Comment 5 for bug 1684213

Some additional notes after testing for a while...

The crashing behavior doesn't occur consistently in the same way. Sometimes the Bluetooth crashes with the Wifi, while sometimes it recovers fine and continues to work while the Wifi doesn't. In addition, it seems that the Wifi crash breaks NetworkManager as well- when I try to plug in a USB WiFi card, the networks show up but give me the following error in dmesg whenever the usb adapter tries to connect:

[21857.875157] wlx002129e30688: authenticate with 8e:15:44:a9:86:22
[21857.924545] wlx002129e30688: send auth to 8e:15:44:a9:86:22 (try 1/3)
[21857.926882] wlx002129e30688: authenticated
[21863.316129] wlx002129e30688: authenticate with 8e:15:44:a9:85:f8
[21863.371861] wlx002129e30688: send auth to 8e:15:44:a9:85:f8 (try 1/3)
[21863.374438] wlx002129e30688: authenticated
[21868.376165] wlx002129e30688: aborting authentication with 8e:15:44:a9:85:f8 by local choice (Reason: 3=DEAUTH_LEAVING)
[21868.740813] wlx002129e30688: authenticate with 8e:15:44:a9:82:fa
[21868.788615] wlx002129e30688: send auth to 8e:15:44:a9:82:fa (try 1/3)
[21868.790444] wlx002129e30688: authenticated
[21873.795552] wlx002129e30688: aborting authentication with 8e:15:44:a9:82:fa by local choice (Reason: 3=DEAUTH_LEAVING)

This repeats until it gives up trying to connect. Yet, tethering to my Android phone over USB DOES usually work. Restarting the NetworkManager service has no effect on the wifi issue.

@jsalisbury: This issue has persisted across kernel versions and Ubuntu versions. I had the same issue on 16.10, as well as Arch when I used it, upgrade or not. I'm not ruling out a regression however, but frankly I have no qualifications to say what the issue is caused by. If I have time (and I get desperate enough) I'll try 16.04 and 14.04 and let you know if it's still present there.

I'll test the 4.11 kernel this weekend, in the meantime, I'll upload some more dmesg outputs.