Same issue with HP Office Jet 8000 -A809 Duplex worked in 10.04, but not in 11.10 anymore (also doesn't with hplip 3.11.10)
Same issue with HP Office Jet 8000 -A809
Duplex worked in 10.04, but not in 11.10 anymore (also doesn't with hplip 3.11.10)