On Fri, 9 Aug 2013, Lionel Landwerlin wrote: > Hi there, > > I'm playing with 2 small usb webcams, showing up the stream of the > camera with it's plugged in and hiding it when it's unplugged. I'm > basically using 2 external camera + the integrated one. > > I've noticed the usb port just become unusable after a few plug/unplug. > The kernel won't show any device connected to it (phone, camera, > etc...). But it comes back after a reboot. > I tried to rmmod the xhci_hcd module to recover the ports, but it just > led to a backtrace. > > Attached is my dmesg. I'm running on 3.11-rc4 on a Lenovo X230. > Let me know if I can help to debug this issue.
The log shows that you were using both USB-2 (ehci-hcd) and USB-3 (xhci-hcd) ports. It would be best to concentrate on one at a time. Which do you want to do first? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
