Ubuntu – WLAN RTL8723BE frequently disconnects


I am using Ubuntu 16.04 and the wireless card RTL8723BE.

I have tried three laptops now, the Lenovo B50-45, Lenovo B50-50 and HP 350 G2. They all have the wireless card RTL8723BE integrated and they all had the same issue – the wlan frequently disconnects and after disconnection I cannot connect again. Sometimes I do not even find any other router where I could connect to. The only solution that I found was to make a restart.

I am aware of the question How do I get a Realtek RTL8723BE wireless card to work? and I followed the instruction of the answer, installing a new driver. However, on all three laptops this did not solve the problem. I also tried as suggested to add

echo "options rtl8723be ant_sel=2" | sudo tee  /etc/modprobe.d/rtl8723be.conf

but this also did not help. Even worse, when adding this line I could not even connect normally to the router, so I had to remove it again.

I also had Windows 10 on the HP laptop and on Windows 10 there were no connection errors. So I don't think that the router is the problem.

Here is the information about my current installed wireless card:

       description: Wireless interface
       product: RTL8723BE PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 00
       serial: 68:14:01:30:e1:33
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8723be driverversion=4.4.0-45-generic firmware=N/A ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 ioport:5000(size=256) memory:d3100000-d3103fff

What else could I try to get this wireless card working?

Best Answer

Linux does not support this card properly and it never will. I have the same wifi card too,I tried EVERYTHING and yet still doesn't work even with the latest kernel. The card is more than 2 years old. I don't think they will support it properly anytime soon. I also tried with external wifi cards,none of them did work,the kernel keeps enabling the RTL8723BE. My advice is to stay on Windows or buy a new laptop.

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