Linux is by default a multi-user system, so it has to have a policy to determine who can access various devices. This includes those that can be plugged into to a USB port. For devices known to the operating system (which these days includes most digital cameras, scanners, MIDI interfaces etc.), a logged-in user will be granted access automatically. However, for devices that the OS doesn't recognize (even if there is software on it that can use it), this is not the case. It is possible to configure Linux to reverse this policy and grant all users access to all devices, but this is not recommended for security reasons.

Using the Tranzport on Linux requires a couple of extra steps to enable non-administrative users to access the device. First, you need to login as the administrative user ("root"). Then put the following into a new file called /etc/hotplug/usb/tranzport #!/bin/sh if [ $ACTION = "add" ] && [ -f $DEVICE ] ; then chmod 0666 $DEVICE fi exit 0 Then make sure that the file is executable by running chmod +x /etc/hotplug/usb/tranzport Second, edit the file /etc/hotplug/usb.usermap by adding the following 2 lines to the end of it (make sure that the 2nd line is not split across multiple lines, even though it is very long): # Frontier Design Tranzport tranzport 0x0000 0x165b 0x8101 0x0000 0x0000 0x00 0x00 0x00 0x00 0x00 0x00 0x00000000 After doing these steps, the next time you plugin your Tranzport it will be accessible to you as a regular user.