I'm running Ubuntu 16.04 and my wireless card sometimes suddenly stops working after some use. When I restart the machine, goes back online.
In the network manager menu, it says 'disconnected' and below wifi-networks says: device not ready.
I can't make it back online, unless I restart.
My wireless device is Qualcomm Atheros QCA8171.
[EDIT] wireless-info.txt
journalctl /usr/sbin/NetworkManager
– waltinator May 06 '19 at 22:01