I'm using redhat linux 9. I ran gtkam under root and wihtout doing anything else, it auto detected the digital camera and was able to access pictures. However, when logged in as a normal user, it says "Could not claim USB device"
Running gphoto2 --capture-image give the message
*** Error ***
An error occurred in the io-library ('Could not claim the USB device'): Could not claim interface 0 (Operation not permitted). Make sure no other program or kernel module (e.g. dc2xx or stv680) is using the device and you have read/write access to the device.
ERROR: Could not capture.
*** Error ('Could not claim the USB device') ***
How can regular users get permission to access USB ports? I've seen intstructions about changing the /etc/hotplug/usb/usbcam file but they don't work.