Hi! I'm writing concerning this post...=20 http://www.mostang.com/pipermail/sane-devel/2002-October/015796.html. I had the exact same problem; I've scanned successfully with scanimage an= d=20 xsane, then I didn't use the scanner for a couple of days. When I wanted = to=20 scan again I simply got "device busy". I even re-compiled the kernel seve= ral=20 times thinking that it had something to do with the USB scanner module, e= tc.
The solution was simple though: delete "/tmp/canon.cal", that's it. I hav= en't=20 checked the "canon630u" source code yet, or if this bug has been fixed, j= ust=20 thought I'd let you know. Best regards, Michel Blomgren
