I am running a Dell Latitude E5500 and I am experiencing connectivity
problems with Trisquel (7.0 full GNOME version), too.
My wireless card is an Intel, not the usual Broadcom card that usually comes
with Dell laptops and creates so many connectivity problems for Linux users.
I am not saying the problem is not the Intel card, it very well could be; I
am simply noting the usual Broadcom problem is definitely not the problem.
Using the ethernet/cable connection is a breeze. It's automatic.
But when I boot up and try to connect via wireless, no wireless connections
appear (there are four of them to choose from here, two with passwords, two
without--but none appear). All other computers and wireless devices connect
without issue--so, suffice to say, the problem is not the wireless service.
My other laptops running other distros are connecting just fine, too.
I've tried everything. I am befuddled. I don't get it.
Anyone?