I attached a USB DAC based on the C-Media CM6632 USB chip to my Fedora 22 Linux box and the DAC doesn't even show up under lsusb It works fin on an older 3.12 kernel box. Kernel is version 4.1.1 This is the error from dmesg [ 1162.620652] usb usb1-port1: over-current condition [ 1162.826592] usb 1-1: new high-speed USB device number 6 using ci_hdrc [ 1163.042656] usb 1-1: new high-speed USB device number 7 using ci_hdrc [ 1163.258488] usb 1-1: new high-speed USB device number 8 using ci_hdrc [ 1163.668393] usb 1-1: device not accepting address 8, error -71 [ 1163.770416] usb 1-1: new high-speed USB device number 9 using ci_hdrc [ 1164.180285] usb 1-1: device not accepting address 9, error -71 [ 1164.180405] usb usb1-port1: unable to enumerate USB device Any idea what the problem is? -Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html