I've used my Nexus to test CM and other ROMs before; but now with 6.0.1, I simply can't get it to work with USB neither under Windows or Linux.
On Lubuntu it says:
[ 36.853678] usb 3-1: new full-speed USB device number 6 using xhci_hcd [ 36.965697] usb 3-1: device descriptor read/64, error -71 [ 37.181684] usb 3-1: device descriptor read/64, error -71 [ 37.941764] usb 3-1: Device not responding to setup address.
On Windows 10, it is Unknown USB Device (Device Descriptor Request Failed).
I've tried 3 cables and 3 other devices (Windows Phone, Android), everything else is working. I've opened up and cleaned the USB port, nothing happened. The device charges successfully.
I have installed all Google Drivers and whatnot, adb and fastboot doesn't see the device - not in normal mode, not in recovery mode.
If I connect the device, it will not show the USB connection options on Android.