I am trying to get ACS to work for me but so far have not had any luck. I have tried on both the following kernels: 2.6.32-431.20.3.el6.x86_64 3.16.1-1.el6.elrepo.x86_64 on a CentOS 6.5 installation using htc_9271.fw v1.3. I would prefer to get it working on the former. Where should I be looking to determine the source of the "Unknown event 49" errors? Any suggestions or troubleshooting advice would be greatly appreciated. Thanks. Info about problem follows: $ lsusb | grep Atheros Bus 002 Device 007: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n $ hostapd -v hostapd v2.2 $ cat /etc/hostapd/hostapd.conf interface=wlan0 bridge=br0 driver=nl80211 logger_syslog=-1 logger_syslog_level=2 logger_stdout=-1 logger_stdout_level=2 ctrl_interface=/var/run/hostapd ctrl_interface_group=0 ssid=test country_code=US hw_mode=g channel=0 $ sudo hostapd -d /etc/hostapd/hostapd.conf random: Trying to read entropy from /dev/random Configuration file: /etc/hostapd/hostapd.conf ctrl_interface_group=0 rfkill: initial event: idx=1 type=1 op=0 soft=0 hard=0 nl80211: Supported cipher 00-0f-ac:1 nl80211: Supported cipher 00-0f-ac:5 nl80211: Supported cipher 00-0f-ac:2 nl80211: Supported cipher 00-0f-ac:4 nl80211: Supported cipher 00-0f-ac:6 nl80211: Using driver-based off-channel TX nl80211: Use separate P2P group interface (driver advertised support) nl80211: interface wlan0 in phy phy1 nl80211: Set mode ifindex 6 iftype 3 (AP) nl80211: Failed to set interface 6 to mode 3: -16 (Device or resource busy) nl80211: Try mode change after setting interface down nl80211: Set mode ifindex 6 iftype 3 (AP) nl80211: Mode change succeeded while interface is down nl80211: Setup AP(wlan0) - device_ap_sme=0 use_monitor=0 nl80211: Subscribe to mgmt frames with AP handle 0x141f2a0 nl80211: Register frame type=0xb0 nl_handle=0x141f2a0 match= nl80211: Register frame type=0x0 nl_handle=0x141f2a0 match= nl80211: Register frame type=0x20 nl_handle=0x141f2a0 match= nl80211: Register frame type=0xa0 nl_handle=0x141f2a0 match= nl80211: Register frame type=0xc0 nl_handle=0x141f2a0 match= nl80211: Register frame type=0xd0 nl_handle=0x141f2a0 match= nl80211: Register frame type=0x40 nl_handle=0x141f2a0 match= nl80211: Add own interface ifindex 4 nl80211: if_indices[16]: 4 nl80211: Add own interface ifindex 6 nl80211: if_indices[16]: 4 6 nl80211: Adding interface wlan0 into bridge br0 phy: phy1 BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits) wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE Previous country code 98, new country code US Continue interface setup after channel list update ctrl_iface not configured! random: Got 20/20 bytes from /dev/random RTM_NEWLINK: ifi_index=6 ifname=wlan0 operstate=2 linkmode=0 ifi_flags=0x1002 () nl80211: Ignore interface down event since interface wlan0 is up RTM_NEWLINK: ifi_index=6 ifname=wlan0 operstate=2 linkmode=0 ifi_flags=0x1003 ([UP]) RTM_NEWLINK: ifi_index=6 ifname=wlan0 operstate=2 linkmode=0 master=4 ifi_flags=0x1003 ([UP]) RTM_NEWLINK: ifi_index=6 ifname=wlan0 operstate=2 linkmode=0 master=4 ifi_flags=0x1003 ([UP]) RTM_NEWLINK: ifi_index=6 ifname=wlan0 master=4 operstate=2 ifi_flags=0x1003 ([UP]) nl80211: Add ifindex 4 for bridge br0 nl80211: Add own interface ifindex 4 nl80211: ifindex 4 already in the list Channel list update timeout - try to continue anyway nl80211: Regulatory information - country=98 nl80211: 2402-2472 @ 40 MHz 20 mBm nl80211: 5170-5250 @ 80 MHz 17 mBm nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS) nl80211: 5735-5835 @ 80 MHz 30 mBm nl80211: 57240-59400 @ 2160 MHz 28 mBm nl80211: 59400-63720 @ 2160 MHz 40 mBm nl80211: Added 802.11b mode based on 802.11g information ACS: Automatic channel selection started, this may take a bit ACS: Scanning 1 / 5 wlan0: nl80211: scan request Scan requested (ret=0) - scan timeout 10 seconds wlan0: interface state COUNTRY_UPDATE->ACS wlan0: ACS-STARTED Interface initialization will be completed in a callback (ACS) nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0 wlan0: nl80211: Scan trigger wlan0: Event SCAN_STARTED (49) received Unknown event 49 nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlan0 wlan0: nl80211: New scan results available nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 wlan0: Event SCAN_RESULTS (3) received ACS: Using survey based algorithm (acs_num_scans=5) nl80211: Fetch survey data wlan0: Event SURVEY (48) received No survey data received ACS: Scanning 2 / 5 wlan0: nl80211: scan request Scan requested (ret=0) - scan timeout 30 seconds RTM_NEWLINK: ifi_index=6 ifname=wlan0 wext ifi_flags=0x1003 ([UP]) nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0 wlan0: nl80211: Scan trigger wlan0: Event SCAN_STARTED (49) received Unknown event 49 nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlan0 wlan0: nl80211: New scan results available nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 wlan0: Event SCAN_RESULTS (3) received ACS: Using survey based algorithm (acs_num_scans=5) nl80211: Fetch survey data wlan0: Event SURVEY (48) received No survey data received ACS: Scanning 3 / 5 wlan0: nl80211: scan request Scan requested (ret=0) - scan timeout 30 seconds RTM_NEWLINK: ifi_index=6 ifname=wlan0 wext ifi_flags=0x1003 ([UP]) nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0 wlan0: nl80211: Scan trigger wlan0: Event SCAN_STARTED (49) received Unknown event 49 RTM_NEWLINK: ifi_index=6 ifname=wlan0 wext ifi_flags=0x1003 ([UP]) nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlan0 wlan0: nl80211: New scan results available nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 wlan0: Event SCAN_RESULTS (3) received ACS: Using survey based algorithm (acs_num_scans=5) nl80211: Fetch survey data wlan0: Event SURVEY (48) received No survey data received ACS: Scanning 4 / 5 wlan0: nl80211: scan request Scan requested (ret=0) - scan timeout 30 seconds nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0 wlan0: nl80211: Scan trigger wlan0: Event SCAN_STARTED (49) received Unknown event 49 RTM_NEWLINK: ifi_index=6 ifname=wlan0 wext ifi_flags=0x1003 ([UP]) nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlan0 wlan0: nl80211: New scan results available nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 wlan0: Event SCAN_RESULTS (3) received ACS: Using survey based algorithm (acs_num_scans=5) nl80211: Fetch survey data wlan0: Event SURVEY (48) received No survey data received ACS: Scanning 5 / 5 wlan0: nl80211: scan request Scan requested (ret=0) - scan timeout 30 seconds nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for wlan0 wlan0: nl80211: Scan trigger wlan0: Event SCAN_STARTED (49) received Unknown event 49 RTM_NEWLINK: ifi_index=6 ifname=wlan0 wext ifi_flags=0x1003 ([UP]) nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for wlan0 wlan0: nl80211: New scan results available nl80211: Scan included frequencies: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 wlan0: Event SCAN_RESULTS (3) received ACS: Using survey based algorithm (acs_num_scans=5) nl80211: Fetch survey data wlan0: Event SURVEY (48) received No survey data received ACS: Trying survey-based ACS ACS: Unable to collect survey data ACS: All study options have failed Interface initialization failed wlan0: interface state ACS->DISABLED wlan0: AP-DISABLED ACS: Possibly channel configuration is invalid, please report this along with your config file. ACS: Failed to start wlan0: AP-DISABLED wlan0: Deauthenticate all stations nl80211: send_mlme - noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 nlmode=3 nl80211: send_mlme -> send_frame nl80211: send_frame - Use bss->freq=0 nl80211: send_frame -> send_frame_cmd nl80211: Frame command failed: ret=-22 (Invalid argument) (freq=0 wait=0) hostapd_free_hapd_data: Interface wlan0 wasn't started hostapd_deinit_driver: driver=0x47ef60 drv_priv=0x1421a10 -> hapd_deinit nl80211: Remove monitor interface: refcount=0 nl80211: Remove beacon (ifindex=6) netlink: Operstate: ifindex=6 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP) nl80211: Set mode ifindex 6 iftype 2 (STATION) nl80211: Failed to set interface 6 to mode 2: -16 (Device or resource busy) nl80211: Try mode change after setting interface down nl80211: Set mode ifindex 6 iftype 2 (STATION) nl80211: Mode change succeeded while interface is down nl80211: Teardown AP(wlan0) - device_ap_sme=0 use_monitor=0 nl80211: Unsubscribe mgmt frames handle 0x8888888889c97a29 (AP teardown) hostapd_deinit_driver:bss[0]->drv_priv=0x1421a10 hostapd_cleanup_iface_partial(0x141e7f0) Interface wlan0 disabled wlan0: interface state DISABLED->DISABLED hostapd_interface_deinit_free(0x141e7f0) hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1 hostapd_interface_deinit(0x141e7f0) hostapd_bss_deinit: deinit bss wlan0 hostapd_cleanup(hapd=0x1420cc0 (wlan0)) hostapd_free_hapd_data: Interface wlan0 wasn't started hostapd_interface_deinit_free: driver=0x47ef60 drv_priv=(nil) -> hapd_deinit hostapd_interface_free(0x141e7f0) hostapd_interface_free: free hapd 0x1420cc0 hostapd_cleanup_iface(0x141e7f0) hostapd_cleanup_iface_partial(0x141e7f0) hostapd_cleanup_iface: free iface=0x141e7f0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
