Issue Report: ACS Fails

[Daniel]

Hey all, 

The automatic channel selection feature fails for the following setup.
Any ideas / breadcrumbs to follow?



Log
   systemd[1]: Started Access point and  uthentication for..
   hostapd[2664]: Configuration file: /etc/hostapd/hostapd-wlx_01e.conf
   hostapd[2664]: ACS: Automatic channel selection started, this may take
   a bit
   hostapd[2664]: wlx0013eff6e01e: interface state UNINITIALIZED->ACS
   hostapd[2664]: wlx0013eff6e01e: ACS-STARTED
   hostapd[2664]: ACS: Unable to collect survey data
   hostapd[2664]: ACS: All study options have failed
   hostapd[2664]: Interface initialization failed
   hostapd[2664]: wlx0013eff6e01e: interface state ACS->DISABLED
   hostapd[2664]: wlx0013eff6e01e: AP-DISABLED
   hostapd[2664]: ACS: Possibly channel configuration is invalid, please
   report this along with your config file.
   hostapd[2664]: ACS: Failed to start
   hostapd[2664]: wlx0013eff6e01e: AP-DISABLED
   hostapd[2664]: hostapd_free_hapd_data: Interface wlx0013eff6e01e wasn't
   started
   hostapd[2664]: nl80211: deinit ifname=wlx0013eff6e01e
   disabled_11b_rates=0
   hostapd[2664]: wlx0013eff6e01e: interface state DISABLED->DISABLED
   hostapd[2664]: wlx0013eff6e01e: interface state DISABLED->DISABLED
   hostapd[2664]: wlx0013eff6e01e: AP-DISABLED
   hostapd[2664]: wlx0013eff6e01e: CTRL-EVENT-TERMINATING
   hostapd[2664]: hostapd_free_hapd_data: Interface wlx0013eff6e01e wasn't
   started
   systemd[1]: hostapd at wlx_01e.service: Succeeded.
   



Config File
   # Setup
   interface=wlx0013eff6e01e
   bridge=br0
   driver=nl80211
   
   # Logging
   logger_syslog=-1
   logger_syslog_level=0
   
   # AP
   ssid=Meh01
   hw_mode=g
   channel=0
   wmm_enabled=0
   macaddr_acl=0
   auth_algs=1
   wpa=2
   wpa_passphrase=****
   wpa_key_mgmt=WPA-PSK
   wpa_pairwise=TKIP
   rsn_pairwise=CCMP




Hardware
   USB Wifi dongle based on RTL8812BU chip
   * Driver: Compiled from https://github.com/morrownr/88x2bu-20210702
   * Amazon product link: https://a.co/d/g0PD0kN
   
   Raspberry PI 4 
   * Raspbian OS based on Linux 6.1.21-v8+