Maybe this additional information can help to understand the problem?
1) I disconnected the USB Wifi
2) I ran:
$ sudo tail -n 0 -f /var/log/syslog
3) This was the output:
Aug 24 20:01:41 nsu-gnu kernel: [ 5540.141332] usb 3-2: new high-speed USB
device number 6 using xhci_hcd
Aug 24 20:01:42 nsu-gnu kernel: [ 5540.451172] usb 3-2: ath9k_htc:
Transferred FW: htc_9271.fw, size: 51000
Aug 24 20:01:42 nsu-gnu kernel: [ 5540.451379] xhci_hcd 0000:00:14.0: ERROR
no room on ep ring
Aug 24 20:01:42 nsu-gnu kernel: [ 5540.454249] usb 3-2: ath9k_htc: Unable to
allocate URBs
Aug 24 20:01:42 nsu-gnu kernel: [ 5540.454284] ath9k_htc: probe of 3-2:1.0
failed with error -22
Aug 24 20:01:52 nsu-gnu dhclient: DHCPREQUEST of 192.168.1.71 on eth0 to
192.168.1.100 port 67
Aug 24 20:01:52 nsu-gnu dhclient: DHCPACK of 192.168.1.71 from 192.168.1.100
Aug 24 20:01:52 nsu-gnu dhclient: bound to 192.168.1.71 -- renewal in 51
seconds
