MacBook Pro Wi-Fi problems

[AFEPPL]

What do you mean by reseting the NIC?

Turning it on/off, or removing and readding the interface?

I'm think about relaunching airportd the next time this problem happens. I've restarted my MacBook, so it went away for now.

Remove the wifi config.
http://osxdaily.com/2014/10/25/fix-wi-fi-problems-os-x-yosemite/

You could look over this too.
https://support.apple.com/en-gb/HT202663

Hope that helps.

 

[rpearlberg]

Don't get an Air.

I know an Air user who has the same problem, so the problem is Yosemite.

Getting an AirPort to solve this problem is borderline extortion.

I'm not on Yosemite yet....last night it seemed to work fine though. Who knows.

 

[HunPro]

Remove the wifi config.
http://osxdaily.com/2014/10/25/fix-wi-fi-problems-os-x-yosemite/

Been there. It's already in the topic.

It requires a power cycle, so you might as well skip deleting the config and just restart, as restarting solves it (temporarily)

You could look over this too.
https://support.apple.com/en-gb/HT202663

Hope that helps.

Been there. It says what I already know: MacBook can't reach the internet but it can reach the router.

I've tried wifi logging as well. Nothing showed up during the timeout.

 

[adamhenry]

Been there. It's already in the topic.

It requires a power cycle, so you might as well skip deleting the config and just restart, as restarting solves it (temporarily)



Been there. It says what I already know: MacBook can't reach the internet but it can reach the router.

I've tried wifi logging as well. Nothing showed up during the timeout.

I would sure like to see a packet capture when the failure is occurring. That should be very interesting.

 

[HunPro]

I would sure like to see a packet capture when the failure is occurring. That should be very interesting.

It's been fine since last night's restart, and it may take a while to have this problem again. I will test it then.

 

[Ardmanz]

The problem seems to be back with a vengeance for me.

 

[Kissmyne]

I have had the following steps resolve this issue previously(in no particular order or combination, but if this is a chronic issue I would recommend all) for a variety of Macs, typically those upgrading from another OS X version.

1. Reset SMC.
2. Delete all preferred networks in the preferred networks list.(you may want to have wifi off during this process)
3. Delete the System Configuration folder located in /library/preferences. Restart the Mac

Other possible solutions can involve trying another DNS server, Renewing DHCP lease, or removing the keychain entry for your home network in Keychain Access(if it is specifically happening on your home network or any specific network for that matter).

Hope this helps

 

[Ardmanz]

Thanks, I have followed those steps multiple times but it doesn't help.

What I noticed (this always happened I just forgot to mention it) - I come out of sleep, it will connect for 10-15 seconds and then the page will stop loading and I'll have to turn my wifi off/back on.

I think we'll be waiting for the next iteration of OSX for a fix tbh, even then I'm not so sure.

 

[HunPro]

Thanks, I have followed those steps multiple times but it doesn't help.

What I noticed (this always happened I just forgot to mention it) - I come out of sleep, it will connect for 10-15 seconds and then the page will stop loading and I'll have to turn my wifi off/back on.

I think we'll be waiting for the next iteration of OSX for a fix tbh, even then I'm not so sure.

It's back for me as well, and now it also affects my work network.

It's different somehow, sometimes it stays connected, sometimes it's unreliable. Sometimes I have one ping timeout for every 4-5 pings.

My iPhone's network connection is flawless.

It's ridiculous.

----------

I have had the following steps resolve this issue previously(in no particular order or combination, but if this is a chronic issue I would recommend all) for a variety of Macs, typically those upgrading from another OS X version.

1. Reset SMC.
2. Delete all preferred networks in the preferred networks list.(you may want to have wifi off during this process)
3. Delete the System Configuration folder located in /library/preferences. Restart the Mac

Other possible solutions can involve trying another DNS server, Renewing DHCP lease, or removing the keychain entry for your home network in Keychain Access(if it is specifically happening on your home network or any specific network for that matter).

Hope this helps

These are temporary fixes.

I'm unwilling to restart my machine, this is a $2000 UNIX laptop, not some crappy Windows 98 PC.

9:03 up 12 days, 14:18, 15 users, load averages: 1.64 1.57 1.47

My iPhone's wifi is perfect, and it also has a longer uptime.

 

[HunPro]

Update: wifi logging.

