I managed to make an old parallel port scanner work in ubuntu 11.04 with SANE.
Everything's perfect but one thing: scanner applications work only if they are executed as a root.
After further researching, I've found the cause is that only the root has read and write permissions on the device /dev/parport0 which is my parallel port.
If I set the right permissions giving sudo chmod a+rw /dev/parport0 I solve my problem, but just untill next reboot... the system resets root only permissions at each restart.
I would like to make that change permanent... what can I do?
Somewhere I read that I must put myself into the group which has access to the device...but I'm quite a newbie and I don't understand what I have to do.