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[Bug 1046507] Re: 14e4:4353 [MacBookAir4, 2] brcmsmac produces lots of warnings and reduced network bandwidth

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Tue, 31 Dec 2013 23:40:56 -0000
Reply-to: Bug 1046507 <1046507@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Summary changed:

- brcmsmac produces lots of warnings and reduced network bandwidth on macbook air
+ 14e4:4353 [MacBookAir4,2] brcmsmac produces lots of warnings and reduced network bandwidth

** Tags added: latest-bios-bof

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Title:
  14e4:4353 [MacBookAir4,2] brcmsmac produces lots of warnings and
  reduced network bandwidth

Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  I'm running the latest Quantal kernel. To reproduce:

  1. On the MacBook air run "iperf -s"
  2. On another system run "iperf -c bradf-air -t 2000 -P  -i 2"
  3. tail -f /var/log/syslog on the macbook

  You will see lots of:

  ieee80211 phy0: brcms_c_prec_enq_head: No where to go, prec == 4
  ieee80211 phy0: wl0: sendampdu: prep_xdu retry; seq 0x0
  ieee80211 phy0: brcms_c_sendampdu: No fifo space  !!
  --- 
  AcpiTables: Error: command ['pkexec', '/usr/share/apport/dump_acpi_tables.py'] failed with exit code 127: Error executing /usr/share/apport/dump_acpi_tables.py: Permission denied
  ApportVersion: 2.5.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bradf      2491 F.... pulseaudio
  DistroRelease: Ubuntu 12.10
  HibernationDevice: RESUME=UUID=05b0510f-b73a-410d-b566-f0bb2f06655f
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120622)
  MachineType: Apple Inc. MacBookAir4,2
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=779f7654-77e9-4631-b24d-69866d79dd4d ro crashkernel=384M-2G:64M,2G-:128M quiet splash i915.i915_enable_rc6=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.5.0-13.14~lp000000v201209051242-generic 3.5.3
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-13-generic N/A
   linux-backports-modules-3.5.0-13-generic  N/A
   linux-firmware                            1.91
  Tags:  quantal running-unity
  Uname: Linux 3.5.0-13-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 01/24/2012
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA41.88Z.0077.B0F.1201241549
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-742912EFDBEE19B3
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir4,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-742912EFDBEE19B3
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA41.88Z.0077.B0F.1201241549:bd01/24/2012:svnAppleInc.:pnMacBookAir4,2:pvr1.0:rvnAppleInc.:rnMac-742912EFDBEE19B3:rvrMacBookAir4,2:cvnAppleInc.:ct10:cvrMac-742912EFDBEE19B3:
  dmi.product.name: MacBookAir4,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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