I've a new macbook pro and one of the new Vm routers (with wireless ac).
I've noticed that whenever my macbook goes to sleep, even for a few minutes it will typically drop the WiFi connection, it appears to be connected but it's not, I have to turn off wifi and turn it back on to reconnect.
This might be related to OSX Yosemite, as that has some Wifi problems, however I don't really know how to tell!
Saying that, there's a problem with the power levels on your hub at the moment, the upstream levels are too high. I'll send you a PM so we can address that with an engineer booking. Get back to me via PM when you can and I'll book that in asap
I too have this issue. My old Macbook Pro (2011) never had this issue, but my new model (three weeks old) has exactly the same issue. I have tried all the advice in the OSX daily post, no difference. I have also started a dialogue with Apple tech support. Between us we have tried numerous things, nothing has resolved the issue so far.
The disconnects manifest themselves as I am unable to ping the router, you get constant time outs. Usually happens after the machine has been in sleep mode. It occurs on both the 2.4 and 5ghz frequencies.
I have also spoken to Virgin Media tech to see if my router was at the latest firmware revision, he said it was up to date.
Any help gratefully received, this is driving me nuts.
Thank you for your response. Yes it will reconnect if you disable and re-enable WiFi. However the issue will also occur intermittently after the Macbook has been awake for some time. The issue tends to occur more after a "sleep". The WiFi actually remains connected, but Safari stops working and if you ping the router it times out and cannot be reached.
A re-boot of the router and/or the Macbook will usually resolve the issue, but sooner to later it will come back. I have tried a DHCP reservation, this had no effect and the issue still occurs.