wpa_supplicant unable to authenticate on second virtual interface

[Kpykcb]

0/~> lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

0/~> apt-cache policy wpasupplicant
wpasupplicant:
  Installed: 2.1-0ubuntu1
  Candidate: 2.1-0ubuntu1
  Version table:
 *** 2.1-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

0/~> lspci
02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)

0/~> uname -a
Linux kpykc 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

0/~> lsmod | grep ath
ath3k 13318 0
bluetooth 391196 23 bnep,ath3k,btusb,rfcomm
ath9k 164164 0
ath9k_common 13551 1 ath9k
ath9k_hw 453856 2 ath9k_common,ath9k
ath 28698 3 ath9k_common,ath9k,ath9k_hw
mac80211 630653 1 ath9k
cfg80211 484040 3 ath,ath9k,mac80211

0/~> cat /etc/modprobe.d/ath9k.conf
options ath9k nohwcrypt=1

0/~> sudo service network-manager stop

0/~> sudo iw dev wlan0 interface add wlan1 type station

or

0/~> sudo iw dev wlan0 interface add wlan1 type managed

`systemd-udev` changes vif name to **rename4**.

0/~> sudo ip link set dev rename4 down
0/~> sudo ip link set dev rename4 address 02:aa:aa:aa:aa:aa
0/~> sudo ip link set dev rename4 up

For 1st VIF `wpa_seekurjr1.conf` content:

~~~
network={
    ssid="SeekurJr1"
    key_mgmt=NONE
}
~~~

Run wpa_supplicant:

sudo wpa_supplicant -Dnl80211 -iwlan0 -c wpa_seekurjr1.conf
sudo dhclient -r wlan0
sudo dhclient wlan0

For second VIF `wpa_seekurjr2.conf` content:

~~~
network={
    ssid="SeekurJr2"
    key_mgmt=NONE
}
~~~

Run wpa_supplicant:

sudo wpa_supplicant -Dnl80211 -irename4 -c wpa_seekurjr2.conf
sudo dhclient -r rename4
sudo dhclient rename4

Independently which interface I'm starting first, second one fails:

nl80211: MLME command failed (auth): ret=-16 (Device or resource busy)

~~~
rename4: SME: Trying to authenticate with 00:80:48:71:19:18 (SSID='SeekurJr2' freq=2422 MHz)
rename4: State: SCANNING -> AUTHENTICATING
EAPOL: External notification - EAP success=0
EAPOL: External notification - EAP fail=0
EAPOL: External notification - portControl=ForceAuthorized
nl80211: Authenticate (ifindex=4)
  * bssid=00:80:48:71:19:18
  * freq=2422
  * SSID - hexdump_ascii(len=9):
     53 65 65 6b 75 72 4a 72 32 SeekurJr2
  * IEs - hexdump(len=0): [NULL]
  * Auth Type 0
rename4: nl80211: MLME command failed (auth): ret=-16 (Device or resource busy)
rename4: SME: Authentication request to the driver failed
rename4: Radio work 'sme-connect'@0xd951b0 done in 0.000293 seconds
~~~

I expect that virtual interfaces on Atheros AR9485 are working and I will be able to connect to 2 wifi APs simultaneously, e.g.
http://www.candelatech.com/vsta.php

[Alvin (alvin)]

did you ever reach a solution / workaround?

I'm seeing the same issue with ath9k_htc

possibly a driver issue?