My wifi drops when I plug in an external monitor through the thunderbolt port

Has anyone managed to solve this issue? Thanks

Anyone else solve this? I need my MBP to be connected to my Wacom and this is killing me.

The only solve I have found is to leave the MBP lid open and use the monitor as the main display. I changed the channel of the router with no luck.

Unfortunately even with the lid open I still have no WiFi.

I am using a MBP-Retina.

So frustrating.

Mines a official adapter 😟

I had the exact same problem. MacBook Air 13" mid 2012.

Solved it (at least it works now) by changing the wireless channel to 7 (instead of "Auto").

BTW: I don't have an original MiniDP adapter

I fixed this problem by switching the channel on my router from Auto to 1.

My setup:

2012 Macbook Pro 15" non-retina

Dell 2405fpw external monitor

Asus NT-R56U Router

Third-party DVI-Thunderbolt adapter

Changing my routers channel fixed the problem for me. Not sure why.

joshemory what channel did you change from / to?

Edit: Sorry just saw in your previous post you went from channel 11 to 1.

Yeah, ended up going from 11 to 1 and it immediately fixed the issue. Again, I'm not really sure why that worked, but I was just happy to be able to use my monitor and wireless at the same time.

did you try changing resolution ? I just changed the resolution to anything but default and wifi started working again.

Yes and with no luck.

I might as well return the keyboard and track pad. If I can not use a external monitor, no need to have them.

Changed the wifi channel to 1, and no problem what so ever, no matter the resolution of the screen. Don't know if it works with the lid closed.

So changing channels is a solution, now if we could only figure out why the heck that was happening haha. Then we'd be doing Apples job.