我最近升级到了Ubuntu 18.10 ( Cuttlefish),现在看来只有我的USB3.0端口能工作。我的主板的USB2.0端口在Windows下仍然工作得很好,dmesg显示这些端口仍然被检测到。这里有一个diff of dmesg,在USB拇指驱动器插入非工作端口之前和之后:
> [ 5272.705639] usb 3-1: new high-speed USB device number5278.409667] usb usb7-port1: unable to enumerate USB device
compute.internal)(PORT = 1521)) (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) )eLSNRCTL for Linux))) STATUS of the LISTENER Alias LISTENER Version TNSLSNR for Linux