I am seeing this same problem on a late 2013 retina macbook pro (11,1) running Debian (jessie/sid) with Linux 3.14.13-2 (same BCM4360 chipset). I am using the Broadcom driver from the Ubuntu repos, bcmwl-kernel- source 6.30.223.141+b
I do not see any different behaviour between 5GHz or 2.4GHz. Tried both on different APs. Maybe the title should be changed. I also ruled out intereference, the driver reports a steady signal level and link quality values when this happens, plus other stations in the network work perfectly fine, including other identical Macbook Pros running OSX. As James pointed out, reloading the driver solves the problem, until it occurs again. As a side note, I also tried the Windows XP Drivers under ndiswrapper (bcmwl5 version 6.30.223.228 obtained from the ASUS PCE-AC68 driver setup) and it behaves in a surprisingly similar fashion. From 0 to 100 packet lost at random. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bcmwl in Ubuntu. https://bugs.launchpad.net/bugs/1256158 Title: BCM4360 High packet loss at 5GHz Status in “bcmwl” package in Ubuntu: Confirmed Bug description: I have an ASUS PCE-AC68 adapter (BCM4360 chipset), running under 13.10, kernel 3.11.0-13-generic x86_64, bcmwl-kernel-source 6.30.223.141+bdcom-0ubuntu1. The AP supports 802.11a/b/g/n/ac. The card and adapter work perfectly when connected in the 2.4GHz band and 5GHz low channels (36-48). When connecting at 5GHz high channels (149-161), there are no obvious errors, but packet loss to the gateway is extremely high (50-80%). This behavior is very bursty, alternating between no, and total packet loss on a timescale ranging from a few seconds to a few minutes. Power management is off, and syslog/kern.log don't provide any useful clues. Based on the observed pattern of the packet loss, and the performance of other 5GHz devices connected to the same AP, I don't think it is an interference issue. I'm unsure as to how to proceed with generating some more useful logging, so any suggestions would be appreciated. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1256158/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
