WiFried: iOS 8 WiFi Issue • Hacker News Board

Re: WiFried: iOS 8 WiFi Issue

#51

Post by JoshTheGeek » Tue, Nov 25, 2014, 2:47 PM UTC

craigching wrote: post #40

Osiris wrote: post #20

I have been suffering some really bizarre WiFi issues on my rMBP since upgrading to 10.10. I'll suddenly get latencies of a second or more. Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. I just tested this fix to do sudo ifconfig awdl0 down and my ping times are consistently low.

> Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. This is exactly the problem I'm having both with my 10.10 MBP and my iPhones/iPads running iOS8. Glad to hear bringing down awdl0 fixes it, I'm going to try it as well, but it seems there's no solution for non-jailbroken iOS devices yet :( Here's the weird thing, my devices (both i and MBP) are fine…

Unrelated: Don't factory reset your router. The software to set it up requires you to downgrade to 10.7 or something. It'd be nice if linksys would update their software, or at least remove the version cap.

Re: WiFried: iOS 8 WiFi Issue

#52

Post by jaxbot » Tue, Nov 25, 2014, 2:49 PM UTC

PakG1 wrote: post #18

I gotta say that this is annoying. I currently work for a place where we're all Macs and iOS. Many, many devices all over the place, all broadcasting for AirDrop and AirPlay. We're a school, they are useful features. Everything connects to a mesh wifi network. Neighbouring APs are of course on different channels. It's like we're the perfect environment to experience this problem on a massive scale. We've tested and r…

I work for a university, and am a student at the same university. WiFi in lecture halls has been complete garbage since 10.10.1 hit. Students love their Macbooks, and in a room with 30+ of them, our wifi connection drops at least every minute.

Re: WiFried: iOS 8 WiFi Issue

#53

Post by tuacker » Tue, Nov 25, 2014, 3:07 PM UTC

ralucam wrote: post #19

pkaye wrote: post #8

What is the impact on Yosemite if I don't actively use AirDrop. Does it still cause WiFi issues? I'm not clear on the severity of the issue.

The amount of usage doesn't seem to matter in my testing. I didn't share anything (and I also set the discoverable setting to 'no one'), and I see a big difference in the throughput: 38 Mbps (awdl0 interface up) vs ~80 Mbps (awdl0 interface down). Yikes. This was a TCP test using iperf, between the laptop and another machine on the lan. Turning off bluetooth didn't help, so it looks like it's easy to be affected by t…

Ouch, I just ran iperf on mine (rMBP wifi to LAN server). I get ~30 Mbits/sec with awdl0 down, and ~9 Mbits/sec with the interface up. This explains why I've been having some problems streaming movies over wifi for a while now, probably since upgrading to Yosemite.

Re: WiFried: iOS 8 WiFi Issue

#54

Post by giarc » Tue, Nov 25, 2014, 3:18 PM UTC

jlarocco wrote: post #49

Seems Apple's quality control has really been screwing up the last few releases. I haven't updated to iOS 8 or OSX 10.10, and the way things are going I'm not going to any time soon. If they keep this up, I'm switching back to Android and Linux.

I totally agree. I still get weird graphical changes when I open an app group (corners contract and expand). This has been the case for every iOS 8 version update and continues through 2 restores.

Re: WiFried: iOS 8 WiFi Issue

#55

Post by RoseO » Tue, Nov 25, 2014, 3:20 PM UTC

Osiris wrote: post #20

I have been suffering some really bizarre WiFi issues on my rMBP since upgrading to 10.10. I'll suddenly get latencies of a second or more. Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. I just tested this fix to do sudo ifconfig awdl0 down and my ping times are consistently low.

I've been experiencing this problem a lot at my university, I'll be trying this out.

Re: WiFried: iOS 8 WiFi Issue

#56

Post by mscman » Tue, Nov 25, 2014, 3:40 PM UTC

robmcm wrote: post #24

lyinsteve wrote: post #2

Did he file a bug report?

It doesn't seem like a bug, it seems like a trade off. In order to work over wifi it needs to flick between channels, reducing the uptime on the current channel you are using.

Except my phone will get itself in a state where that latency stays high, and bandwidth drops for a long time. Only solution is to turn wifi off/on. That definitely seems like a bug.

I'm fine with lower throughput while discovery is going on, but when nothing's changed on the network I've been on for days, and my phone can't use wifi anymore, that's a bug.

Re: WiFried: iOS 8 WiFi Issue

#57

Post by ploxiln » Tue, Nov 25, 2014, 3:45 PM UTC

craigching wrote: post #40

Osiris wrote: post #20

I have been suffering some really bizarre WiFi issues on my rMBP since upgrading to 10.10. I'll suddenly get latencies of a second or more. Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. I just tested this fix to do sudo ifconfig awdl0 down and my ping times are consistently low.

> Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. This is exactly the problem I'm having both with my 10.10 MBP and my iPhones/iPads running iOS8. Glad to hear bringing down awdl0 fixes it, I'm going to try it as well, but it seems there's no solution for non-jailbroken iOS devices yet :( Here's the weird thing, my devices (both i and MBP) are fine…

The difference between your work and home wifi networks might be multicast settings. Another idea is that at work there's a number of wifi APs on a number of channels, so your devices don't have to switch channels to do the awdl0 broadcast/receive.

Re: WiFried: iOS 8 WiFi Issue

#58

Post by bobbyi_settv » Tue, Nov 25, 2014, 3:58 PM UTC

jlarocco wrote: post #49

Seems Apple's quality control has really been screwing up the last few releases. I haven't updated to iOS 8 or OSX 10.10, and the way things are going I'm not going to any time soon. If they keep this up, I'm switching back to Android and Linux.

Given how many circa 2012 and later Apple laptops I've had to deal with that no longer worker due to ventilation/ GPU issues, I think they're quality control went way downhill a while ago.

Re: WiFried: iOS 8 WiFi Issue

#59

Post by freehunter » Tue, Nov 25, 2014, 4:09 PM UTC

jlarocco wrote: post #49

Seems Apple's quality control has really been screwing up the last few releases. I haven't updated to iOS 8 or OSX 10.10, and the way things are going I'm not going to any time soon. If they keep this up, I'm switching back to Android and Linux.

All of the problems I've experienced with iOS 8 have gone away in the subsequent patches, with one exception: turning the screen off occasionally activates Siri, which immediately gets deactivated since the screen turns off. The only thing that happens is the phone goes "ding-ding" like when Siri is turned on, even when the phone has the silent switch enabled.

Quite annoying when I'm at a quiet client site and my phone makes that noise.

--edit: I should say all of the problems except the fact that the wifi is so unbearably slow and unreliable that I often resort to LTE when I need to get something done. Wifi sucks on iOS8.

Re: WiFried: iOS 8 WiFi Issue

#60

Post by williamstein » Tue, Nov 25, 2014, 5:54 PM UTC

lnanek2 wrote: post #30

Osiris wrote: post #20

I have been suffering some really bizarre WiFi issues on my rMBP since upgrading to 10.10. I'll suddenly get latencies of a second or more. Switching WiFi networks or even turning WiFi off and back on again will solve the problem for a short period of time. I just tested this fix to do sudo ifconfig awdl0 down and my ping times are consistently low.

ditto here

Ditto here too. I've been getting driven crazy by this with my rMBP for a while now. I'm sooooo glad to have just seen this article on HN!