I don't use the scanner daily, so I'm not completely certain. But as far as I remember, the problems started in ubuntu 16.04 with a kernel 4.4.x. At that time, I tried to go back to a prior kernel version, but that failed for nvidia video driver reasons.
There is quite a number of problem reports at the sane mailing list ([email protected]) - on the avision backend, and as well on USB problems with other backends. Here is one recent example: http://lists.alioth.debian.org/pipermail/sane-devel/2017-January/034968.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1643544 Title: HP Scanjet 7400c Scanner locks USB2 port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1643544/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
