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dk001

macrumors demi-god
Original poster
Oct 3, 2014
10,475
14,762
Sage, Lightning, and Mountains
Looking for some suggestions or help.

Updated my rMB to HS 10.13.1 - after opening the lid and awakening the device, WiFi, even though it says active will not transmit / receive any data. This holds true even if I change WiFi points.
To correct this, I have to turn WiFi off then turn WiFi back on. This fixes the issue every time.

Retina MB 2015 (MacBook 8,1)

I have this issue only since updating to HS and only on my rMB.

Thanks in advance :confused:
 

ATC

macrumors 65816
Apr 25, 2008
1,183
430
Canada
Sorry for bumping this but I seem to be having the same issue with my iMac running 10.13.2.

Basically, and it's very random so far, my wifi would show as ON and connected but no internet. Pages just sit there waiting to load (blue bar in safari just freezes about a third of the way) and no error messages at all. FWIW, in bootcamp on same iMac (Windows 10) this does not happen, and neither has this ever happened before HS. So it appears to be HS-related.

The Fix: Turn Wifi off then back on and it's back to normal - until it randomly happens again later. It's very frustrating.
 

EugW

macrumors G5
Jun 18, 2017
13,543
11,025
I'm curious. What WiFi routers are you using?

I have 5 different Macs on this house on High Sierra and none have this problem, but I am using Apple Airports. No third party WiFi access points.
 

ATC

macrumors 65816
Apr 25, 2008
1,183
430
Canada
try changing the wifi channel on your router; at least, this fixed the problem for me (on my macbook; my pro was fine...).

My router right now is set to channel 108 . I can change to one of the available channels in a drop-down list. The channel numbers in that list appear random (e.g. 36, 40, 44, 48, 149, 153, 157 etc...).

On yours did you just pick a random channel number?

EDIT: I just tried a couple of different channels and the issue is still there.

I'm curious. What WiFi routers are you using?

I have 5 different Macs on this house on High Sierra and none have this problem, but I am using Apple Airports. No third party WiFi access points.

It's not an Apple router, mine is an Actiontec T3200M mode/router that my ISP provided me (2.4 and 5GHz, using 5GHz for all our devices including this mac). We have no issues with it for the dozen or so other wireless devices (smart TVs, iOS devices, a couple of andoird devices and a chromebook) except for our mac (and only in HS, in Windows bootcamp this issue isn't there).
 
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Marcopolo53

macrumors regular
Oct 21, 2016
146
27
Toronto
Running a Segemcom HomeHub 2000 from ISP with both 2.4 and 5 Ghz at same time. Both SSIDs bear the same name. iMac late 2012 10.13.2 (Clean install), rMB late 2016 also clean install 10.13.2 plus iPhone SE 2016 and iOS 11.xx fully updated and have zero issues.
 

EugW

macrumors G5
Jun 18, 2017
13,543
11,025
It's not an Apple router, mine is an Actiontec T3200M mode/router that my ISP provided me (2.4 and 5GHz, using 5GHz for all our devices including this mac). We have no issues with it for the dozen or so other wireless devices (smart TVs, iOS devices, a couple of andoird devices and a chromebook) except for our mac (and only in HS, in Windows bootcamp this issue isn't there).
I've had this problem before with third party routers and Apple products, occasionally, and it's not all iOS or macOS versions. However, since I switched to Apple routers, all those problems have disappeared.

In my case I use the ISP's router, but use the Airports as access points.

Have you tried using 2.4 GHz? You generally get better range on 2.4 anyway.
 

ATC

macrumors 65816
Apr 25, 2008
1,183
430
Canada
I've had this problem before with third party routers and Apple products, occasionally, and it's not all iOS or macOS versions. However, since I switched to Apple routers, all those problems have disappeared.

In my case I use the ISP's router, but use the Airports as access points.

Have you tried using 2.4 GHz? You generally get better range on 2.4 anyway.

Thanks. I'll have to try 2.4 although my ISP's documentation say that my 100mbit speed is guaranteed only through 5GHz band, but I'll take a drop in speed in exchange for reliability. I may also look at power-line adapter kits, bypassing the wifi entirely on this mac.
 
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EugW

macrumors G5
Jun 18, 2017
13,543
11,025
Thanks. I'll have to try 2.4 although my ISP's documentation say that my 100mbit speed is guaranteed only through 5GHz band, but I'll take a drop in speed in exchange for reliability. I may also look at power-line adapter kits, bypassing the wifi entirely on this mac.
You can try power line but they are notoriously unreliable. Make sure you get it from a store with a good return policy.
 
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Marcopolo53

macrumors regular
Oct 21, 2016
146
27
Toronto
Thanks. I'll have to try 2.4 although my ISP's documentation say that my 100mbit speed is guaranteed only through 5GHz band, but I'll take a drop in speed in exchange for reliability. I may also look at power-line adapter kits, bypassing the wifi entirely on this mac.

Are you in congested Wifi environment ? Being from Canada, some ISPs provide Routers originating in USA and are never configured to broadcast to Canadian Standards. I know in my place 50 - 55% of other Access points in my condo are all broadcasting as USA and not Canada. If your computer is expecting Canada and receiving interference from other Access Points in USA standards it can and will have negative impact. I had to position my Router and desktop , laptop and iPhone to get maximum direct line-of-sight to router to minimize this problem
 

ATC

macrumors 65816
Apr 25, 2008
1,183
430
Canada
Are you in congested Wifi environment ? Being from Canada, some ISPs provide Routers originating in USA and are never configured to broadcast to Canadian Standards. I know in my place 50 - 55% of other Access points in my condo are all broadcasting as USA and not Canada. If your computer is expecting Canada and receiving interference from other Access Points in USA standards it can and will have negative impact. I had to position my Router and desktop , laptop and iPhone to get maximum direct line-of-sight to router to minimize this problem

That's interesting but I don't believe this applies to my situation. I'm in the opposite of what I'd consider a congested wifi area (standalone house on a sparsely populated crescent) and the same wifi/router has worked great for as long as I've had it, under El Capitan and Sierra (this issue only appeared after I clean installed High Sierra). I also have zero issues with this router on all my other devices, including this same mac (under bootcamped windows 10).
 
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dk001

macrumors demi-god
Original poster
Oct 3, 2014
10,475
14,762
Sage, Lightning, and Mountains
try changing the wifi channel on your router; at least, this fixed the problem for me (on my macbook; my pro was fine...).

From the discussion on the Apple Forum (my post)

What really interests and concerns me is that all of the other wifi devices in my household work just fine except my rMB once I updated to High Sierra.
Android phones and tablets.
Playstation 4
iPhones
iPads
Windowss pc’s
Roku
Chromecast
Chromecast
Smart TV’s
etc...
I am getting so tired of these types of problems for seemingly every upgrade or update.
Sigh ...
btw - I did the router route and I still have the no wifi issue on wakening my rMB.
Apple walked me through doing some changes. No help :(
 
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