starting hostapd fails — ACS: Unable to collect survey data












4















I'm on a jessie on an embedded device, trying to set the WLAN into AP mode. When I try



# /usr/sbin/hostapd -P /run/hostapd.wlan0.pid /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ACS: Automatic channel selection started, this may take a bit
wlan0: interface state UNINITIALIZED->ACS
wlan0: ACS-STARTED
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
hostapd_free_hapd_data: Interface wlan0 wasn't started
wlan0: interface state DISABLED->DISABLED
hostapd_free_hapd_data: Interface wlan0 wasn't started


My config file is:



# cat /etc/hostapd/hostapd.conf 
interface=wlan0
driver=nl80211
channel=acs
hw_mode=g
wmm_enabled=0
max_num_sta=1
ssid=foobarfoo


The error message can be found in a web search, but the solutions don't fit for me: I don't use ǹetwork-managerand thenl80211driver works on a different device (handmade buildroot system) andhostapdversion isv2.3(not the buggyv2.1`)



Any idea how to narrow the problem further?



Edit: With channel=1 it runs, so it's definately an acs problem, but what can I try to find out the root of the problem?










share|improve this question

























  • Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

    – Tomasz Gandor
    Sep 3 '17 at 19:51
















4















I'm on a jessie on an embedded device, trying to set the WLAN into AP mode. When I try



# /usr/sbin/hostapd -P /run/hostapd.wlan0.pid /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ACS: Automatic channel selection started, this may take a bit
wlan0: interface state UNINITIALIZED->ACS
wlan0: ACS-STARTED
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
hostapd_free_hapd_data: Interface wlan0 wasn't started
wlan0: interface state DISABLED->DISABLED
hostapd_free_hapd_data: Interface wlan0 wasn't started


My config file is:



# cat /etc/hostapd/hostapd.conf 
interface=wlan0
driver=nl80211
channel=acs
hw_mode=g
wmm_enabled=0
max_num_sta=1
ssid=foobarfoo


The error message can be found in a web search, but the solutions don't fit for me: I don't use ǹetwork-managerand thenl80211driver works on a different device (handmade buildroot system) andhostapdversion isv2.3(not the buggyv2.1`)



Any idea how to narrow the problem further?



Edit: With channel=1 it runs, so it's definately an acs problem, but what can I try to find out the root of the problem?










share|improve this question

























  • Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

    – Tomasz Gandor
    Sep 3 '17 at 19:51














4












4








4


2






I'm on a jessie on an embedded device, trying to set the WLAN into AP mode. When I try



# /usr/sbin/hostapd -P /run/hostapd.wlan0.pid /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ACS: Automatic channel selection started, this may take a bit
wlan0: interface state UNINITIALIZED->ACS
wlan0: ACS-STARTED
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
hostapd_free_hapd_data: Interface wlan0 wasn't started
wlan0: interface state DISABLED->DISABLED
hostapd_free_hapd_data: Interface wlan0 wasn't started


My config file is:



# cat /etc/hostapd/hostapd.conf 
interface=wlan0
driver=nl80211
channel=acs
hw_mode=g
wmm_enabled=0
max_num_sta=1
ssid=foobarfoo


The error message can be found in a web search, but the solutions don't fit for me: I don't use ǹetwork-managerand thenl80211driver works on a different device (handmade buildroot system) andhostapdversion isv2.3(not the buggyv2.1`)



Any idea how to narrow the problem further?



Edit: With channel=1 it runs, so it's definately an acs problem, but what can I try to find out the root of the problem?










share|improve this question
















I'm on a jessie on an embedded device, trying to set the WLAN into AP mode. When I try



# /usr/sbin/hostapd -P /run/hostapd.wlan0.pid /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ACS: Automatic channel selection started, this may take a bit
wlan0: interface state UNINITIALIZED->ACS
wlan0: ACS-STARTED
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
hostapd_free_hapd_data: Interface wlan0 wasn't started
wlan0: interface state DISABLED->DISABLED
hostapd_free_hapd_data: Interface wlan0 wasn't started


My config file is:



# cat /etc/hostapd/hostapd.conf 
interface=wlan0
driver=nl80211
channel=acs
hw_mode=g
wmm_enabled=0
max_num_sta=1
ssid=foobarfoo


The error message can be found in a web search, but the solutions don't fit for me: I don't use ǹetwork-managerand thenl80211driver works on a different device (handmade buildroot system) andhostapdversion isv2.3(not the buggyv2.1`)



Any idea how to narrow the problem further?



Edit: With channel=1 it runs, so it's definately an acs problem, but what can I try to find out the root of the problem?







debian wlan hostapd access-point






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edited Mar 10 '17 at 9:12







Philippos

















asked Mar 9 '17 at 17:34









PhilipposPhilippos

6,02711547




6,02711547













  • Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

    – Tomasz Gandor
    Sep 3 '17 at 19:51



















  • Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

    – Tomasz Gandor
    Sep 3 '17 at 19:51

















Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

– Tomasz Gandor
Sep 3 '17 at 19:51





Well, I (also had to?) set channel to something specific before it started to work. But then, I'd had problems with the driver (rtl...), dhcpd.conf errors etc. I found some hints reading /var/log/syslog and running dmesg. Also, sometimes it's good to enjoy it when it finally works, and not ask why ;)

– Tomasz Gandor
Sep 3 '17 at 19:51










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Try "channel=0" in your config






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    Try "channel=0" in your config






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      Try "channel=0" in your config






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        Try "channel=0" in your config






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        Try "channel=0" in your config







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        answered Sep 7 '18 at 0:21









        Zach LakeZach Lake

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