For the record, I've a MacBook Pro 8,1 using broadcom 4331 chip. I find the bcmwl 6.30 driver consistently unreliable, packets just stop sending randomly and only solution is module unload & reload. I've had much more success (not perfect tho, but 99% reliable) with the older 6.20 driver.
I spent a little time forward porting 6.20 to vivid kernel (3.19). If you're curious, you can give it a go here: http://people.canonical.com/~gerboland/bcmwl-kernel-source_6.20.155.1+bdcom-1ubuntu0_amd64.deb I am back to my 99% reliable wifi as a result. If it helps you, do let me know! -G P.S. the package version is older than the vivid supplied one, so you'll need to pin (apt-mark hold) it to prevent it being upgraded. -- 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/1387221 Title: 14e4:4331 [MacBookPro10,1] bcmwl-kernel-source >= 6.30.223.30+bdcom- 0ubuntu1 fails to see 5GHz networks and is unstable on 2.5GHz Status in bcmwl package in Ubuntu: Triaged Bug description: 1) Utopic Unicorn 14.10 2) mzanetti@noneyet ~ $ apt-cache policy bcmwl-kernel-source bcmwl-kernel-source: Installed: 6.30.223.248+bdcom-0ubuntu1 Candidate: 6.30.223.248+bdcom-0ubuntu1 Version table: *** 6.30.223.248+bdcom-0ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ utopic/restricted amd64 Packages 100 /var/lib/dpkg/status lspci -vvnn | grep -A 9 Network 04:00.0 Network controller [0280]: Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02) Subsystem: Apple Inc. AirPort Extreme [106b:00ef] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Interrupt: pin A routed to IRQ 17 Region 0: Memory at c1900000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: wl sudo dmidecode -s bios-version MBP101.88Z.00EE.B02.1208081132 sudo dmidecode -s bios-release-date 08/08/2012 sudo dmidecode -s system-version 1.0 sudo dmidecode -s baseboard-manufacturer Apple Inc. This is a MacBook Pro Retina 1st Generation 3) What is expected to happen is when one uses the bcmwl-kernel-source package in 14.10, it works on both 2.5Ghz and 5Ghz. 4) What happens instead is after upgrading to saucy or any newer release and installing bcmwl-kernel-source >=6.30.223.30+bdcom- 0ubuntu1 it fails to find any 5GHz networks and connections on 2.5GHz are unstable. Unfortunately, while b43 does detect the chip, it only uses 2.4GHz and it has very slow data rates and connection drops. WORKAROUND: This chip is working perfectly fine on 2.5GHz and 5GHz using version 6.20.155.1+bdcom-0ubuntu6 of the driver. Downgrading the machine to kernel 3.8.x and bcmwl-kernel-source 6.20.155.1+bdcom-0ubuntu6 (both from raring) makes the chip work again. UPDATE: Up to kernel 3.13.0-23 a patched working package of bcmwl-kernel-source 6.20.155.1+bdcom-0ubuntu6 here: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1387221/+attachment/4249077/+files/bcmwl-kernel-source_6.20.155.1%2Bbdcom-0ubuntu6_amd64.deb Currently there is no way to have utopic or vivid with an up to date kernel and properly working BCM4331 chip at the same time. Looking at the changelog its most likely caused by the update to the new upstream release in version 6.30.223.30+bdcom. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: bcmwl-kernel-source 6.20.155.1+bdcom-0ubuntu6 ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4 Uname: Linux 3.16.0-23-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Wed Oct 29 15:26:09 2014 InstallationDate: Installed on 2012-11-10 (717 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64+mac (20120926) SourcePackage: bcmwl UpgradeStatus: Upgraded to utopic on 2013-10-22 (372 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1387221/+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
