14e4:4331 [MacBookPro10,1] bcmwl-kernel-source >= 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz networks and is unstable on 2.5GHz
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
bcmwl (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
1) Utopic Unicorn 14.10
2) mzanetti@noneyet ~ $ apt-cache policy bcmwl-kernel-source
bcmwl-kernel-
Installed: 6.30.223.
Candidate: 6.30.223.
Version table:
*** 6.30.223.
500 http://
100 /var/lib/
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]
Kernel driver in use: wl
sudo dmidecode -s bios-version
MBP101.
sudo dmidecode -s bios-release-date
08/08/2012
sudo dmidecode -s system-version
1.0
sudo dmidecode -s baseboard-
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.
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.
Downgrading the machine to kernel 3.8.x and bcmwl-kernel-source 6.20.155.
UPDATE: Up to kernel 3.13.0-23 a patched working package of bcmwl-kernel-source 6.20.155.
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.
ProcVersionSign
Uname: Linux 3.16.0-23-generic x86_64
NonfreeKernelMo
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)
description: | updated |
Changed in bcmwl (Ubuntu): | |
status: | Incomplete → Confirmed |
tags: | added: regression-release saucy |
description: | updated |
description: | updated |
summary: |
- bcmwl-kernel-source >= 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz - networks and is unstable on 2.5GHz + 14e4:4331 [MacBookPro10,1] bcmwl-kernel-source >= + 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz networks and is unstable on + 2.5GHz |
description: | updated |
tags: | added: vivid |
Michael Zanetti, thank you for reporting this and helping make Ubuntu better.
1) Could you please execute the following in a terminal and post the results to this report: manufacturer
lspci -vvnn | grep -A 9 Network
apt-cache policy bcmwl-kernel-source
sudo dmidecode -s bios-version
sudo dmidecode -s bios-release-date
sudo dmidecode -s system-version
sudo dmidecode -s baseboard-
2) Regarding your Bug Description: 1+bdcom- 0ubuntu6 can be found in the comments of this bug report: https:/ /bugs.launchpad .net/ubuntu/ +source/ bcmwl/+ bug/1189611 ..."
>"UPDATE: Up to kernel 3.13.0-23 a patched working package of bcmwl-kernel-source 6.20.155.
Please do not make people dumpster dive for information elsewhere that should be posted in full detail in the bug description. Hence, could you please provide a click-for-click on how to implement your WORKAROUND?
3) Does using the open source b43 driver provide a WORKAROUND as outlined in https:/ /help.ubuntu. com/community/ WifiDocs/ Driver/ bcm43xx ?