[Pkg-phototools-devel] Bug#608341: [libgphoto2-2] please add support for Canon IXUS 130 (lsusb -v attached)

[Andreas Metzler]

On 2011-01-02 Bastian Venthur <venthur at debian.org> wrote:
> Thanks for your patch, it works. There are two things:

> 1. With your patch I'm able to access the camera as Canon IXUS 130 in
> KDE's filemanager, w/o your patch I'm only able to access it with
> gphoto2 (Why?). W/o your patch the camera is also correctly recognized
> in KDE's filemanager but I cannot access the images due to some "unknown
> device"-like error.

> 2. The *real* problem was actually that KDE's filemanager and gphoto2
> were not able to access the device, there was an error message like:

>   ('Could not lock the device'): Camera is already in use.

> I didn't really pay attention to this message since it never happened
> with my last camera, and I knew I did not mount the camera. Anyways,
> after reading a few bugreports someone pointed to this message and said
> he solved the problem by killing all gvfs processes. I looked and
> noticed that I had rhythmbox open and the camera was already shown there
> as a media device (although it was not listed as mounted device via
> "mount"). Closing rhythmbox allowed me to access the camera w/o the
> above error message.

> Do you think it is a bug in libgphoto or rhytmbox or something else?

Hello,

I am largely udev-agnostic, and totally do not know how KDE changes
things. However I think that the following should be true:

A With 2.4.10.1-3 you should be able to access the camera as root with
  gphoto but should not be able to do so as normal user.

B The patch should fix the issue for normal users.

C On a sidenote: Devices accessed through gphot generally will not be
  listed by mount, unless you are using gphotofs or similar tricks.

I realize that A contradicts your observations ("w/o your patch I'm
only able to access it with gphoto2"). Could you verify it by
downgrading to 2.4.10.1-3, rebooting, and checking whether gphoto
works (as non-root)? Any custom udev rules you added for the camera
should be removed before eboot.

thanks, cu andreas