I had a terrible but predictable connectivity problem today at my workplace. Wifi would connect, and within 30 seconds the pings would timeout.

I turned on wifi logging, and this is the point when it always failed:

30/04/15 10:14:34,402 Mail[44582]: No worthy mechs found
30/04/15 10:14:34,402 Mail[44582]: No worthy mechs found
30/04/15 10:14:38,063 Mail[44582]: No worthy mechs found
30/04/15 10:14:38,063 Mail[44582]: No worthy mechs found
30/04/15 10:14:39,279 Mail[44582]: No worthy mechs found
30/04/15 10:14:39,279 Mail[44582]: No worthy mechs found
30/04/15 10:14:41,700 Mail[44582]: No worthy mechs found
30/04/15 10:14:41,700 Mail[44582]: No worthy mechs found
30/04/15 10:14:45,540 Mail[44582]: No worthy mechs found
30/04/15 10:14:45,540 Mail[44582]: No worthy mechs found
30/04/15 10:14:46,757 Mail[44582]: No worthy mechs found
30/04/15 10:14:46,757 Mail[44582]: No worthy mechs found
30/04/15 10:14:50,595 Mail[44582]: No worthy mechs found
30/04/15 10:14:50,595 Mail[44582]: No worthy mechs found
30/04/15 10:14:51,930 Mail[44582]: No worthy mechs found
30/04/15 10:14:51,930 Mail[44582]: No worthy mechs found
30/04/15 10:14:54,489 Mail[44582]: No worthy mechs found
30/04/15 10:14:54,490 Mail[44582]: No worthy mechs found
30/04/15 10:14:57,924 Mail[44582]: No worthy mechs found
30/04/15 10:14:57,924 Mail[44582]: No worthy mechs found
30/04/15 10:14:58,422 Mail[44582]: No worthy mechs found
30/04/15 10:14:58,422 Mail[44582]: No worthy mechs found
30/04/15 10:15:01,000 kernel[0]: IO80211ScanManager::startScanMultiple: Scan request received from 'airportd' (pid 73235) (16 SSIDs, 0 BSSIDs).
30/04/15 10:15:01,000 kernel[0]: IO80211ScanManager::startScanMultiple: Initiating scan.
30/04/15 10:15:02,000 kernel[0]: IO80211ScanManager::scanDone: Scheduling cache purge timer in 30 seconds.
30/04/15 10:15:02,000 kernel[0]: IO80211ScanManager::getScanResult: All scan results returned for 'airportd' (pid 73235).
30/04/15 10:15:02,000 kernel[0]: IO80211ScanManager::startScanMultiple: Scan request received from 'airportd' (pid 73235) (16 SSIDs, 0 BSSIDs).
30/04/15 10:15:02,000 kernel[0]: IO80211ScanManager::startScanMultiple: Initiating scan.

Note that I'm already connected.

Airportd seems to cause this problem, it's scanning for networks, even though I'm connected.

I'm not saying it shouldn't, but in this particular case that's what causes the timeout.

 

[HunPro]

I still have the problem, removing readding interfaces and etc. sometimes solves it. I'm still unwilling to reboot.

Meanwhile: http://furbo.org/2015/05/05/discoveryd-cluster****/

I usually keep things fairly clean on this site. I have a simple metric: would I be embarrassed if my Mom read this post? As you’ve probably guessed from the title, this post is going to be different.

So, Mom, it’s time to stop reading. I’m pissed off and you know how I get when that happens.

In case you’re wondering what I’m talking about, look at this ****. A network process using 100% of the CPU, WiFi disconnecting at random times, and names, names (1), names (2), names (4). All caused by a crappy piece of software called discoveryd.

 

[Kissmyne]

It's back for me as well, and now it also affects my work network.

It's different somehow, sometimes it stays connected, sometimes it's unreliable. Sometimes I have one ping timeout for every 4-5 pings.

My iPhone's network connection is flawless.

It's ridiculous.

----------



These are temporary fixes.

I'm unwilling to restart my machine, this is a $2000 UNIX laptop, not some crappy Windows 98 PC.

9:03 up 12 days, 14:18, 15 users, load averages: 1.64 1.57 1.47

My iPhone's wifi is perfect, and it also has a longer uptime.

These fixes are not temporary, I'm not saying that this would resolve 100% of possible causes, but the steps I described are not temporary fixes. Refusing to restart for some arbitrary reason or another would invalidate many of the steps I mentioned to begin with, so there is no certainty that they would or would not fix your particular issue whether temporarily or permanently.

