Hi, Is this problem still happenning for you? I am using HPLIP-2.8.6 on an Unstable box and everything looks fine wrt SIP (v4.7.6) being detected. If this most recent HPLIP package has fixed the problem then this report can be closed because the v2.8.4 package it was reported against is no longer in Debian (Testing has v2.8.6). - Bruce