I have recently installed Ubuntu 18.10 on my laptop. I tried to install the LTS version first but the wi fi wouldn't work. Now after I updated my Linux it works but very slow(max 400 kb/s speed when on Windows 10 I have 3-4 mb/s).Sometimes the wi fi on Linux stops randomly and i got very bad signal even near my router. Any advice?
Laptop: Kiano Elegance 14.2 OS: Ubuntu 18.10 SSD 120 GB Dual Boot with windows 10 pro 4GB Ram It doesn't have ethernet only Wifi, ironically I used an usb wi fi adapter to connect firstly to wifi to update linux beacuse otherwise the wifi wouldn't work
sudo lshw -C Network
*-network description: Wireless interface physical id: 1 bus info: usb@1:7 logical name: wlxac35ee58886a serial: ac:35:ee:58:88:6a capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl8xxxu driverversion=4.18.0-15-generic firmware=N/A ip=192.168.43.191 link=yes multicast=yes wireless=IEEE 802.11
:~$ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 1122:3341 Bus 001 Device 003: ID 0bda:b720 Realtek Semiconductor Corp. Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub