我有 wifi 适配器 TEW-646UBH。它与 ubuntu 14.04 完美兼容，但升级到 16.04 后适配器有时会冻结，尤其是在主动下载之后
这是输出lsusb：
rnovikov@romanovi-desktop:~$ lsusb
Bus 002 Device 008: ID 20f4:646b TRENDnet
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 005: ID 0a5c:2190 Broadcom Corp.
Bus 007 Device 004: ID 0a5c:4503 Broadcom Corp. Mouse (Boot Interface Subclass)
Bus 007 Device 003: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass)
Bus 007 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 010 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub