I'm an Ubuntu newbie, i have an Acer Aspire ES1-520 . Everything was working fine until some days ago when i've accepted to upgrade to 16.04 LTS (64x). Now i cannot use wifi. Is there a way to come back to 15.10 (64x) easily, or to turn off the secure boot (may be it can solve as i read in another thread). How to see the bios panel? I am not a coder/programmer (i come from the windows world) so be patient. Is there a patch or something easy to make my wifi card work again. Thanks in advance for any suggestion.
02:00.0 Network controller : Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01) Subsystem: Lite-on Communications Inc BCM43142 802.11b/g/n [11ad:6645] Kernel modules: bcma, wl