I reinstallled my Ubuntu just now and i typed to CMD rfkill list but it showed this:
0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no
And after lspci-knn | grep Net -A2 it showed this:
01:00.0 Network controller : Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01) Subsystem: Lenovo Device [17aa:0611] Kernel driver in use: bcma-pci-bridge
So what i am supposed to do if my wifi doesnt work (my pc cant find any) and i dont have connection to internet only on my mobil phone.