networking - WLAN RTL8723BE frequently disconnects - Ask Ubuntu

i using ubuntu 16.04 , wireless card rtl8723be.

i have tried 3 laptops now, lenovo b50-45, lenovo b50-50 , hp 350 g2. have wireless card rtl8723be integrated , had same issue - wlan disconnects , after disconnection cannot connect again. not find other router connect to. solution found make restart.

i aware of question how realtek rtl8723be wireless card work? , followed instruction of answer, installing new driver. however, on 3 laptops did not solve problem. tried suggested add

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

but did not help. worse, when adding line not connect router, had remove again.

i had windows 10 on hp laptop , on windows 10 there no connection errors. don't think router problem.

here information 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 try wireless card working?

linux not support card , never will. have same wifi card too,i tried , yet still doesn't work latest kernel. card more 2 years old. don't think support anytime soon. tried external wifi cards,none of them did work,the kernel keeps enabling rtl8723be. advice stay on windows or buy new laptop.