I can confirm this is also an issue for me. blue background on a HP 3055A using Ghostscript 9.26 on Ubuntu 18.04. I have regressed to 9.22 by running
sudo apt install ghostscript=9.22~dfsg+1-0ubuntu1 libgs9=9.22~dfsg+1-0ubuntu1 libgs9-common=9.22~dfsg+1-0ubuntu1 and the blue background issue has been resolved. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1817308 Title: GhostScript Update causes Blue Background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/1817308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs