kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Michael Zanetti, you may want to just call them to see if they have an
internal case system you may get a tracking number for.

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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 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)

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