我执行了 lsusb 并发现了这些：
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 04f2:b5f7 Chicony Electronics Co., Ltd
Bus 001 Device 004: ID 04ca:3016 Lite-On Technology Corp.
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 0781:5571 SanDisk Corp. Cruzer Fit
Bus 001 Device 006: ID 04f3:0c03 Elan Microelectronics Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
我认为指纹传感器04f2:b5f7就是这个。但它无法被识别。有什么办法可以……启用它？谢谢！:)