Why ask for help if you feel you know better? Or if you are going to refuse to do the steps that COULD actually get it working for you(*looks at " I refuse to restart" comments)

Airportd will scan for networks around you even when connected, this is expected behavior.

Just to go over possible resolutions in general for Wifi related issues in OS X Yosemite(some are recaps and may have been mentioned by others). After completing each set of steps verify connectivity in Safari, if you wish to use Network Utility to verify, do not use Ping, use TraceRoute instead. If anyone needs me to elaborate on how to complete these steps, please feel free to PM me. Keep in mind that the steps below are assuming there are no issues with the operating enviroment(i.e. Interference from other devices, signal strength etc..)

1. Turn wifi off, remove any preferred networks listed that are giving you trouble(or if there are several, just remove them all). Also please remove any Keychain Access listings regarding joining that network(Located in Keychain Access App, Keychains>System Category>Password). Restart after completing this(May as well complete suggestion 2 since you are already going to be powering down and then powering back up)

2. Reset SMC, Reset PRAM, After reboot rejoin wireless networks.

3. Go to the System Configuration folder located in /library/preferences. Delete: com.apple.airport.preferences, com.apple.powermanagement.plist, com.apple.wifi.message-tracer.plist, NetworkInterfaces.plist, and Preferences.plist. This WILL require a restart.

4. Verify IP Address is being assigned by router(this is assuming you connect Using DHCP. The address should not look like 169.254.x.x, if it starts with those the router is not assigning your computer an IP address, if this condition exists please go to Network Preferences(System Preferences>Network), click once on Wifi in the Network Interfaces column, then click on Advanced, then click on TCP/IP, finally click on Renew DHCP Lease. Click "Ok", Click "Apply" If the router is assigning the correct format of IP address(ex. 192.168.x.x, 10.0.x.x) this step will not apply to you.

5. If your network topology looks like this Devices(including Mac)>Router>ISP Modem, open Network Utility and try to reach the ISP Modems IP address(IP addresses will vary, but the concept is similar to a Ping of your router) with Ping. You can also use Traceroute for this to confirm that the router is not interfering with communications with the modem. The address formats for your router and ISP modem should not be the same and can create intermittent connectivity issues(third subset of IP address numbers in particular)

6. If you are able to ping the router AND ISP modem(if they are the same device this is one step instead of two), but cannot connect to the internet using Safari(or browser of choice), please go to Network Preferences, select Wifi, Click Advanced, go to DNS, and add another DNS address to use. 8.8.8.8 works if you don't have your own DNS preference to provide. Click "Ok", Click "Apply"

7. Change Network Location, go to Network Preferences, Click on the drop down menu next to "Location, Click "Edit Locations", Add a location( what the location is called is generally irrelevant), Then click "Ok", Then click "Apply". Please be sure that your computer has reconnected to your router after completing this step.

8. Test for internet connectivity in Safe Boot, if you have connectivity in Safe Boot but not in normal mode, there is likely a program you have installed that is creating an internet connectivity issue as a result of unexpected operation issues or customized configurations(i.e. Security Software). Disable/Remove software(including in Login Items) and restart. A restart WILL be required to verify this resolution.

9. Test to see if this issue occurs in another User Account, the "Guest" account would be a great account for this particular purpose(though will require additional steps later on, so it may not save you any time if this is the issue). IF the issue goes away in the guest account, login to your main Admin account and create a new Admin Account. Test connectivity in the "new" admin account, if there are no issues at this point. Go back to the "old" Admin account, and use your preferred method of moving files over to the "new" Admin account(i.e Using external media, using the shared folder, setting permissions to access the new admin home folder, drag and drop etc...).

There are other potential(and unlikely) solutions, to be brief however, if you have gone through all of the applicable steps above, it may be less time consuming to manually backup any of your files(do not use Time Machine or similar, as restoring a TM backup may in fact restore the problem), and then boot to OS X Recovery and perform and Erase and Reinstall as described in this link https://support.apple.com/en-us/HT201376 I'm sure I'll hear some kind of negative comment for suggesting this, but it is what it is. At the point you reach this BTW if your Mac came with a version of OS X prior to OS X Yosemite, you COULD revert to that version using Internet Recovery(2011 or newer)

I hope this helps you in resolving your internet connectivity issues.

