Using live usb I tried UBUNTU MATE 18.04.1 on my LENOVO ideapad 110-15IBR.
It seems that I do not have network connection (neither ethernet not wireless).
lspci | grep Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
Please post the output of this terminal commnad rfkill list and this one inxi -Nn
ubuntu-mate@ubuntu-mate:~$ rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
ubuntu-mate@ubuntu-mate:~$ inxi -Nn
Network: Card-1: Realtek RTL8821AE 802.11ac PCIe Wireless Network Adapter
driver: rtl8821ae
IF: wlp2s0 state: down mac: c8:3d:d4:70:96:c7
Card-2: Realtek RTL8101/2/6E PCIE Fast/Gigabit Ethernet controller
driver: r8169
IF: enp3s0 state: up speed: 100 Mbps duplex: full
mac: c8:5b:76:b0:9c:c3
ubuntu-mate@ubuntu-mate:~$
I believe there was a problem with the stock RTL8821AE driver and you'll need to install the one from git hub. Found here: https://github.com/lwfinger/rtlwifi_new
sudo apt-get install linux-headers-generic build-essential git
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
sudo make install
sudo modprobe rtl8821ae
give it a minute and see if it works. Good luck.
It works!
Thank you!
Glad it worked, enjoy 