14e4:432b Ubuntu 10.10 - Wireless packet loss using Broadcom STA driver on Macbook Pro 5,2

Reported by Mitch Lin on 2010-11-02
This bug affects 6 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

I recently installed Ubuntu 10.10 (alt install) as a second partition on my Macbook Pro (5,2). After installation, I went to System->Adminstration->Additional Drivers and activated my NVIDIA accelerated graphics driver (version current) as well as the Broadcom STA wireless driver.

Rebooted, both worked, but I noticed that my connection was intermittent at best. Web pages were timing out, SSH sessions were spotty, and updating Ubuntu (the download portion) took over an hour ( ~ 100 packages).

I pinged google for a while:

--- google.com ping statistics ---
216 packets transmitted, 173 received, 19% packet loss, time 240438ms
rtt min/avg/max/mdev = 20.316/68.300/205.230/49.727 ms

Here's yahoo:

--- yahoo.com ping statistics ---
246 packets transmitted, 224 received, 8% packet loss, time 385430ms
rtt min/avg/max/mdev = 33.256/59.871/334.379/48.785 ms

All other wireless devices do not have this issue, and when I boot into OSX, the wireless card works perfectly (transfer speeds are useful/reliable with no packet loss).

Let me know if you need more information.

AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
 /dev/snd/controlC0: paku 1847 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
 Card hw:0 'NVidia'/'HDA NVidia at 0xdf480000 irq 21'
   Mixer name : 'Realtek ALC889A'
   Components : 'HDA:10ec0885,106b4600,00100103'
   Controls : 36
   Simple ctrls : 20
DistroRelease: Ubuntu 10.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=4c27303f-0e48-4756-8b18-71b792823a58
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Apple Inc. MacBookPro5,2
NonfreeKernelModules: nvidia wl
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=7e713b3d-9e70-460a-9e2a-59dde79f2ab3 ro quiet splash
 PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic
Regression: No
RelatedPackageVersions: linux-firmware 1.38
Reproducible: Yes
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
Tags: maverick kernel-net needs-upstream-testing
Uname: Linux 2.6.35-22-generic i686

dmi.bios.date: 05/04/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP52.88Z.008E.B05.0905042202
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-F2268EC8
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 8
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2268EC8
dmi.modalias: dmi:bvnAppleInc.:bvrMBP52.88Z.008E.B05.0905042202:bd05/04/09:svnAppleInc.:pnMacBookPro5,2:pvr1.0:rvnAppleInc.:rnMac-F2268EC8:rvr:cvnAppleInc.:ct8:cvrMac-F2268EC8:
dmi.product.name: MacBookPro5,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

Fabio Marconi (fabiomarconi) wrote :

Hello Paku
can you please run in a terminal
apport collect -p linux

affects: ubuntu → linux (Ubuntu)
tags: added: maverick
Changed in linux (Ubuntu):
status: New → Incomplete

apport information

tags: added: apport-collected
description: updated

apport information

apport information

apport information

apport information

apport information

apport information

apport information

apport information

apport information

Hello paku
Thanks for the support

Changed in linux (Ubuntu):
status: Incomplete → New
status: New → Confirmed
Mitch Lin (mitchthelin) wrote :

Is there anything else I can provide that would help debug this issue?

Gursimran singh (simar) on 2010-11-14
Changed in linux (Ubuntu):
importance: Undecided → Low
Mitch Lin (mitchthelin) wrote :

Another note:

When the machine is suspended, or if I unplug the laptop while the screen is locked, eight times out of ten I will have to reboot to get the wireless card to connect to my network.

Mitch Lin, thank you for reporting this and helping make Ubuntu better. Maverick reached EOL on April 10, 2012.
Please see this document for currently supported Ubuntu releases:

We were wondering if this is still an issue in a supported release? If so, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command in a supported release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please do not test the kernel in the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. As well, please comment on which kernel version specifically you tested.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream', and comment as to why specifically you were unable to test it.

Please let us know your results. Thanks in advance.

Helpful Bug Reporting Links:

summary: - Ubuntu 10.10 - Wireless packet loss using Broadcom STA driver on Macbook
- Pro 5,2
+ 14e4:432b Ubuntu 10.10 - Wireless packet loss using Broadcom STA driver
+ on Macbook Pro 5,2
Changed in linux (Ubuntu):
status: Confirmed → Incomplete
tags: added: kernel-wifi needs-upstream-testing
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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