Sam,
Please do this:
ls -l /dev/ttyUSB0
Send back the output.
Also send back the output of this when you are using your user (regular)
account:
groups
It is important that you are in the group that owns /dev/ttyUSB0
I'm not using Ubuntu but Arch Linux, but here is my output to show you:
ls -l /dev/ttyUSB0
crw-rw---- 1 root *uucp* 188, 0 Mar 21 09:40 /dev/ttyUSB0
[djringjr@n1ea ~]$ groups
video *uucp* wheel djringjr
I've made *uucp *bold so you can see the important part.
I believe /dev/ttyUSB0 in Ubuntu is owned by root tty - don't change it!
Just make sure you are a member of whatever group that owns /dev/ttyUSB0.
Different distros handle devices slightly differently. The point is that
if you are executing CHIRP and you are not a member of the group that owns
the /dev/ttyUSB0 device, it will not work.
To add a user to a group - whatever group owns the ttyUSB0 -
sudo adduser user group
Where user is your user name and group is the group that owns ttyUSB0
73
DR
N1EA