我正在尝试将 Raspberry Pi 计算模块 3+ 设置为带有 WiFi 适配器的接入点。
我正在关注这个教程：https://elinux.org/RPI-无线-热点。
我可以使用加密狗 EP-N8508GS 设置接入点，但是当我尝试使用 TL-WN722N 时，出现以下错误：
pi@raspberrypi:~ $ sudo service hostapd start
Job for hostapd.service failed because the control process exited with error code.
See "systemctl status hostapd.service" and "journalctl -xe" for details.
这似乎是 nl80211 驱动程序的问题，但我不太明白为什么它适用于第一个加密狗，但不适用于另一个加密狗。我想尝试使用 tp-link dongle，因为第一个不支持 AP 模式，并且当设备尝试连接时内核会崩溃。
$ 服务 hostapd 状态
pi@raspberrypi:~ $ service hostapd status
● hostapd.service - Advanced IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP Authenticator
Loaded: loaded (/lib/systemd/system/hostapd.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Mon 2019-05-06 03:49:27 BST; 1
Process: 1103 ExecStart=/usr/sbin/hostapd -P /run/hostapd.pid -B $DAEMON_OPTS ${DAEMON_CONF
May 06 03:49:27 raspberrypi systemd[1]: hostapd.service: Control process exited, code=exited
May 06 03:49:27 raspberrypi systemd[1]: Failed to start Advanced IEEE 802.11 AP and IEEE 802.
May 06 03:49:27 raspberrypi systemd[1]: hostapd.service: Unit entered failed state.
May 06 03:49:27 raspberrypi systemd[1]: hostapd.service: Failed with result 'exit-code'.
$journalctl -xe
pi@raspberrypi:~ $ journalctl -xe
May 06 04:10:22 raspberrypi hostapd[619]: nl80211: Driver does not support authentication/ass
May 06 04:10:22 raspberrypi hostapd[619]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
May 06 04:10:22 raspberrypi hostapd[619]: nl80211 driver initialization failed.
May 06 04:10:22 raspberrypi hostapd[619]: wlan0: interface state UNINITIALIZED->DISABLED
May 06 04:10:22 raspberrypi hostapd[619]: wlan0: AP-DISABLED
May 06 04:10:22 raspberrypi hostapd[619]: hostapd_free_hapd_data: Interface wlan0 wasn't star
May 06 04:10:22 raspberrypi systemd[1]: hostapd.service: Control process exited, code=exited
May 06 04:10:22 raspberrypi systemd[1]: Failed to start Advanced IEEE 802.11 AP and IEEE 802.
-- Subject: Unit hostapd.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- Unit hostapd.service has failed.
--
-- The result is failed.
May 06 04:10:22 raspberrypi systemd[1]: hostapd.service: Unit entered failed state.
May 06 04:10:22 raspberrypi systemd[1]: hostapd.service: Failed with result 'exit-code'.
May 06 04:10:25 raspberrypi systemd[1]: hostapd.service: Service hold-off time over, scheduli
May 06 04:10:25 raspberrypi systemd[1]: Stopped Advanced IEEE 802.11 AP and IEEE 802.1X/WPA/W
-- Subject: Unit hostapd.service has finished shutting down
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- Unit hostapd.service has finished shutting down.
May 06 04:10:25 raspberrypi systemd[1]: Starting Advanced IEEE 802.11 AP and IEEE 802.1X/WPA/
-- Subject: Unit hostapd.service has begun start-up
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- Unit hostapd.service has begun starting up.
May 06 04:10:25 raspberrypi hostapd[621]: Configuration file: /etc/hostapd/hostapd.conf
May 06 04:10:25 raspberrypi hostapd[621]: nl80211: Driver does not support authentication/ass
May 06 04:10:25 raspberrypi hostapd[621]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
May 06 04:10:25 raspberrypi hostapd[621]: nl80211 driver initialization failed.
May 06 04:10:25 raspberrypi hostapd[621]: wlan0: interface state UNINITIALIZED->DISABLED
May 06 04:10:25 raspberrypi hostapd[621]: wlan0: AP-DISABLED
May 06 04:10:25 raspberrypi hostapd[621]: hostapd_free_hapd_data: Interface wlan0 wasn't star
May 06 04:10:25 raspberrypi systemd[1]: hostapd.service: Control process exited, code=exited
May 06 04:10:25 raspberrypi systemd[1]: Failed to start Advanced IEEE 802.11 AP and IEEE 802.
-- Subject: Unit hostapd.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- Unit hostapd.service has failed.
--
-- The result is failed.
May 06 04:10:25 raspberrypi systemd[1]: hostapd.service: Unit entered failed state.
May 06 04:10:25 raspberrypi systemd[1]: hostapd.service: Failed with result 'exit-code'.
和我的配置：
/lib/systemd/system/hostapd.service
pi@raspberrypi:~ $ cat /lib/systemd/system/hostapd.service
[Unit]
Description=Advanced IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP Authenticator
After=network.target
[Service]
Type=forking
PIDFile=/run/hostapd.pid
Restart=on-failure
RestartSec=2
EnvironmentFile=/etc/default/hostapd
ExecStart=/usr/sbin/hostapd -P /run/hostapd.pid -B $DAEMON_OPTS ${DAEMON_CONF}
/etc/default/hostapd
pi@raspberrypi:~ $ cat /etc/default/hostapd
# Defaults for hostapd initscript
#
# See /usr/share/doc/hostapd/README.Debian for information about alternative
# methods of managing hostapd.
#
# Uncomment and set DAEMON_CONF to the absolute path of a hostapd configuration
# file and hostapd will be started during system boot. An example configuration
# file can be found at /usr/share/doc/hostapd/examples/hostapd.conf.gz
#
DAEMON_CONF="/etc/hostapd/hostapd.conf"
# Additional daemon options to be appended to hostapd command:-
# -d show more debug messages (-dd for even more)
# -K include key data in debug messages
# -t include timestamps in some debug messages
#
# Note that -B (daemon mode) and -P (pidfile) options are automatically
# configured by the init.d script and must not be added to DAEMON_OPTS.
#
#DAEMON_OPTS=""
/etc/hostapd/hostapd.conf
pi@raspberrypi:~ $ cat /etc/hostapd/hostapd.conf
interface=wlan0
ssid=MyAP
hw_mode=g
channel=1
auth_algs=1
ieee80211n=1 # 802.11n support
wmm_enabled=1 # QoS support
ht_capab=[HT40+][SHORT-GI-20][DSSS_CCK-40]
答案1
看来您需要 tp-link USB dongle soft-AP 的驱动程序。我通过安装这个驱动程序解决了这个问题。你可以找到它：这里