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我的笔记本电脑有 USB 3.0，但 Ubuntu 14.04 无法识别它？

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我的笔记本电脑有 USB 3.0，但 Ubuntu 14.04 无法识别它？

我的戴尔 Inspiron 5421 笔记本电脑有两个 USB 3.0 端口。端口标记为“SS超高速”。但是当我运行命令时，lspci -t这是输出

/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
    |__ Port 3: Dev 3, If 0, Class=Vendor Specific Class, Driver=rtsx_usb, 480M
    |__ Port 4: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
    |__ Port 4: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
    |__ Port 6: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 6: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M

输出lsusb如下

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 0c45:649a Microdia 
Bus 001 Device 004: ID 8087:07da Intel Corp. 
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

如图所示，没有任何命令显示超高速 USB 端口的存在。我以前从未真正检查过它，但目前我正在考虑购买便携式 256Gb SSD，这就是为什么我要检查端口是否会成为驱动器的瓶颈。

以下是输出lsmod | grep hcd; lspci -nnk | grep "USB controller" -A2 

00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04)
Subsystem: Dell Device [1028:0591]
Kernel driver in use: ehci-pci


00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04)
Subsystem: Dell Device [1028:0591]
Kernel driver in use: ehci-pci

答案1

确保 USB 3 端口出现在 BIOS 中并且未被禁用。

拉米·罗森

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