我最近从 14.04.3 升级到 16.04，发现我的 USB 驱动器出现了一些奇怪的行为。在 14.04.3 中，我可以重新启动系统并通过 SSH 登录，然后我会看到我的 USB 驱动器已安装，但在 16.04 中，当我通过 SSH 登录时，我看不到它们。我必须通过 GUI 登录，然后我才能看到我的驱动器已安装（当我登录到 GUI 时可以通过 dmesg 看到这一点）
4.890411] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
[ 4.890455] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s31f6: link becomes ready
[ 555.005083] logitech-hidpp-device 0003:046D:4024.0004: HID++ 2.0 device connected.
[ 562.798702] EXT4-fs (sdc1): mounting ext3 file system using the ext4 subsystem
[ 562.798833] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
[ 563.382801] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 563.412568] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
[ 563.526803] EXT4-fs (sde1): mounted filesystem with ordered data mode. Opts: (null)
[ 563.608786] EXT4-fs (sdb): mounted filesystem with ordered data mode. Opts: (null)