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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:

*-network
       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=192.168.1.102 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?

Community
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Adam
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2 Answers2

2

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.

Daniel プリン
  • 31
1

I was able to get the wlan 100% working - no disconnects anymore on Ubuntu 16.04 with the wireless card RTL8723BE (However, only tested on HP 350 G2 for 1 month).

Here are the steps:

Step 1 Remove the rtl8723be.conf file, if you have created it by reading all the other posts here on the site about this card.

sudo rm /etc/modprobe.d/rtl8723be.conf

Step 2 Update the driver

sudo add-apt-repository ppa:hanipouspilot/rtlwifi
sudo apt-get update
sudo apt-get install rtlwifi-new-dkms

Step 3 Disable Legacy Support in Bios like this:

Bios -> Boot Option (Enter) -> Legacy Support: Disabled

enter image description here

Thats it. Now it should work!

How I found that out

I was first doing Step 1 and Step 2 (they have been suggested already in https://askubuntu.com/a/635629/247771), but I still had a disconnect all 20min - 2hours. In the answer Pilot6 suggested to add again the rtl8723be.conf file, but when doing it, the wlan was complete broken. I tried some of the configurations of that file, but none really helped. So in the end, I simply removed rtl8723be.conf again. I then scrolled down and found the solution (Step 3) by reading this answer which said one should remove Windows 10 fastboot. I don't have windows 10, so I could not remove fastboot. But I was looking if I could disable something else in the Boot Options. This is how I found it out. Can't belive that this works. This problem was bugging me for month.

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Adam
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