I have a Huawei usb dongle and after a power cycle reboot all appears good:-
dave@withycombe:~$ uname -a Linux withycombe 4.4.0-30-generic #49-Ubuntu SMP Thu Jun 30 20:51:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux dave@withycombe:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04 LTS Release: 16.04 Codename: xenial dave@withycombe:~$ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0a2a Intel Corp. Bus 001 Device 003: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 005: ID 12d1:155e Huawei Technologies Co., Ltd. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub dave@withycombe:~$ ls -l /dev/ttyU* crw-rw---- 1 root dialout 188, 0 Jul 12 09:07 /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 1 Jul 12 09:07 /dev/ttyUSB1 crw-rw---- 1 root dialout 188, 2 Jul 12 09:08 /dev/ttyUSB2 dave@withycombe:~$ However if I issue the command 'sudo reboot' then look at the system I don't get the /dev/ttyU* devices created. To be honest this bug is also complicated by fact that my Intel NUC computer does not always come back after a reboot. But that's a separate issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1435028 Title: Kernel does not detect already connected USB devices on boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435028/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs