我有一个CubieTruck Plus (CubieBoard5)运行 Linaro。它有一个以太网端口和 wifi 卡。我想禁用不需要的服务并降低功耗，所以我想尽早停止与 wifi 和 wlan0 相关的所有内容。
主板/etc/network/interfaces未启用 wlan0 或 wifi。但是，当我dmesg在启动期间检查输出时，我看到卡已启用（见下文）。
我检查了内核启动参数，但没有看到任何与禁用 wifi 或 wlan0 相关的内容。有一个rfkill.default_state处理飞行模式的按钮，但此设备没有这样的按钮（可能无法按我的预期执行）。
如何禁用 WLAN 作为启动时选项或内核启动参数？
cubietruck:~$ dmesg | egrep -i '(wlan|wifi|802)'
[ 0.162278] cfg80211: Calling CRDA to update world regulatory domain
[ 5.128958] [rf_pm]: set ac10032k2 32k out[wifi_pm]: wifi gpio init is OK !!
[ 6.789026] [wifi_pm]: set wl_reg_on 1 !
[ 6.789260] =========== WLAN placed in POWER ON ========
[ 6.913059] bcm_wlan_get_oob_irq enter.
[ 6.940204] Broadcom Dongle Host Driver: register interface [wlan0] MAC: xx:xx:xx:xx:xx:xx
[ 6.940389] [wifi_pm]: set wl_reg_on 0 !
[ 6.940400] =========== WLAN placed in RESET ========
[ 11.609474] wl_android_wifi_on in 1
[ 11.609483] wl_android_wifi_on in 2: g_wifi_on=0
[ 11.609492] [wifi_pm]: set wl_reg_on 1 !
[ 11.609707] =========== WLAN going back to live ========
[ 11.715036] dhd_bus_devreset: == WLAN ON ==
[ 12.140869] wl_android_wifi_on: Success
[ 12.142367] wl_cfg80211_attach_post: p2p0 p2p_dev_addr=xx:xx:xx:xx:xx:xx
[ 16.407047] CFG80211-ERROR) wl_notify_scan_status : scan is not ready
[ 21.372467] CFG80211-ERROR) wl_notify_scan_status : scan is not ready
[ 23.150025] wlan0: no IPv6 routers present