Xubuntu16.04系统中使用EDIMAX EW-7822UAC无线网卡开启5G自发AP

目录

• [1.关于 EDIMAX EW-7822UAC](#1.关于 EDIMAX EW-7822UAC)
• 2.驱动安装
• [使用 DKSM（支持动态内核模块）安装驱动](#使用 DKSM（支持动态内核模块）安装驱动)
• 3.查看无线网卡信息
• 3.通过create_ap配置5G自发AP

1.关于 EDIMAX EW-7822UAC

官网介绍
https://www.edimax.com/edimax/merchandise/merchandise_detail/data/edimax/global/wireless_adapters_ac1200_dual-band/ew-7822uac/

详细参数：https://www.amazon.cn/dp/B00F97PU18

• 品牌：EDiMAX
• 制造商：‎Edimax
• 型号 ‎FBA_EW-7822UAC
• 芯片：Realtek RTL8812AU
• 商品尺寸 ‎20.29 x 13.49 x 3.81 cm
• 制造商是否已停产 ‎不是
• 颜色 ‎黑色//白色
• 计算机无线类型：‎802.11bgn
• 操作系统：Windows 8; Mac OS X (10.8.4 or above supports USB 3.0)
• 是否包含电池：‎不是
• 商品重量：‎118 g

2.驱动安装

这里以 Xubuntu16.04系统（内核：4.14）为例

• 下载地址：https://download.csdn.net/download/qq_45445740/88614252
• 下载后拷贝到目标设备上进行解压，运行 install-driver.sh 脚本

sudo ./install-driver.sh

• 待install-driver.sh安装完后可选择N，修改如下文件，将 /etc/modprobe.d/8812au.conf前面的 #号 去掉，保存。
  
  
• 重启设备

使用 DKSM（支持动态内核模块）安装驱动

提供另一个驱动：https://download.csdn.net/download/qq_45445740/88627350

• 1. 安装依赖包

  sudo apt update
  sudo apt install build-essential dkms  

• 2. 准备驱动文件 7822UAC-7811UAC.zip

  • 解压驱动文件，并切换到解压后的目录

    unzip 7822UAC-7811UAC.zip
    cd 7811

  • 如果没有驱动文件，可以从https://github.com/aircrack-ng/rtl8812au.git下载（这里我没验证过）

    sudo apt install git
    git clone https://github.com/aircrack-ng/rtl8812au.git
    cd rtl8812au

