WiFi network is not listed by NM but listed by the kernel driver

[Simon Fels]

I wanted to connect my local WiFi network today (device was off before and may have slept) but didn't found it in the UI. I then manually triggered a

$ sudo iwlist wlan0 scan

on the command line which directly found my WiFi network whereas NetworkManager still didn't listed it.

After power cycling WiFi the network was listed again on the UI.

This is on Ubuntu Touch and mako:

phablet@ubuntu-phablet:~$ system-image-cli -i
current build number: 227
device name: mako
channel: ubuntu-touch/rc-proposed/ubuntu
last update: 2015-08-28 09:13:42
version version: 227
version ubuntu: 20150828
version device: 20150819
version custom: 20150828

[Tony Espy (awe)]

@Simon

A few questions...

1. What kind of AP ( 2.4G? 5G? )? What type of security? Is the SSID visible?

2. The following two commands will show the APs known to NM and wpa_supplicant:

 - nmcli d wifi list

 - wpa_cli scan_results

Please check to see if the AP is available in either during this period.

You also can enable debug scan logging in NM via:

Just before the test:

$ sudo nmcli general logging level debug domains wifi,wifi_scan

<do test>

Either grab syslog right now, or turn down the logging:

$ sudo nmcli general logging level info domains DEFAULT

and then grab the syslog at your convenience.

[Tony Espy (awe)]

Also, you can watch the scans be triggered from NM by running 'wpa_cli' ( as root ), and watching for the associated CTRL_EVENTs.

[Simon Fels (morphis)]

AP is 2.4G, WPA-PSK secured and it's SSID is not hidden.

Will add more details once I get this reproduced.