Cannot access digital camera as a regular user

vasudevadas · 01-04-2007, 04:28 PM

Hi all,

I have been struggling to get my Canon IXUS 40 to work with my machine after I upgraded to Slackware 11.

I eventually figured out that Hotplug didn't work in the 2.6.18 kernel, and that Udev was the way to do it.

I followed some instructions in this thread:
http://www.linuxquestions.org/questi...post2440669://

and now I am at the stage where gphoto2 sees my camera when I am root:

Code:

root@radhagovinda:/home/rich# gphoto2 --auto-detect
Model                          Port
----------------------------------------------------------
Canon Digital IXUS 40 (PTP mode) usb:

but not when I am a regular user:

Code:

rich@radhagovinda:~$ gphoto2 --auto-detect
Model                          Port
----------------------------------------------------------
rich@radhagovinda:~$

I have tried both the following in my /etc/udev/rules.d/camera.rules file:

Code:

SYSFS{idVendor}=="04a9", SYSFS{idProduct}=="30bf", MODE="0660", GROUP="users", R
UN+="/etc/hotplug/usb/usbcam"

and:

Code:

SYSFS{idVendor}=="04a9", SYSFS{idProduct}=="30bf", MODE="0660", GROUP="users",
SYMLINK+="camera"

but neither work. Can anyone suggest what might be wrong?

TSquaredF · 01-04-2007, 06:34 PM

I have a couple of questions. First, is user "rich" a member of group "users"? Probably that's not worth asking, but in my case, the problems wind up being obvious. Secondly, when you are "rich", does the device get created when you plug in your camera? Using the second rule, check the symlink, both as root & rich. That's the only reason I put the symlink in my rule, so I could find the device, as I had no idea what its name was.
Regards,
Bill

vasudevadas · 01-05-2007, 04:13 PM

Okay. Now it works. The only thing I have done since I posted the thread is turned my computer off, gone to bed, been to work and back and turned the machine back on again.

I don't understand. Sorry about that.

BTW, I figured a way of finding out what the device names are. Do:

Code:

#ls -l /dev >dev1

Then plug in your device, and do:

Code:

#ls -l /dev >dev2
#diff dev1 dev2

TSquaredF · 01-05-2007, 05:14 PM

Good. I'm glad it works. I've been having trouble with my camera cable & have moved to a card reader for moving my pictures. Of course, you can delete the symlink from your rule, if you want to.
Regards,
Bill