Ubuntu – Intel Dual Band Wireless 7265 dropping connection

This is what support told me to do to fix it, it worked somewhat until a new kernel came out. It looks like every time a new kernel is installed in linux the 5ghz band becomes unstable and gets dropped after a couple seconds or minutes

Support Case: My wifi on my laptop keeps dropping the 5ghz network. Product Model: gazp9

When I see the World regulatory domain updated, I'm led to believe that you are lacking a recent firmware update that should help with some of the issues with the card. There are actually two parts to the update. One was a kernel, and the other was firmware in the OS and should be coming in with your regular updates.

if you're unsure about things, you can certainly open a terminal and perform the following commands

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

When done, fully reboot your system.

I also had to change my World regulatory domain to the US see below:

rt@simon:/tmp$ iw reg get
country 00:
    (2402 - 2472 @ 40), (3, 20)
    (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
    (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
    (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
    (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS


rt@simon:/tmp$ sudo iw reg set US
[sudo] password for rt: 
rt@simon:/tmp$ iw reg get
country US:
    (2402 - 2472 @ 40), (3, 27)
    (5170 - 5250 @ 40), (3, 17)
    (5250 - 5330 @ 40), (3, 20), DFS
    (5490 - 5600 @ 40), (3, 20), DFS
    (5650 - 5710 @ 40), (3, 20), DFS
    (5735 - 5835 @ 40), (3, 30)
    (57240 - 63720 @ 2160), (N/A, 40)
rt@simon:/tmp$ 

If this is an MBP 8,2 I can only offer this advice:

It won't ever be fully stable. I ran Ubuntu, and then Arch on my 8,2 up until it stopped working a few days ago and never figured out how to remedy this. Connections would always randomly 'drop'. (Disconnects but the icon indicates connected.)

Usually, a simple disconnect and reconnect fixed it. In the rare occasion, I'd have to reboot the router. This gave me stability for a few days at a time, depending on how many machines were on the network. The more congested it was, the more likely my connection would drop again and the more frequent the droppings. If you ever run into an issue where OS X will connect but Ubuntu won't, or your phone will connect but your laptop won't (etc.) a reboot on the router will also clear that up.

Also, different routers seem to 'drop' less frequently. Never has issues with Apple's Airport branded stuff. The rest, (DLink, Cisco, Netgear) have all been hit or miss.

SIDE NOTE: Heads up, if you're gonna try getting vgaswitcheroo working, be really careful. REALLY careful. You can't use a stock Ubuntu kernel. Don't even try. Kernel 3.16-2 booted once with the two cards on, then shut down and lost all use of the internal display. Mac OS X, Arch, Windows, Ubuntu. None can see that there's 15 inches of screen sitting right there. It now only works with an external monitor via OS X. Even reinstalling OSX/using the firmware recovery methods/disc won't fix it. I'm not the only person it's happened to. You've been warned.