I found a fairly jenky work around. If while NetworkManager is off or
crashed I use the hardware key combo to turn off wifi it does so. Then
NetworkManager will start up. However it will attempt to enable wifi
itself. So the next move is while it's starting up right after
NetworkManager has turned the wifi chip back on you need to utilize the
key combo again to manually disable wifi.

Then if I wait for a bit I can turn on wifi via hardware chip and it
will crash in about a minute with the following in the logs:

```
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> WiFi hardware radio set 
enabled
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> WWAN hardware radio set 
disabled
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> WiFi now enabled by 
radio killswitch
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> (wlp2s0): supplicant 
interface state: starting -> ready
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> (wlp2s0): device state 
change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Dec 22 13:21:03 nebraska NetworkManager[24469]: <info> Device 'wlp2s0' has no 
connection; scheduling activate_check in 0 seconds.
Dec 22 13:21:19 nebraska NetworkManager[24469]: <info> WiFi now disabled by 
radio killswitch
Dec 22 13:21:19 nebraska NetworkManager[24469]: <info> (wlp2s0): device state 
change: disconnected -> unavailable (reason 'none') [30 20 0]
Dec 22 13:25:50 nebraska NetworkManager[24469]: <info> WiFi now enabled by 
radio killswitch
Dec 22 13:25:50 nebraska NetworkManager[24469]: <info> (wlp2s0): supplicant 
interface state: starting -> ready
Dec 22 13:25:50 nebraska NetworkManager[24469]: <info> (wlp2s0): device state 
change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Dec 22 13:25:50 nebraska NetworkManager[24469]: <info> Device 'wlp2s0' has no 
connection; scheduling activate_check in 0 seconds.
Dec 22 13:25:52 nebraska NetworkManager[24469]: <info> (wlp2s0): supplicant 
interface state: ready -> inactive
Dec 22 13:26:18 nebraska NetworkManager[24469]: <info> (wlp2s0): supplicant 
interface state: inactive -> scanning
Dec 22 13:26:50 nebraska systemd[1]: NetworkManager.service: Main process 
exited, code=dumped, status=11/SEGV
Dec 22 13:26:50 nebraska systemd[1]: NetworkManager.service: Unit entered 
failed state.
Dec 22 13:26:50 nebraska systemd[1]: NetworkManager.service: Failed with result 
'core-dump'.
Dec 22 13:26:51 nebraska systemd[1]: NetworkManager.service: Service hold-off 
time over, scheduling restart.
Dec 22 13:26:51 nebraska systemd[1]: Stopped Network Manager.
Dec 22 13:26:51 nebraska systemd[1]: Starting Network Manager...
```

My first thought is that I might have a wireless chip that's
unsupported. However that doesn't seem to be the case given I'm running
a certified laptop. I'm still doing some investigation but now I seem to
be able to get NetworkManager to "stay up". Even if now I can't connect
to wifi.

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https://bugs.launchpad.net/bugs/1528639

Title:
  Network Manager Crashes Shortly after Starting

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