问题# lsmod |grep xhc

dmesg# dmesg |grep xhc

[ 0.650446] xhci_hcd 0000:00:14.0: xHCI Host Controller

[ 0.650450] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1

[ 0.651518] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x00109810

[ 0.651523] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported

[ 0.651580] usb usb1: Manufacturer: Linux 4.2.0-25-generic xhci-hcd

[ 0.659081] xhci_hcd 0000:00:14.0: xHCI Host Controller

[ 0.659083] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2

[ 0.659105] usb usb2: Manufacturer: Linux 4.2.0-25-generic xhci-hcd

[ 0.969678] usb 1-5: new full-speed USB device number 2 using xhci_hcd

[ 1.269906] usb 1-6: new low-speed USB device number 3 using xhci_hcd

[ 1.722308] usb 1-11: new high-speed USB device number 4 using xhci_hcd

[ 3487.664191] usb 1-1: new high-speed USB device number 5 using xhci_hcd

[ 3555.543441] usb 1-1: reset high-speed USB device number 5 using xhci_hcd

它已经在内核中工作了吗？#locate xhci

/lib/modules/4.2.0-16-generic/kernel/drivers/usb/host/xhci-plat-hcd.ko

/lib/modules/4.2.0-22-generic/kernel/drivers/usb/host/xhci-plat-hcd.ko

/lib/modules/4.2.0-23-generic/kernel/drivers/usb/host/xhci-plat-hcd.ko

/lib/modules/4.2.0-25-generic/kernel/drivers/usb/host/xhci-plat-hcd.ko

/usr/src/linux-headers-4.2.0-16/...

...

答案1

你可以检查你的USB设备，例如lsusb -t，还应该列出使用的驱动程序以及设备连接的速度。

驱动程序内置在内核中，但是，你可以使用以下命令检查，当设置是y时，它是在内核中构建的。

grep -i xhci /boot/config-$(uname -r)

相关文章