| 2012-10-22 11:54:38 |
Jussi Pakkanen |
bug |
|
|
added bug |
| 2012-10-22 12:00:11 |
Brad Figg |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2012-10-22 18:19:41 |
Joseph Salisbury |
linux (Ubuntu): importance |
Undecided |
Medium |
|
| 2012-10-22 18:20:00 |
Joseph Salisbury |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2012-10-22 18:20:12 |
Joseph Salisbury |
tags |
amd64 apport-bug quantal running-unity |
amd64 apport-bug needs-upstream-testing quantal running-unity |
|
| 2012-10-23 07:34:57 |
Jussi Pakkanen |
tags |
amd64 apport-bug needs-upstream-testing quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream quantal running-unity |
|
| 2012-10-23 07:35:07 |
Jussi Pakkanen |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2012-10-24 05:33:02 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2-raring quantal running-unity |
|
| 2012-10-24 05:41:54 |
penalvch |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2012-10-24 05:42:18 |
penalvch |
summary |
Slow transfer speeds with BCM 4331 |
14e4:4331 Slow transfer speeds with BCM 4331 |
|
| 2012-10-24 08:27:25 |
Jussi Pakkanen |
description |
The BCM 4331 wireless chip has slow transfer speeds compared to OSX.
I tested by transferring a big file over the wireless between this machine and a server that is connected to the wireless router by a wired connection using scp. The transfer speeds are:
OSX upload: 7 MB/s
OSX download: 8.5 MB/s
Linux upload: 800 kB/s
Linux download: 1.9 MB/s
Uploading on Linux is 10 times slower than uploading on OSX. CPU load is ~14% when downloading in Linux.
The only similar symptom I found by web searching is this: http://ubuntuforums.org/showthread.php?t=1964768&page=2
The workaround given on that page do not work for me.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-17-generic 3.5.0-17.28
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jpakkane 2017 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Mon Oct 22 14:45:46 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64+mac (20120220)
MachineType: Apple Inc. MacBookPro8,1
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=725f2433-59c8-46cc-9c13-ad2e4ad1548d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-17-generic N/A
linux-backports-modules-3.5.0-17-generic N/A
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-08-06 (77 days ago)
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B27.1201241646
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245B3640C91C81
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245B3640C91C81
dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,1:pvr1.0:rvnAppleInc.:rnMac-94245B3640C91C81:rvrMacBookPro8,1:cvnAppleInc.:ct10:cvrMac-94245B3640C91C81:
dmi.product.name: MacBookPro8,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc. |
The BCM 4331 wireless chip has slow transfer speeds compared to OSX.
I tested by transferring a big file over the wireless between this machine and a server that is connected to the wireless router by a wired connection using scp. The transfer speeds are:
OSX upload: 7 MB/s
OSX download: 8.5 MB/s
Linux upload: 800 kB/s
Linux download: 1.9 MB/s
Uploading on Linux is 10 times slower than uploading on OSX. CPU load is ~14% when downloading in Linux.
The distance between the AP and the laptop was ~5 meters with direct line of sight between the two. The security used is WPA2.
The only similar symptom I found by web searching is this: http://ubuntuforums.org/showthread.php?t=1964768&page=2
The workaround given on that page do not work for me.
This is not a regression. The driver for this chipset was added in Precise and that had the same problem.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-17-generic 3.5.0-17.28
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jpakkane 2017 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Mon Oct 22 14:45:46 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64+mac (20120220)
MachineType: Apple Inc. MacBookPro8,1
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=725f2433-59c8-46cc-9c13-ad2e4ad1548d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-17-generic N/A
linux-backports-modules-3.5.0-17-generic N/A
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-08-06 (77 days ago)
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B27.1201241646
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245B3640C91C81
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245B3640C91C81
dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,1:pvr1.0:rvnAppleInc.:rnMac-94245B3640C91C81:rvrMacBookPro8,1:cvnAppleInc.:ct10:cvrMac-94245B3640C91C81:
dmi.product.name: MacBookPro8,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc. |
|
| 2012-11-01 14:43:36 |
Jussi Pakkanen |
bug |
|
|
added subscriber Seth Forshee |
| 2012-11-08 14:01:38 |
Jussi Pakkanen |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2012-11-08 14:13:15 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2-raring quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 quantal running-unity |
|
| 2012-11-08 14:13:58 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 precise quantal running-unity |
|
| 2012-11-08 14:14:40 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 precise quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi precise quantal running-unity |
|
| 2012-11-08 17:04:59 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi precise quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi needs-upstream-testing precise quantal running-unity |
|
| 2013-01-14 06:10:49 |
Alex Felder |
bug |
|
|
added subscriber Alex Felder |
| 2013-08-11 22:08:55 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi needs-upstream-testing precise quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi needs-upstream-testing precise quantal running-unity |
|
| 2014-01-01 10:13:27 |
penalvch |
tags |
amd64 apport-bug kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi needs-upstream-testing precise quantal running-unity |
amd64 apport-bug kernel-bug-exists-upstream-v3.7-rc2 kernel-wifi latest-bios-b27 needs-upstream-testing precise quantal running-unity |
|
| 2014-01-03 20:40:35 |
penalvch |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2014-03-05 04:19:00 |
Launchpad Janitor |
linux (Ubuntu): status |
Incomplete |
Expired |
|
| 2015-04-14 01:32:02 |
Jose C. Massón |
bug |
|
|
added subscriber Jose |
