I've seen this problem too. I personally think it should either re-scan every time or simply not pretend it knows what devices are installed. The trouble is that scanning every time might increase startup time a lot.
** Changed in: gimp (Ubuntu) Status: Unconfirmed => Confirmed -- Should always re-query xsane plugin at startup https://launchpad.net/bugs/47029 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs