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All replies
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Helpful answers
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Jan 31, 2015 11:13 AM in response to chip.rby Akos G. Garai,Bob,
Just to let you know...Apple Wireless Support does contact people and ask for traces and full detailed description of the problema they have
(Or at least they did contact me...)
They are trying to figure it out...
For me,I'm out of options so the next step is a clean wipe and full re-install of 10.10.2 from a USB after an SMC and PRAM resets tomorrow.
Will let all know (including support) if the "virgin" system behaves the same...
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Jan 31, 2015 11:27 AM in response to chip.rby chip.r,Looks like IPv6 had been re-enabled on my system. Must have happened when I was playing with recreating my Locations. I just changed it back to "Link-local only" and purchased Wifi Explorer to watch the test. It's looking better but I haven't fully tested 5Ghz/2.4Ghz handoffs. So many variables...
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Jan 31, 2015 11:28 AM in response to Akos G. Garaiby Genevios,I already installed the new virgin operation system and also i have this problem. So this is not solution. I tried to change some settings in my router but nothing. Most of my friends also have this problem..Apple are you normaly or what?
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Jan 31, 2015 4:49 PM in response to tomstephens89by bearwife,So, today I finally took my MacPro with Retina display to the Apple Store genius counter, and they dumped the extensions I had in Safari that are supposed to block ads (at least one of which, Avast, they said is malware.) I'm back home and my wifi is blazing fast, plus Yosemite's latest update has been applied -- it is a fast download now.
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Jan 31, 2015 5:46 PM in response to clausbvcby dexty24,did you select any specific channels ? I selected 6 and 44... Did not help
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Jan 31, 2015 6:37 PM in response to Akos G. Garaiby hexdiy,As many people have posted before: switch off Handoff, wake-on-network, and Airdrop.
And please for once read Mario Ciabarra's enlightened article on the subject very well: we are mainly discussing a Bonjour issue here. Since Discoveryd, Bonjour is polling Bluetooth- working well as it was before- as well as Apple Wireless Discovery Link (AWDL0)- which seems to go awry.
Why? Because in the latter case (with Apple AWDL capable hardware roughly starting in 2012), the Broadcom WiFi + Bluetooth chip has to communicate over 2 channels at once (WiFi + BT), both channels being in the same 2.4 GHz frequency band.
Broadcom boasts this double feature without mutual interference, but I don't think they actually come up to par.
Taking into consideration the Broadcom WiFi/Bluetooth chip on your Airport card is not exactly top notch, and the Broadcom drivers as well as firmware for those are borderline obsolete, I think Apple is asking for trouble. And that translates as an irreparable hardware handicap.
All things considered, I think Mario Ciabarra has at least pointed us to most if not all Yosemite specific WiFi and Bluetooth issues (WiFi dropouts; upstream WiFi ok, but downstream WiFi sluggish; poor WiFi performance when Bluetooth turned on; etc...): the Broadcom WiFi/ Bluetooth chip used in your Airport card. Irreparable hardware damage for you as well as Apple.medium.com/@mariociabarra/wifriedx-in-depth-look-at-yosemite-wifi-and-awdl-airdr op-41a93eb22e48
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Jan 31, 2015 7:24 PM in response to hexdiyby j-m-d,why would these issues have been invisible to Apple Co. before release ????
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Jan 31, 2015 10:28 PM in response to Ikesterby AndreasSt,That's the thing. I don't think they can really fix this without losing face and removing a big chuck of functionality that was heralded as one of the major new features of Yosemite: Handoff.
This is obviously speculation on my part, but given all the testing and error reports over the last few months, I believe it's quite clear that this is a software problem that was introduced with 10.10 and that they're desperately trying to fix/make work.
So if I had to guess, regarding your statements above I would say
a) false: they do know.
b) true: because, sadly, there may be no true, absolute fix. It's possible that the only way to fix it for good is to disable all the Handoff features and revert back to the Mavericks networking stack and drivers.
Yes, I also agree. They're trying to provide software features that aren't really supported by the hardware. Read the article from the WifriedX author If Apple built in two separate WiFi cards in all their devices this would be another story.
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Jan 31, 2015 11:34 PM in response to Akos G. Garaiby wifiguru,Akos,
What router make and model are you using ?
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Feb 1, 2015 12:21 AM in response to wifiguruby Akos G. Garai,Hei Guru,
It's an ISP goofed D-Link DIR-615, but it's the same with a Linksys WRT-150 and also a D-Link DAP-2553... (interesting enough is that my Nexus 5 has no issues at all).
So I'd done a clean install (from USB) straight into 10.10.2... Just to collect some data for Apple Support (having run wireless diagnostics)
For interest here are the results (HW is MBA early 2014 model...Wi-Fi is: 0x14E4, 0x117, Broadcom BCM43xx 1.0 (FW: 7.15.159.13.12)
Having BT on or off does not matter whether I'm close to the AP or not - Actually great coverage and strong reception on really tricky places, so heads up for that...
Connecting something over BT on the other hand either drops the downlink completely or simply just cuts it in half (the only non-default setting used was Airdrop: visible to none)...
I guess in my case it's truly HW related as I have a serious drop in DL throughput when having BT connected to something (BT in itself does not matter)...
(And no, my baby came with Yosemite on the first place, so no way moving to Maverics)
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Feb 1, 2015 12:55 AM in response to Akos G. Garaiby Akos G. Garai,Interesting...Now that I'd dug myself into the logs... Apple support, please read this: The link quality degrades significantly NOT when the BT is connected...But when I actually start a speedtest (heavy transfer when the receiver and the transmitter are ramped up)...
Could someone else confirm the same who has Wi-Fi and bluetooth coexistency problems like I do?
I actually think now that at least in my case it might be hardware related (or possibly driver)...
(Sounds funny...But when BT is on it looks like the receiving radio amplifier just looses powered gain or the antenna circuit just gets shut down...)
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Feb 1, 2015 4:45 AM in response to dexty24by clausbvc,Hi
I kept the channel choice for both channels automatic, it was only the radiomode I changed away from automatic.
Still runs without problems as I write.
Best
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Feb 1, 2015 7:00 AM in response to hexdiyby jndupuis1,Hello again. After doing a little research and actually looking at the Broadcom board itself, my electronics background kicked in. Especially after revisiting WiFriedX and reading your new post. After studying the shielding in place over the Bluetooth Chip and Wi-Fi Chip soldered together on the same side of the board next to each other, the individual shielding over each chip is soldered next to each other on the same trace. This would explain the broadcast noise interference between the two. Redesign of this board should put the chips A) farther apart - shielded or B) one on the other side of the board - both shielded or C) two separate boards each shielded from one another. No matter, the current board design indicates noise interference by both chips being side by side and two shields soldered side by side on the same trace. Amplified by being enclosed in an aluminum case with the motherboard and Wi-Fi antenna. Solution: Redesign of the Broadcom Board and Proper shielding and placement of the Bluetooth and Wi-Fi chips. This could be the whole of it in a nut shell and explain USB 3.0 noise interference as well. Hope this makes sense. It does to me given my electronic experience. Let's see if Apple (bytes). Your thoughts please.
