USB-BT4LE Ubuntu 14.04 Device descriptor read error

1

Hi there, I’ve been trying to solve this issue for a while now but I can’t seem to figure it out. When I plug the ble dongle into a linux machine, sometimes it doesn’t enumerate. It can’t read the device and then it shuts down.

dmesg:
[444.165133] usb 2-1.3: USB disconnect, device number 19
[723.158027] usb 2-1.2: new full-speed USB device number 20 using ehci-pci
[723.230043] usb 2-1.2: device descriptor read/64, error -32
[723.405902] usb 2-1.2: device descriptor read/64, error -32
[723.581885] usb 2-1.2: new full-speed USB device number 21 using ehci-pci
[723.653830] usb 2-1.2: device descriptor read/64, error -32
[723.829649] usb 2-1.2: device descriptor read/64, error -32
[724.005558] usb 2-1.2: new full-speed USB device number 22 using ehci-pci
[724.026856] usb 2-1.2: device descriptor read/8, error -32
[724.146963] usb 2-1.2: device descriptor read/8, error -32
[724.321613] usb 2-1.2: new full-speed USB device number 23 using ehci-pci
[724.342748] usb 2-1.2: device descriptor read/8, error -32
[724.462840] usb 2-1.2: device descriptor read/8, error -32
[724.565372] hub 2-1:1.0: unable to enumerate USB device on port 2

I’ve tried everything from changing the usb autosuspend to -1 which doesn’t work to installing every driver possible. I switched hcid off as well but it still won’t work. Thanks.

2

Hello Alex,

Thank your for contacting Plugable Support! I apologize for the issues you are encountering with our Bluetooth adapter under Ubuntu 14.04, but you’ve come to the right place. We are here to help!

I am having a hard time reproducing this issue, could you give me any more pointers on when you are noticing this behaviour?

Sincerely,
Ivan
Plugable Support

3

Hi Ivan, I figured out the issue. The device itself stopped properly functioning, ie a hardware failure. I already contacted support about this seperately. Thanks.