Q: OSX Yosemite Wifi issues

Protestors set up a website called “Drop Dropbox,” which says the appointment of Ms. Rice is “deeply disturbing.” The site is encouraging people to switch to competing cloud storage services.

One of the main arguments against Ms. Rice is based on a 2005 television interview in which she defended the N.S.A.’s warrantless surveillance program.

http://bits.blogs.nytimes.com/2014/04/18/protests-continue-against-dropbox-after -appointing-condoleezza-rice-to-board/?_php=true&_type=blogs&_r=0

Just saying...
:-)

Having wireless diagnostics running the background (spotlight, "wireless diagnostics") seems to be helping me keep the connection alive much longer.  I also saw someone say having a terminal window pinging your router (ping 192.168.1.1 for instance) constantly seems to help keep the connection alive.

File these both under shouldn't be required acts of desparation.

your Solution worked for my imac as well...

thanks a lot

I discovered that downloading IOS 8.1 using iTunes on my Yosemite MacBookPro (mid-2010) froze all internet access on both the MBP and an iPhone (IOS 8) over wifi. Stopping the iTunes download brought back internet access over wifi to both devices. Having been bit by 10.10, I'll wait on 8.1.

Way to bring nothing important to the discussion.

I've got a Mid 2014 rMBP. Installed Yosemite via Apple Store. WiFi died. The only way I was able to get back online was to tether to my iPhone. Setup an appointment with my local genius bar. Backed all my data up and went to the genius bar. They reinstalled Mavericks at my request with no questions asked and sent me on my way. WiFi works perfectly now. I'll wait until Yosemite goes through several revisions.

Same effect using an ethernet cable on the Mac -- browsers (Safari, Chrome, Firefox) stopped pulling data when the iTunes IOS 8.1 download starts. There must be some serious blocking when the iTunes download pipe opens up, wifi or ethernet. I might experiment with other apps that pull big files down.

I too have fallen victim to abysmal WiFi performance after upgrading from Mavericks to Yosemite.  I used to always connect at 5GH in my home office and that became completely unusable!  Switching to 2.4GH was better (at least I could connect) but the performance was completely unreliable.  One minute a web page would load, the next minute Safari and anything using WiFi comm stopped.  I initially thought that maybe my previous install of Mavericks had something that was causing the problem.  So, I nuked my had disk and installed Yosemite - clean install!  The problem remained and the symptoms were no different.  Really frustrating.  The logs filled up with the WiFi supplicant restarting and re-scanning several times over a period of 5 minutes or less (usually tied to how many apps were attempting to use WiFi comm.  As a result of the constant connection re-starts there were hundreds of DNS errors as well.

I sincerely hope that Apple takes this seriously and gets a fix out fast!  This is my work computer and I don't want to have to back-rev to Mavericks after everything I have already done.

I Have tried all the arbitrary fixes supplied here and none of them have worked long term. I resorted to restoring to a Beta version that had worked fine in the past - but of course it started acting up, too. After many painful hours of trying desperately to get the Yosemite installer from the App Store, I went ahead and did a completely clean install. I figured my Mac could use the maintenance and I thought there was a chance it could help. Although the issue is not completely remedied After the fresh install, it does seem BETTER. I have been able to download gigabytes of data without a drop which is monumental. I have only experienced 1 or 2 drops in the past couple of hours which is a massive improvement. The computer is at least usable again. Apple needs to get a fix out ASAP. I agree with the above poster that news sites should be informed.

Also i contacted acted the IT Dept. At my University about the issue. They said they have heard the same reports from other users and concur that it is, in fact, an OS bug - which I think we all know already But it adds to the credibility of the claim.

(Sent from my iPhone - typos possible)

I know it sounds very obvious, but reseting the PRAM (pressing CMD+ALT+P+R while rebooting)  worked for me.

Totally agree with you!!!

swedinburgh wrote:

 

Having wireless diagnostics running the background (spotlight, "wireless diagnostics") seems to be helping me keep the connection alive much longer.

I saw this message in /var/log/system.log when it happened:

AirPort: Link Down on en0. Reason 4 (Disassociated due to inactivity)

And that seems to jive with your desperation fix: keep activity going over the wireless.  It's silly.  Apparently Apple disabled some sort of keep-alive in their wireless code for Yosemite.

Warning to those considering installing Yosemite! If you back up with Time Capsule, please read this! 

I installed Yosemite on 2 Macbook Pros  (Retina 2013).  One is working well.  The other is definitely NOT.  I contacted Apple Care for assistance.  I decided to restore from my Time Capsule using a date prior to my Yosemite installation.  When it repeatedly gave me an error message, I contacted AppleCare for support.  I learned that once Yosemite is installed, I can't just restore from the Maverick days, at least not without many steps including downloading Maverick on a flash drive, yada yada yada.  Once I have a good Yosemite backup on my Time Capsule, I can restore easily from that.  But, as I understand it, I can't go back to a date a month ago and restore the whole system anymore.  I can go back and get individual files and pictures pre-Yosemite, but who wants to do it that way? 

My problem with Yosemite started with the repeated, frequent and random disconnect from WiFi. 

Early 2013 Macbook Pro Retina - UVerse Router doing the routing, and TimeCapsule (the latest) providing WiFi  (always worked perfectly with Mavericks)

My problem is not complete lack of connectivity, but more one of certain pages just "hanging".  I notice the same issue with both Safari & Chrome, and happens to be especially prevalent when using Google for search.  Often it will lag or hang instead of providing search results.  Other times, when I get results and click on one, it is unresponsive.  I don't mean to suggest the problem is only Google related, but I notice it quite a bit there.

I experienced this problem during Beta test as well, and went back to Mavericks several times out of frustration.  Now, even with a clean install of Yosemite, the problem is back.

Finally, I have found a fix, but I'm not confident it is a good one.  On the Mac, under "Network Preferences", "Advanced", go to the "TCP/IP" Tab, and under "Configure IPv6"  got to the drop down and select "Link-Local Only".  I'm a little uncomfortable with this setting since I have to be honest and say I don't fully understand what I've done, and the ramifications.  However for now, I am able to use the internet with no evident problems (although it *might* be a tiny bit slower... or that could be my imagination)

Rookie mistake, I should have known better. Always wait at least week before installing new stuff and see if there are issues. My MBP 15 inch from early 2011 has super slow wifi now. Even got disconnected at home twice yesterday, this never happened on Mavericks. Pages load in slo-mo, very bad. I have 16GB RAM and an SSD and the webpages load like I am on dial-up on a 100 Mbps connection.