 

[motofromua]

Hello.
There is a problem with the Wi-Fi on my MacBookAir (OSX Yosemite 10.10.3). I work with a wireless network with seamless roaming, by HP MSM series controller (one SSId, which broadcast several points in the rooms). I have from time to time there are disconnections, which are treated only on / off Wi-Fi adapter on the Mac. This problem has been on notebooks with Windows, I decided to change driver settings Wi-Fi adapter, specifically option roaming aggressiveness, which should be reduced to the minimum threshold. It is possible that Macbook is constantly looking for the best signal and drop permitted connection. Where can I find this option in the OCX Yosemite?

 

[HunPro]

Bad news: i thought, that Apple ditching discoveryd will solve the problem, but it didn't.

After a 2 week uptime, the Wifi on my MacBook Pro hangs every 10-15 minutes.

My iPhone is fine, so is the router.

The only difference this time is that i can't even ping the router.

 

[eifer]

I still have the problem as well. I don't understand why this happens. All my other wifi devices work perfectly, just not my new MBP.

 

[eifer]

Has a fix ever been found for it? It's still driving me crazy.

 

[Lukkee24]

Has a fix ever been found for it? It's still driving me crazy.

I've got the same problem with my new 13" rMBP! It's so annoying as it renders the device unusable. I came across this temporary fix the other day, which fixed it for about 5 days up until now:

1. Turn off bluetooth.
2. Disconnect all peripherals from your computer.
3. Open System Preferences. In the "Energy Saver" preference, de-select "Wake for network access" (no check, and leave it that way).
4. Open the finder. Select the "Go" menu. Select "computer." Select "Macintosh HD." Go the the "Library" folder. Go to the "Preferences" folder. Find the preference file "com.apple.bluetooth.plist."
5. Rename "com.apple.bluetooth.plist" as "com.apple.bluetooth.plist.old" (i.e. add ".old"). Eventually, if this solution works for you, you can delete this "old" preference file.
6. Restart your computer (this will create a new "com.apple.bluetooth.plist" preference file).
7. Turn bluetooth back on.
Source: https://discussions.apple.com/thread/6803542?start=90&tstart=0

But unfortunately for me the problem just came back about 15 minutes ago, after I refreshed a webpage a few times. My device then went back to the ever-annoying connection dropping every few minutes! I've just followed the above instructions again and for now its working fine, but hopefully it lasts? Contemplating whether it would be worth returning my device and getting a replacement, given its within the return period?

 

[eifer]

As much as I love my macbook pro, I think I may not buy another apple laptop after this. Every other device I own works flawlessly on wifi. It's just the MBP that doesn't. Countless other people are dealing with this problem too. Totally unacceptable.

 

[newlifer]

do you have pirated or any other type os software that might cause this? have you tested the macbook with a fresh install of osx & nothing else installed?

 

[eifer]

Zero pirated software. My MBP has pretty much just the bare essentials installed on it.

 

[newlifer]

Zero pirated software. My MBP has pretty much just the bare essentials installed on it.

get rid of the the bare essentials & give it a shot (format/fresh install) if problem persists we're obviously talking about a hardware issue

 

[eifer]

get rid of the the bare essentials & give it a shot (format/fresh install) if problem persists we're obviously talking about a hardware issue

I don't think it's a hardware issue. I had the same problem in my old macbook pro (late 2008) after I installed one of the recent Mac OS iterations. The issue I'm talking about is an inability to access the internet, despite wifi being connected without any interference.

 

[newlifer]

I don't think it's a hardware issue. I had the same problem in my old macbook pro (late 2008) after I installed one of the recent Mac OS iterations. The issue I'm talking about is an inability to access the internet, despite wifi being connected without any interference.

I had exactly the same problem & it was a software issue. if fresh install doesn't solve this then its apple's responsibility to fix it

 

[Lukkee24]

The Wifi problem has returned again! it really is ridiculous and it's making my MBP very difficult to use. I went to the order status page and it seems you can no longer initiate returns - despite the date previously being 20th Jan - so I'll just have to do a clean install at some point and hope that works - I don't want to end up having to send it for repair, as I can't afford to be laptopless!

 

[Lukkee24]

The problem is back, and that's after completing an OS X reinstall on Monday! Going to try a full 'clean install' this evening.