Hi,
I have an embedded system (ALIX) with an Atheros AR5414 chipset (802.11 a/b/g)
I realized I have a wireless pollution problem at 2.4 GHz, so I
thought to setup an 802.11a AP (5 GHz).
hostapd tells me I have only 2.4 GHz channels available. Why?
Is there a chance to use the 5 Ghz channels? As I realize it's a
regulatory issue, I live in France.
I attached output of
- /usr/sbin/hostapd -dd /etc/hostapd/hostapd.wlan0.conf
- iw list
- cat /etc/hostapd/hostapd.wlan0.conf
thank you,
alfonso
# /usr/sbin/hostapd -dd /etc/hostapd/hostapd.wlan0.conf
Configuration file: /etc/hostapd/hostapd.wlan0.conf
Line 9: DEPRECATED: 'debug' configuration variable is not used anymore
eapol_version=1
nl80211: Add own interface ifindex 3
nl80211: New interface mon.wlan0 created: ifindex=25
nl80211: Add own interface ifindex 25
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
nl80211: Added 802.11b mode based on 802.11g information
Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
Could not select hw_mode and channel. (-1)
wlan0: Unable to setup interface.
Flushing old station entries
Deauthenticate all stations
nl80211: Remove interface ifindex=25
netlink: Operstate: linkmode=0, operstate=6
# iw list
Failed to read classid file: Object not found
Wiphy phy0
Band 1:
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm) (passive scanning)
* 2472 MHz [13] (20.0 dBm) (passive scanning)
* 2484 MHz [14] (20.0 dBm) (passive scanning)
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps (short preamble supported)
* 5.5 Mbps (short preamble supported)
* 11.0 Mbps (short preamble supported)
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Band 2:
Frequencies:
* 5040 MHz [8] (disabled)
* 5060 MHz [12] (disabled)
* 5080 MHz [16] (disabled)
* 5180 MHz [36] (30.0 dBm) (passive scanning, no IBSS)
* 5200 MHz [40] (30.0 dBm) (passive scanning, no IBSS)
* 5220 MHz [44] (30.0 dBm) (passive scanning, no IBSS)
* 5240 MHz [48] (30.0 dBm) (passive scanning, no IBSS)
* 5260 MHz [52] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5280 MHz [56] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5300 MHz [60] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5320 MHz [64] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5500 MHz [100] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5520 MHz [104] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5540 MHz [108] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5560 MHz [112] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5580 MHz [116] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5600 MHz [120] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5620 MHz [124] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5640 MHz [128] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5660 MHz [132] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5680 MHz [136] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5700 MHz [140] (30.0 dBm) (passive scanning,
no IBSS, radar detection)
* 5745 MHz [149] (30.0 dBm) (passive scanning, no IBSS)
* 5765 MHz [153] (30.0 dBm) (passive scanning, no IBSS)
* 5785 MHz [157] (30.0 dBm) (passive scanning, no IBSS)
* 5805 MHz [161] (30.0 dBm) (passive scanning, no IBSS)
* 5825 MHz [165] (30.0 dBm) (passive scanning, no IBSS)
Bitrates (non-HT):
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
# cat /etc/hostapd/hostapd.wlan0.conf
interface=wlan0
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
debug=4
#dump_file=/tmp/hostapd.dump
#ctrl_interface=/var/run/hostapd
#ctrl_interface_group=0
#channel=6
#hw_mode=g
# let's try 5 GHz
channel=40
hw_mode=a
macaddr_acl=0
auth_algs=3
eapol_key_index_workaround=0
eap_server=0
# wpa=3
# only wpa 2
wpa=2
#ssid=voyage-mpd
ssid=<<my_SSID>>
#wpa_passphrase=voyage-mpd
wpa_passphrase=<<my_password>>
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
eapol_version=1
#wme_enabled=1
#ieee80211n=1
#ht_capab=[HT40-][HT40+][SHORT-GI-40][TX-STBC][RX-STBC1][DSSS_CCK-40]
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