ubuntu should have everything you need already there. some lenovos (i don't know about your particular model) have issues with the uefi which is like a bios but hates linux. in this case you have to change out the grub 2 bootloader in ubuntu for grub legacy. if you run into this problem try linux mint its very similar to ubuntu minus the unity overlay, but it still runs regular grub. another problem my b570 and some v570's have is with the wireless. if you run into this issue open a terminal and type the following commands
sudo service network-manager stop
sudo rmmod acer_wmi
sudo modprobe acer_wmi
sudo rfkill unblock all
sudo service network-manager start
sudo rmmod -f acer_wmi
then to get the settings to stick after reboot type
sudo su
echo "blacklist acer_wmi" >> /etc/modprobe.d/blacklist.conf
exit
and you will have working wifi
