Fwd: keeping up to date, kernel 4 -> 5, cannot ACS anymore

[Sven F.]

Hello,

I'm currently facing an issue starting hostapd  on wlan interfaces,
and trying to get to the bottom of it.

# iwinfo
wlan0     ESSID: unknown
          Access Point: 70:B3:D5:E7:E0:43
          Mode: Client  Channel: unknown (unknown)
          Center Channel 1: unknown 2: unknown
          Tx-Power: 0 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: unknown
          Type: nl80211  HW Mode(s): 802.11nac
          Hardware: 168C:0056 0000:0000 [Qualcomm Atheros QCA9886]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy0

# hostapd -d -B -i wlan0 /tmp/0_CUSTOM_0
[  489.915708] ath10k_pci 0000:01:00.0: Unknown eventid: 36933
[  489.942283] br-lan: port 5(wlan0) entered blocking state
[  489.942321] br-lan: port 5(wlan0) entered disabled state
[  489.947035] device wlan0 entered promiscuous mode
ACS: Automatic channel selection started, this may take a bit
ACS: No available channels found
wlan0: IEEE 802.11 Configured channel (0) or frequency (0) not found from\
the channel list of the current mode (2) IEEE 802.11a
wlan0: IEEE 802.11 Hardware does not support configured channel
Could not select hw_mode and channel. (-3)
wlan0: interface state UNINITIALIZED->DISABLED
wlan0: AP-DISABLED
wlan0: Unable to setup interface.
wlan0: interface state DISABLED->DISABLED
wlan0: AP-DISABLED
wlan0: CTRL-EVENT-TERMINATING
hostapd_free_hapd_data: Interface wlan0 wasn't started
[  490.001078] device wlan0 left promiscuous mode

[  490.069276] ath10k_pci 0000:01:00.0: peer-unmap-event: unknown peer id 1

the file is

interface=wlan0
driver=nl80211
logger_syslog=-1
logger_syslog_level=-1
logger_stdout=-1
logger_stdout_level=-1
hw_mode=a
channel=0
ieee80211n=1
ht_coex=0
ht_capab=[HT40+][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1]\
[MAX-AMSDU-7935][DSSS_CCK-40]
vht_oper_chwidth=1
vht_oper_centr_freq_seg0_idx=42
ieee80211ac=1
vht_capab=[RXLDPC][SHORT-GI-80][TX-STBC-2BY1][SU-BEAMFORMER]\
[SU-BEAMFORMEE][MU-BEAMFORMER][MU-BEAMFORMEE][RX-ANTENNA-PATTERN]\
[TX-ANTENNA-PATTERN][RX-STBC-1][MAX-MPDU-11454][MAX-A-MPDU-LEN-EXP7]
bridge=br-lan
ssid=0_CUSTOM_54_0
bssid=$M


but iw list is saying that :

* 5180 MHz [36] (disabled)
* 5200 MHz [40] (disabled)
* 5220 MHz [44] (disabled)
* 5240 MHz [48] (disabled)
* 5260 MHz [52] (disabled)
* 5280 MHz [56] (disabled)
* 5300 MHz [60] (disabled)
* 5320 MHz [64] (disabled)
* 5500 MHz [100] (20.0 dBm) (no IR, radar detection)
* 5520 MHz [104] (20.0 dBm) (no IR, radar detection)
* 5540 MHz [108] (20.0 dBm) (no IR, radar detection)
* 5560 MHz [112] (20.0 dBm) (no IR, radar detection)
* 5580 MHz [116] (20.0 dBm) (no IR, radar detection)
* 5600 MHz [120] (20.0 dBm) (no IR, radar detection)
* 5620 MHz [124] (20.0 dBm) (no IR, radar detection)
* 5640 MHz [128] (20.0 dBm) (no IR, radar detection)
* 5660 MHz [132] (20.0 dBm) (no IR, radar detection)
* 5680 MHz [136] (20.0 dBm) (no IR, radar detection)
* 5700 MHz [140] (20.0 dBm) (no IR, radar detection)
* 5720 MHz [144] (20.0 dBm) (no IR, radar detection)
* 5745 MHz [149] (20.0 dBm) (no IR)
* 5765 MHz [153] (20.0 dBm) (no IR)
* 5785 MHz [157] (20.0 dBm) (no IR)
* 5805 MHz [161] (20.0 dBm) (no IR)
* 5825 MHz [165] (20.0 dBm) (no IR)
* 5845 MHz [169] (disabled)
* 5865 MHz [173] (disabled)

I'm a bit lost on how to track down the issue further,
Is there some issue in the nl80211 driver ?


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