Hi,
On Fri, 2013-01-04 at 09:25 -0800, Stan Hu wrote:
> Let's say you took your device somewhere and connected to SSID Alice.
> connman saves a settings file in /var/lib/connman for this successful
> connection. Let's say you then moved your device and connected to
> SSID Bob. connman also saves another settings file for this
> connection.
>
> Now, when connman starts up, it asks wpa_supplicant to scan SSIDs
> Alice and Bob and the frequencies on which the device last connected.
The SSIDs are scanned only if the WiFi networks were hidden, in other
cases a normal broadcast scan is done.
> Since Alice doesn't exist, the nl80211 driver reports:
>
> nl80211: Scan trigger failed: ret=-22 (Invalid argument)
Which version of wpa_supplicant is in use?
> wpa_supplicant never returns a successful scan, so connman gets stuck
> waiting for the scan to complete. If you call 'iwlist wlan0
> scanning', this causes the nl80211 driver to do a full scan WITHOUT
> the SSIDs. wpa_supplicant returns back the results,connman resumes,
> and everything works.
Can you check ConnMan is stuck by running either 'test/test-connman scan
wifi' or 'connmanctl scan wifi'? Both commands wait until the scan is
done, which is a few seconds. What about a subsequent scan? If they
never return there is a bug somewhere.
Cheers,
Patrik
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