STLink Gnuk is not getting detected

[Abhijith PA]

Hello,

I recently flashed a Stlink v2 clone with latest Gnuk version.
There are lot of tutorials available online and I could say
my flash went fine.

But after flashing, system is not recognizing gnuk usb device. May be
1 in 10 times, it get recognized, but most of the time its not.

```
[832888.723134] usb 1-1: new full-speed USB device number 70 using xhci_hcd
[832888.851179] usb 1-1: device descriptor read/64, error -71
[832889.087001] usb 1-1: device descriptor read/64, error -71
[832889.323145] usb 1-1: new full-speed USB device number 71 using xhci_hcd
[832889.451001] usb 1-1: device descriptor read/64, error -71
[832889.687192] usb 1-1: device descriptor read/64, error -71
```

I've tried different USB ports, different machines. Even flashed
another stlink and have the same result.


--abhijith