Same problem with a USB 2 port (this is on a Sony VAIO laptop that has two USB3 and one USB2 ports).
Here is the log, taken from Ubuntu 13.04 using USB2. Btw, I've opened a ticket for this on SF as well: https://sourceforge.net/p/gphoto/bugs/944/ ** Attachment added: "gphoto-canon40d-usb2.log" https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/1094888/+attachment/3583533/+files/gphoto-canon40d-usb2.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gimp in Ubuntu. https://bugs.launchpad.net/bugs/1094888 Title: GIMP: Could not mount Canon Digital Camera To manage notifications about this bug go to: https://bugs.launchpad.net/libgphoto/+bug/1094888/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
