This issue is caused by MountFlags=slave in the systemd-udevd.service file. Historically 16.04 removed this flag to allow laptop-mode-tools to work:
https://askubuntu.com/questions/1019865/why-does-ubuntu-16-04-remove- mountflags-slave-from-systemd-udevd-service In 18.04 this flag is preserved and as such when usbmount mounts filesystems they are mounted into systemd's private namespace and not visible to the user. A workaround is to override the MountFlag as described in: https://unix.stackexchange.com/a/441588/191141 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768010 Title: usbmount does not work on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/usbmount/+bug/1768010/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
