Same issue in Brother MFC-J470DW: brightness and contrast settings have no effect. Xubuntu 16.04 LTS 4.4.0-128-generic #154-Ubuntu SMP i686 Simple Scan 3.20.0
Same issue in Brother MFC-J470DW: brightness and contrast settings have no effect.
Xubuntu 16.04 LTS 4.4.0-128-generic #154-Ubuntu SMP i686
Simple Scan 3.20.0