I have a HP Laserjet M1522nf and working with Kubuntu 18.04.2 I have exactly the same problems. A few days before I used a Tuxedo Linux and scanning was perfect. The problems began after using the original Kubuntu distribution.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1424451 Title: Brightness setting unaffective when scanning with MFP M177fw To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1424451/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs