Can you see if this bug still happens with the latest 16.04 kernel? The latest kernel is 4.4.0-58.79 and can be installed by applying the latest updates.
** Tags added: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653009 Title: Ubuntu 16.04 fails to boot from Sandisk usb stick with latest kernels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1653009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs