问题：Ubuntu下无法检测到WiFi
- 电脑：Lenovo
- Subsystem: Lenovo RTL8723BE PCIe Wireless Network Adapter [17aa:b736]
- Ubuntu 16.04LTS内核版本：4.13.0-26-generic
解决经历
-
首先检测是否有阻塞
命令：rfkill list all
结果：无阻塞
0: tpacpi_bluetooth_sw: Bluetooth Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no 4: phy0: Wireless LAN Soft blocked: no Hard blocked: no如果存在Soft blocked 阻塞 可使用 rfkill unblock all 解锁，如果存在 Hard blocked阻塞自行Google。
-
查看网卡及内核相关信息
命令：lspci -vvnn |grep -A 9 Network
结果：
04:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723] Subsystem: Lenovo RTL8723BE PCIe Wireless Network Adapter [17aa:b736] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 49 Region 0: I/O ports at 1000 [size=256] Region 2: Memory at f0800000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: rtl8723be Kernel modules: rtl8723be重点：最后两行
-
解决
sudo apt-get install linux-headers-generic build-essential git //没有有线网就算了 git clone https://github.com/lwfinger/rtlwifi_new.git cd rtlwifi_new sudo make install sudo modprobe -r rtl8723be //<<YOUR WIRELESS DRIVER CODE>> sudo modprobe rtl8723be //<<YOUR WIRELESS DRIVER CODE>>
