ShaneD90

Q: Late 2013 Macbook Pro Retina 13'' Wifi Issues

My new MBPR's wifi is very slow and constantly drops the connection, although it is showing that it is always connected. If I restart the computer it fixes the problem for a little bit then it starts again. I have a 2012 Macbook Pro on the same network with no isseues, and I will have to use it sometimes just to be able to browse the web. Is there any way to fix the issue on the new Macbook?

MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9)

Posted on Nov 7, 2013 7:38 AM

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Q: Late 2013 Macbook Pro Retina 13'' Wifi Issues

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  • by johnniecache,

    johnniecache johnniecache Jun 20, 2014 11:48 PM in response to veggietec
    Level 1 (5 points)
    Jun 20, 2014 11:48 PM in response to veggietec

    Yes, even when you have no disconnects, performance is also really bad. Look at my comparison of windows and mavericks on page 29 of this thread. I get a maximum of 15-20 MB/s download speed over 5GHz. Also the transfer "collapses" every 30 seconds, see this screenshot:

    mac_os.png

     

    Now look at my Windows results:

    speed2.png

  • by Csound1,

    Csound1 Csound1 Jun 21, 2014 1:10 AM in response to johnniecache
    Level 9 (51,353 points)
    Desktops
    Jun 21, 2014 1:10 AM in response to johnniecache

    And what do those pictures tell us, or are supposed to tell us?

  • by veggietec,

    veggietec veggietec Jun 21, 2014 9:14 AM in response to johnniecache
    Level 1 (0 points)
    Jun 21, 2014 9:14 AM in response to johnniecache

    I tested it now on both systems (Win8.1 Bootcamp). 11,5MB/s (~90Mbit although my wi-fi can handle 300..) on both systems, so the final test will be on monday at work. If the speed in another wi-fi network is still that slow it is definitly a hardware problem...

  • by johnniecache,

    johnniecache johnniecache Jun 21, 2014 9:40 AM in response to Csound1
    Level 1 (5 points)
    Jun 21, 2014 9:40 AM in response to Csound1

    Csound1 wrote:

     

    And what do those pictures tell us, or are supposed to tell us?

    ???

    1. Its the same test setup, same hardware, but 3x the transfer rate on windows?

    2. Large file transfer collapses on mavericks several time, see picture

  • by johnniecache,

    johnniecache johnniecache Jun 21, 2014 9:44 AM in response to veggietec
    Level 1 (5 points)
    Jun 21, 2014 9:44 AM in response to veggietec

    veggietec wrote:

     

    I tested it now on both systems (Win8.1 Bootcamp). 11,5MB/s (~90Mbit although my wi-fi can handle 300..) on both systems, so the final test will be on monday at work. If the speed in another wi-fi network is still that slow it is definitly a hardware problem...

    If its 802.11n, i think your transfer speed is ok. What about the stability? You said it slowed down on Mac OS, did you experience the same problems on Windows?

  • by veggietec,

    veggietec veggietec Jun 21, 2014 9:55 AM in response to johnniecache
    Level 1 (0 points)
    Jun 21, 2014 9:55 AM in response to johnniecache

    yeah it's 802.11n but I lack of around 7MB/s. On your screen you have 44MB/s - do you use an 'ac'-network?


    After I deactivated the 2.4GHz wi-fi setup on my router the 11,5MB/s on Mac OS were constant like on the bootcamp Win setup. (Unfortunately my printer can't connect to a 5GHz, so I need the 2.4 wi-fi...)

     

     

    But on 802.11n the speed should be at around 18MB/s not 11,5 - maybe due to other wi-fi networks around my appartment I have this 7MB/s lack?


    I'll check if a wi-fi channel change can help.

  • by veggietec,

    veggietec veggietec Jun 21, 2014 10:29 AM in response to veggietec
    Level 1 (0 points)
    Jun 21, 2014 10:29 AM in response to veggietec

    Okay... apparently after turning off the 2.4GHz wi-if on my router and changing the channel after reading this page, I have constantly 2-4ms to my router on pinging (down from 30-80ms before) and the transfer rate to my NAS after 8GB is at around 10.5-11.5MB/s...

  • by johnniecache,

    johnniecache johnniecache Jun 21, 2014 1:40 PM in response to veggietec
    Level 1 (5 points)
    Jun 21, 2014 1:40 PM in response to veggietec

    hm.. just curious. If your router is only 802.11n, does it have Gigabit Ethernet? How did you connect your NAS to the router? If its a 100Mbit Ethernet Port on the router, that perfectly explains your bottleneck of 11.5 MB/s.

     

    Btw, i also have a printer that needs 2.4 GHz, but modern routers can provide 2.4 GHz and 5Ghz simultaneously.

  • by veggietec,

    veggietec veggietec Jun 21, 2014 2:14 PM in response to johnniecache
    Level 1 (0 points)
    Jun 21, 2014 2:14 PM in response to johnniecache

    Yes the router has 4 Gigabit slots and the NAS can also provide Gigabit. (via Ethernet I have a transfer speed of 70MB/s between NAS & PC)

     

    About the 2.4 & 5 GHz..The router can simultanesouly run both frequencies, but with 2.4GHz activated there is some packet loss

  • by 4rk,

    4rk 4rk Jun 21, 2014 11:37 PM in response to johnniecache
    Level 1 (0 points)
    Jun 21, 2014 11:37 PM in response to johnniecache

    Testing network speed with file transfers is kind of spotty.

    Without installing anything (though you need two machines on a network) you can use netcat to test some transfers as described in:

    http://khmel.org/?p=228

    Change the bs=1000M to bs=1048576000 on a mac, or lop off a couple zeros to get your answer faster, also your answer will be harder to read showing bytes/s.

     

    EG on one machine I did (in two terminals):

    nc -v -l -n 20000 >/dev/null

    and:

    dd if=/dev/zero bs=12485760 count=10 | nc -v -v -n 127.0.0.1 20000

    to get (without using a real network, just the loop in the kernel) ~249MB/s

    as: 10104857600 bytes transferred in 38.628004 secs (261594091 bytes/sec)

    That's ~2090Mbps

     

    If you like something a little more robust look at http://iperf.fr/ again, you'll need two machines, not just a machine and NAS.

  • by João Nunes,

    João Nunes João Nunes Jun 30, 2014 1:15 PM in response to ShaneD90
    Level 1 (0 points)
    Jun 30, 2014 1:15 PM in response to ShaneD90

    10.9.4 out!! Let's try to see if it fixed

  • by PoloMac,

    PoloMac PoloMac Jun 30, 2014 3:16 PM in response to João Nunes
    Level 1 (0 points)
    Jun 30, 2014 3:16 PM in response to João Nunes

    EUREKA

     

    They have fixed what they said was not broken

     

    8 months of dropout misery ends (:->

  • by 4rk,

    4rk 4rk Jun 30, 2014 4:01 PM in response to PoloMac
    Level 1 (0 points)
    Jun 30, 2014 4:01 PM in response to PoloMac

    Can you be more specific? What was fixed how did you confirm that and what are the new wifi version numbers?

  • by PoloMac,

    PoloMac PoloMac Jun 30, 2014 4:35 PM in response to 4rk
    Level 1 (0 points)
    Jun 30, 2014 4:35 PM in response to 4rk

    Update to 10.9.4 and see if your issues are resolved

    Mine are

  • by johnniecache,

    johnniecache johnniecache Jul 2, 2014 12:54 PM in response to ShaneD90
    Level 1 (5 points)
    Jul 2, 2014 12:54 PM in response to ShaneD90

    Still terrible 5Ghz / 802.11ac performance.

    The screen capture shows the SMB2 transfer of a 2 GB file. Look at all the up and down, maxing out at ridiculous 15 MB/s.

    Windows driver gives a smooth file transfer at 3x the speed.

    Screen Shot 2014-07-02 at 21.46.08.png

     

    Im giving up on this now, Apple wont fix this before i buy a new machine.

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