2-6: kio_kamera: usbdev_ioctl: IOCTL
Nov 28 01:18:28 arakis kernel: usb-storage 2-6:1.0: disconnect by usbfs

  Actually this time I did manage to get it to work in the PTP case
(embarrassing), with programs like gphoto2 or KDE's own digikam. So I
guess it's mostly the UMS case that KDE is screwing up (though it
doesn't pop up the usual "device connected" dialog in either case).

  So I guess it's not really a kernel bug eh? Thanks for the debugging
help though.

Cheers,
Vasilis

-- 
Vasilis Vasaitis
"A man is well or woe as he thinks himself so."



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