On this mac80211/mt7921u stack, Android's WifiCountryCode path issues the private DRIVER COUNTRY command (a Broadcom-era AIDL path), which is a silent no-op. The kernel never receives NL80211_CMD_REQ_SET_REG, so scanning runs in world regdom (00) with 5GHz passive-only. Ship country=US in wpa_supplicant_overlay.conf, loaded by the supplicant AIDL service (addStaInterfaceInternal -> confanother) at every interface init. This goes through wpa_drv_set_country() -> nl80211's set_country, issuing a genuine user regulatory hint to the kernel.
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6 lines
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103 B
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country=US
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disable_scan_offload=1
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wowlan_triggers=any
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p2p_disabled=1
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filter_rssi=-75
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no_ctrl_interface= |