I had a similar problem with the default version of gscan2pdf available from the default Ubuntu 16.04 repositories. I would scan, but the error message would arrive after the scan was completed. gscan2pdf version 1.3.8.
I then installed the following PPA to get the latest version, 1.8.3: sudo add-apt-repository --yes ppa:jeffreyratcliffe/ppa The problem was gone. I suggest you upgrade gscan2pdf to the latest and report your findings. We might be able to close this ticket. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/844582 Title: "Invalid argument" when trying to scan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gscan2pdf/+bug/844582/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
