In Pardus, scangearmp says, cannot find available drivers.
pardus2011 ~ # pisi info scangearmp
Package found in pardususer.de repository:
Name : scangearmp, version: 1.60, release: 2
Summary : Scanning front-end GUI for Canon Multifunction Inkjet Printer.
Description : This ScanGear MP provides scanning functions for Canon Multifunction
Inkjet Printer series; mp250, mp280, mp495, mg5100, mg5200, mg6100,
and mg8100.
I guess current version of scangearmp is not suitable for your scanner. Probably you need ver. 1.80 which is dedicated for mg2100, mg3100, mg4100, mg5300, mg6200, mg8200, e500 series. I'm going to prepare scangearmp 1.80 package tomorrow evening (CEST).