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缺少 wlan0，而是显示 lo (14.04)

tag-icon • tag-icon 14.04 wireless networking drivers realtek
缺少 wlan0，而是显示 lo (14.04)

我尝试了在互联网上找到的所有解决方案，但都没有起作用。

我的笔记本电脑上有一块 Realtek RTL8723AE 无线网卡。它无法获得稳定的连接，所以我尝试了所有能找到的解决方案。我很确定其中一个禁用了 wlan0。

我查看了计算机的用户手册，上面写着“反复按 FN + F8 将打开或关闭无线网卡”。不起作用。

这是 iwconfig：

eth0      no wireless extensions.

lo        no wireless extensions.

lshw-c 网络

  *-network               
       description: Ethernet interface
       product: Killer E2200 Gigabit Ethernet Controller
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 13
       serial: 8c:89:a5:0e:a5:64
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=192.168.0.16 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:48 memory:f7900000-f793ffff ioport:d000(size=128)
  *-network UNCLAIMED
       description: Network controller
       product: RTL8723AE PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:05:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: cap_list
       configuration: latency=0
       resources: ioport:c000(size=256) memory:f7800000-f7803fff

有趣的是，

   dmesg | grep rtl

没有显示任何类似于“已加载固件”的内容。而是输出：

[   12.809572] rtl8723ae: Unknown symbol rtl8723_phy_set_sw_chnl_cmdarray (err 0)
[   12.809577] rtl8723ae: Unknown symbol rtl8723_phy_set_bb_reg (err 0)
[   12.809584] rtl8723ae: Unknown symbol rtl8723_phy_calculate_bit_shift (err 0)
[   12.809588] rtl8723ae: Unknown symbol rtl8723_phy_rf_serial_write (err 0)
[   12.809593] rtl8723ae: Unknown symbol rtl8723_phy_path_adda_on (err 0)
[   12.809602] rtl8723ae: Unknown symbol rtl8723_phy_save_mac_registers (err 0)
[   12.809608] rtl8723ae: Unknown symbol rtl8723_phy_txpwr_idx_to_dbm (err 0)
[   12.809615] rtl8723ae: Unknown symbol rtl8723_phy_init_bb_rf_reg_def (err 0)
[   12.809620] rtl8723ae: Unknown symbol rtl8723_save_adda_registers (err 0)
[   12.809623] rtl8723ae: Unknown symbol rtl8723_phy_pi_mode_switch (err 0)
[   12.809629] rtl8723ae: Unknown symbol rtl8723_dm_init_edca_turbo (err 0)
[   12.809633] rtl8723ae: Unknown symbol rtl8723_phy_path_a_fill_iqk_matrix (err 0)
[   12.809636] rtl8723ae: Unknown symbol rtl8723ae_firmware_selfreset (err 0)
[   12.809640] rtl8723ae: Unknown symbol rtl8723_phy_mac_setting_calibration (err 0)
[   12.809646] rtl8723ae: Unknown symbol rtl8723_phy_query_bb_reg (err 0)
[   12.809649] rtl8723ae: Unknown symbol rtl8723_phy_rf_serial_read (err 0)
[   12.809654] rtl8723ae: Unknown symbol rtl8723_dm_init_dynamic_bb_powersaving (err 0)
[   12.809659] rtl8723ae: Unknown symbol rtl8723_phy_reload_mac_registers (err 0)
[   12.809663] rtl8723ae: Unknown symbol rtl8723_dm_init_dynamic_txpower (err 0)
[   12.809673] rtl8723ae: Unknown symbol rtl8723_download_fw (err 0)
[   12.809680] rtl8723ae: Unknown symbol rtl8723_phy_reload_adda_registers (err 0)

另外，在系统设置中的网络设置中，我看到“有线”和“代理连接”，但我看不到无线。

我的无线功能在 Windows 8（双启动）下有效。

答案1

你可能缺少非免费的 Linux 固件包。要安装，请运行

sudo apt-get install linux-firmware-nonfree

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