• 3. 使用 DKSM（支持动态内核模块）安装驱动

  sudo chmod 755 *.sh
  sudo ./dkms-install.sh

• 4. 若需要卸载驱动

  sudo ./dkms-remove.sh

3.查看无线网卡信息

• 此时可查看到插入的无线网卡信息

ifconfig

• 这里以 wlx08beac134a56 为例，查看可选择的信道

iwlist wlx08beac134a56 channel

• 查看无线网卡的详细信息

iw list

root@aubo-1712986093:~# iw list
Wiphy phy1
	max # scan SSIDs: 9
	max scan IEs length: 2304 bytes
	Retry short limit: 7
	Retry long limit: 4
	Coverage class: 0 (up to 0m)
	Supported Ciphers:
		* WEP40 (00-0f-ac:1)
		* WEP104 (00-0f-ac:5)
		* TKIP (00-0f-ac:2)
		* CCMP (00-0f-ac:4)
		* CMAC (00-0f-ac:6)
	Available Antennas: TX 0 RX 0
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * monitor
		 * P2P-client
		 * P2P-GO
	Band 1:
		Capabilities: 0x1962
			HT20/HT40
			Static SM Power Save
			RX HT20 SGI
			RX HT40 SGI
			RX STBC 1-stream
			Max AMSDU length: 7935 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 16 usec (0x07)
		HT TX/RX MCS rate indexes supported: 0-15
		Bitrates (non-HT):
			* 1.0 Mbps
			* 2.0 Mbps
			* 5.5 Mbps
			* 11.0 Mbps
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 2412 MHz [1] (17.0 dBm)
			* 2417 MHz [2] (17.0 dBm)
			* 2422 MHz [3] (17.0 dBm)
			* 2427 MHz [4] (17.0 dBm)
			* 2432 MHz [5] (17.0 dBm)
			* 2437 MHz [6] (17.0 dBm)
			* 2442 MHz [7] (17.0 dBm)
			* 2447 MHz [8] (17.0 dBm)
			* 2452 MHz [9] (17.0 dBm)
			* 2457 MHz [10] (17.0 dBm)
			* 2462 MHz [11] (17.0 dBm)
			* 2467 MHz [12] (disabled)
			* 2472 MHz [13] (disabled)
			* 2484 MHz [14] (disabled)
	Band 2:
		Capabilities: 0x862
			HT20/HT40
			Static SM Power Save
			RX HT20 SGI
			RX HT40 SGI
			No RX STBC
			Max AMSDU length: 7935 bytes
			No DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 16 usec (0x07)
		HT TX/RX MCS rate indexes supported: 0-15
		VHT Capabilities (0x03c031a2):
			Max MPDU length: 11454
			Supported Channel Width: neither 160 nor 80+80
			short GI (80 MHz)
			TX STBC
			SU Beamformee
			+HTC-VHT
		VHT RX MCS set:
			1 streams: MCS 0-9
			2 streams: MCS 0-9
			3 streams: not supported
			4 streams: not supported
			5 streams: not supported
			6 streams: not supported
			7 streams: not supported
			8 streams: not supported
		VHT RX highest supported: 867 Mbps
		VHT TX MCS set:
			1 streams: MCS 0-9
			2 streams: MCS 0-9
			3 streams: not supported
			4 streams: not supported
			5 streams: not supported
			6 streams: not supported
			7 streams: not supported
			8 streams: not supported
		VHT TX highest supported: 867 Mbps
		Bitrates (non-HT):
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 5180 MHz [36] (16.0 dBm)
			* 5200 MHz [40] (16.0 dBm)
			* 5220 MHz [44] (16.0 dBm)
			* 5240 MHz [48] (16.0 dBm)
			* 5260 MHz [52] (disabled)
			* 5280 MHz [56] (disabled)
			* 5300 MHz [60] (disabled)
			* 5320 MHz [64] (disabled)
			* 5500 MHz [100] (disabled)
			* 5520 MHz [104] (disabled)
			* 5540 MHz [108] (disabled)
			* 5560 MHz [112] (disabled)
			* 5580 MHz [116] (disabled)
			* 5600 MHz [120] (disabled)
			* 5620 MHz [124] (disabled)
			* 5640 MHz [128] (disabled)
			* 5660 MHz [132] (disabled)
			* 5680 MHz [136] (disabled)
			* 5700 MHz [140] (disabled)
			* 5720 MHz [144] (disabled)
			* 5745 MHz [149] (16.0 dBm)
			* 5765 MHz [153] (16.0 dBm)
			* 5785 MHz [157] (16.0 dBm)
			* 5805 MHz [161] (16.0 dBm)
			* 5825 MHz [165] (16.0 dBm)
			* 5845 MHz [169] (disabled)
			* 5865 MHz [173] (disabled)
			* 5885 MHz [177] (disabled)
	Supported commands:
		 * new_interface
		 * set_interface
		 * new_key
		 * start_ap
		 * new_station
		 * set_bss
		 * join_ibss
		 * set_pmksa
		 * del_pmksa
		 * flush_pmksa
		 * remain_on_channel
		 * frame
		 * set_channel
		 * connect
		 * disconnect
	Supported TX frame types:
		 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
	Supported RX frame types:
		 * IBSS: 0xd0
		 * managed: 0x40 0xb0 0xd0
		 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * P2P-client: 0x40 0xd0
		 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
	WoWLAN support:
		 * wake up on anything (device continues operating normally)
	software interface modes (can always be added):
		 * monitor
	interface combinations are not supported
	Device supports SAE with AUTHENTICATE command
	Device supports scan flush.

3.通过create_ap配置5G自发AP

下载配置create_ap

• 这里以165信道为例

CHANNEL=165
GATEWAY=10.0.0.1
WPA_VERSION=2
ETC_HOSTS=0
DHCP_DNS=gateway
NO_DNS=0
NO_DNSMASQ=0
HIDDEN=0
MAC_FILTER=0
MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
ISOLATE_CLIENTS=0
SHARE_METHOD=nat
IEEE80211N=0
IEEE80211AC=0
HT_CAPAB=[HT40+]
VHT_CAPAB=
DRIVER=nl80211
NO_VIRT=0
COUNTRY=CN
FREQ_BAND=2.4
NEW_MACADDR=
DAEMONIZE=0
NO_HAVEGED=0
WIFI_IFACE=wlx08beac134a56
INTERNET_IFACE=enp1s0
SSID=USB-IS-Test
PASSPHRASE=12345678
USE_PSK=0

• Q：开启5G信道后，换到了别的信道，此时再切换回原来的信道，发现是

• 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)

• 此时会发现无法开启5G的信道
• A：需要先查看当前国家代码 ：iw reg get
  设置为中国：iw reg set CN
  此时 iw list 查看可以看到

• 5745 MHz [149] (30.0 dBm)
• 5765 MHz [153] (30.0 dBm)
• 5785 MHz [157] (30.0 dBm)
• 5805 MHz [161] (30.0 dBm)
• 5825 MHz [165] (30.0 dBm)

或者直接将 create_ap.conf 中的配置项改为 COUNTRY=CN

• 开启后可通过Cellular-Z软件查看是否真正开启了5G信道