Pi 3B: Hotspot Fails to Start

[Dave Taylor]

AP mode doesn't want to start.  Why?

In the log, this is the first hint of trouble ahead:

"Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures"

RaspberryPi 3, Model B, v1.2 (2015)

DigiPi image: 2.0-1

syslog excerpt:

NetworkManager[556]: <warn>  [1760558606.2539] device (wlan0): Activation: (wifi) association took too long
NetworkManager[556]: <info>  [1760558606.2548] device (wlan0): state change: config -> failed (reason 'no-secrets', managed-type: 'full')
NetworkManager[556]: <info>  [1760558606.2564] manager: NetworkManager state is now DISCONNECTED
NetworkManager[556]: <warn>  [1760558606.2580] device (wlan0): Activation: failed for connection 'wlan0'
NetworkManager[556]: <info>  [1760558606.2592] device (wlan0): state change: failed -> disconnected (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558606.9849] policy: auto-activating connection 'hotspot' (dffb95a6-dedd-40d8-891e-098837c74d1b)
NetworkManager[556]: <info>  [1760558606.9886] device (wlan0): Activation: starting connection 'hotspot' (dffb95a6-dedd-40d8-891e-098837c74d1b)
NetworkManager[556]: <info>  [1760558606.9894] device (wlan0): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558606.9915] manager: NetworkManager state is now CONNECTING
NetworkManager[556]: <info>  [1760558607.0208] device (wlan0): state change: prepare -> config (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558607.0229] device (wlan0): Activation: (wifi) access point 'hotspot' has security, but secrets are required.
NetworkManager[556]: <info>  [1760558607.0231] device (wlan0): state change: config -> need-auth (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558607.0308] device (wlan0): state change: need-auth -> prepare (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558607.0363] device (wlan0): state change: prepare -> config (reason 'none', managed-type: 'full')
NetworkManager[556]: <info>  [1760558607.0385] device (wlan0): Activation: (wifi) connection 'hotspot' has security, and secrets exist.  No new secrets needed.
NetworkManager[556]: <info>  [1760558607.0395] Config: added 'ssid' value 'DigiPi'
NetworkManager[556]: <info>  [1760558607.0397] Config: added 'mode' value '2'
NetworkManager[556]: <info>  [1760558607.0398] Config: added 'frequency' value '2462'
NetworkManager[556]: <info>  [1760558607.0399] Config: added 'ht40' value '0'
NetworkManager[556]: <info>  [1760558607.0401] Config: added 'freq_list' value '2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484'
NetworkManager[556]: <info>  [1760558607.0402] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256'
wpa_supplicant[557]: Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures
NetworkManager[556]: <info>  [1760558607.0403] Config: added 'psk' value '<hidden>'
NetworkManager[556]: <info>  [1760558607.0404] Config: added 'proto' value 'RSN'
NetworkManager[556]: <info>  [1760558607.0405] Config: added 'pairwise' value 'CCMP'
NetworkManager[556]: <info>  [1760558607.0406] Config: added 'group' value 'CCMP'
wpa_supplicant[557]: nl80211: kernel reports: key setting validation failed
wpa_supplicant[557]: wlan0: Could not connect to kernel driver
wpa_supplicant[557]: Interface initialization failed
wpa_supplicant[557]: wlan0: interface state UNINITIALIZED->DISABLED
wpa_supplicant[557]: wlan0: AP-DISABLED
wpa_supplicant[557]: wlan0: Unable to setup interface.
wpa_supplicant[557]: Failed to initialize AP interface
wpa_supplicant[557]: wlan0: interface state DISABLED->DISABLED
wpa_supplicant[557]: wlan0: AP-DISABLED
wpa_supplicant[557]: hostapd_free_hapd_data: Interface wlan0 wasn't started
kernel: ieee80211 phy0: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
kernel: ieee80211 phy0: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
wpa_supplicant[557]: wlan0: CTRL-EVENT-DISCONNECTED bssid=b8:27:eb:b2:11:08 reason=3 locally_generated=1
wpa_supplicant[557]: nl80211: kernel reports: key setting validation failed
wpa_supplicant[557]: wlan0: Could not connect to kernel driver
wpa_supplicant[557]: Interface initialization failed
wpa_supplicant[557]: wlan0: interface state UNINITIALIZED->DISABLED
wpa_supplicant[557]: wlan0: AP-DISABLED
wpa_supplicant[557]: wlan0: Unable to setup interface.
wpa_supplicant[557]: Failed to initialize AP interface
wpa_supplicant[557]: wlan0: interface state DISABLED->DISABLED
wpa_supplicant[557]: wlan0: AP-DISABLED
wpa_supplicant[557]: hostapd_free_hapd_data: Interface wlan0 wasn't started
kernel: ieee80211 phy0: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
kernel: ieee80211 phy0: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
wpa_supplicant[557]: wlan0: CTRL-EVENT-DISCONNECTED bssid=b8:27:eb:b2:11:08 reason=3 locally_generated=1
wpa_supplicant[557]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
wpa_supplicant[557]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
initial boot service.
online.sh[876]: /home/pi/online.sh: line 22: [: ==: unary operator expected
systemd[1]: digipi-boot.service: Deactivated successfully.
systemd[1]: digipi-boot.service: Consumed 3.815s CPU time.
NetworkManager[556]: <warn>  [1760558632.2549] device (wlan0): Activation: (wifi) Hotspot network creation took too long, failing activation
NetworkManager[556]: <info>  [1760558632.2551] device (wlan0): state change: config -> failed (reason 'supplicant-timeout', managed-type: 'full')
NetworkManager[556]: <info>  [1760558632.2574] manager: NetworkManager state is now DISCONNECTED
NetworkManager[556]: <warn>  [1760558632.2590] device (wlan0): Activation: failed for connection 'hotspot'

[Craig]

Hi Dave, this is normal on the 2B, 3B and Zero. (all unsupported, single core Pi's, over 12 years old)

The 3B+ and Zero2W are ideal.

You can prop it up by removing two lines from /etc/NetworkManager/system-connections/hotspot.nmconnection

group=ccmp
pairwise=ccmp

But, you'll find the 3B to be prohibitively slow in any event (in my opinion).  

if it helps,
-craig
KM6LYW

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