10.10.4 Connections Worse than Before Update

PLEASE HELP

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

FIX NOT WORKING ANYMORE AFTER 10.10.4 UPGRADE

WIFI BACK TO 1 to 10 Mbps when I reached 200 before...

I tried the fix suggested but get an error message : No such file or directory.

It wasn't a fix, @shinbeth was complaining this command (which he presumabley used to reset discoveryd) no longer works. And the reason why it no longer works is because discoveryd was removed from 10.10.4 because it was unreliable (the update reverted to the previous DNS solution).

I am having the exact same problem. I had no issues with wifi with 10.10.3.. my computer just froze every hour.. but now with 10.10.4 my computer doesn't freeze but WIFI DROPS EVERY 5 MINUTES and I have to turn wifi on and off to fix...

How is anyone supposed to work??? I keep dropping from my gotomeeting sessions / VOIP conference calls... freaking $2000 laptop... unbelievable.

I have the same issue - no problems with discoveryd, and now (ironically) cannot maintain a wifi connection with mDNSresponder (though, honestly, I'm not sure if mDNSresponder, specifically, is the issue). Frustrating since everyone is still reporting "Wifi issues finally fixed in 10.10.4!" When for me, and apparently others, issues only just began.

There are times when the wifi connection will be reliable, and other times it will drop every minute. I use auto ping to monitor the connection status, and sometimes it cycles in and out every 15 seconds. Haven't been able to determine what activities make it worse, but when it goes out, the only apparent workaround is to turn off the wifi and back on.

Can't confirm.

Thanks for clarifying.

I think I'm experiencing the drop-out issue, but it is complicated by the fact that I just added another (used) AirPort Extreme in bridge mode to my network and it is the one dropping out. Is there any easy way to determine if it is a hardware or software issue? (Sorry, I don't mean to hijack this thread.)

Same here, had some Wifi issues before and they are still present, the only solution is to turn off/on Wifi.

Having the same issue, I originally thought it had something to do with installing X11 and Wireshark on my MacBook Pro. It drops CONSTANTLY now and the only way to get it back it to log off and log back on or reboot my MacBook Pro. I also noticed that when it drops off it can ONLY see the 2 SSID's that are in my house. All of the other wireless networks around my neighborhood that it sees when I first boot up disappear when the wireless starts to act up. It is almost like the wireless card power gets turned down to 10% or so.

I was also having issues trying to connect to my MBP via VNC over the wireless while at work. EVERY time I tried to connect to screen share and entered the VNC password that I had set on my MBP the wireless icon would flash and drop off of the network. I had to log out and log back in EVERY SINGLE TIME in order to get my MBP back onto the wireless network. What the **** is going on over there Apple???? I have a $100 tablet that is now more reliable than my $2200 MBP.........

Same problem. I try all fixes. Wifi continue to drop every 3-6 min. MB pro 15 (2014). Half year are pass, do something Apple. I just type this massage second time, because first time my Wifi drop...

Please try the following workaround (but hopefully 10.10.5 can solve the problem entirely). The command to rescan network ("airport -s") every 5 seconds is:

while true; do /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resourc es/airport -s; sleep 5; done

It works for me. If you would like take a try, just open Terminal and then copy-paste above command then press <enter> for execution. It will display a lot of rescan information but please just ignore them. You can minimize the Terminal window and see if the connection problem solved (actually the network still drops, but within 5 seconds it is recovered, so I hardly feel the drop). The number of 5 in the above command can be adjusted shorter or longer, based on your situation.

If it works, and you would like to make it run in background, then you can first use <control + c> to stop the above command. Then, create and save a script (e.g., named "keepalive.sh") with the command above as the content (you can use TextEdit, vi, or any other editor to create one), change mode of it for execution (e.g., "chmod +x keepalive.sh"), and then run it in background (e.g., "./keepalive.sh &"), and then you can press <enter> then use "exit" command to quit Terminal.

Hope this helps, thanks!

I'l try keeping this running and see if it proves to be a successful workaround for the dropping issues and will report back. One note - there is an errant space in the command above - it should be:

while true; do /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resourc es/airport -s; sleep 5; done

Edit - a weird comment rendering issue seems to be putting that space in, as it does it to me, too. Anyone trying to use this, just make sure you remove the space in the "/Resources/" part of the command.

The way Apple works 10.10.5 will probably bring other issues!

Thanks airhead3, I think the command is somewhat messed up when I try to copy and paste it :-P

After doing some crude testing last night I noticed a few things. When I had devices plugged into my USB ports drawing power/charging the power of my wifi card was turned down. I had my MBP plugged into power (85W MagSafe2 Power Supply) and when I plugged in my USB 3 hub to the left USB 3 port, my 1 TB Seagate backup drive into the USB 3 hub, my iPhone 4S into the USB 3 hub and my iPhone 6 Plus into the right USB 3 port, my wifi would drop and I was not able to see ANY SSID's except for the one I was just connected to. I unplugged my iPhone 6 Plus and then 2 more SSID's appeared (the xfinity wifi in my house and my next door neighbors) and I was then back on my wifi and I could ping my gateway. I then unplugged the iPhone 4S and 3 more SSID's suddenly appeared, I then unplugged the 1 TB Seagate drive and USB 3 hub and now all 12 SSID's were in the wifi network list as usual.

Then today I had the lid closed and the 1 TB Seagate drive plugged in. When I raised the lid and tried using the internet it was a no go. I turned the wifi off and back on but still no go. I then unplugged the 1 TB Seagate drive and then it connected to wifi........ Has anyone else ever noticed this behavior with their MBP prior to the 10.10.4 update?