[Bug 651008] Re: Regression in wireless performance under Maverick when on battery power (broadcom)

[Jean-Baptiste Lallement]

** Tags added: maverick regression-release
** Tags removed: regression-potential

** Description changed:

  Since upgrading to maverick, wireless performance on my Macbook Pro 7.1
  has been terrible. It was fine under lucid.
  
  Pinging the router:
  
-   13 packets transmitted, 12 received, 7% packet loss, time 12024ms
-   rtt min/avg/max/mdev = 52.867/574.644/1203.660/441.552 ms, pipe 2
+   13 packets transmitted, 12 received, 7% packet loss, time 12024ms
+   rtt min/avg/max/mdev = 52.867/574.644/1203.660/441.552 ms, pipe 2
  
  iperf to another machine connected via ethernet over power (typical
  latency from this machine is ~3ms to router)
  
-   [ ID] Interval       Transfer     Bandwidth
-   [  3]  0.0-10.0 sec    136 KBytes    111 Kbits/sec
+   [ ID] Interval       Transfer     Bandwidth
+   [  3]  0.0-10.0 sec    136 KBytes    111 Kbits/sec
  
  wireless card is
  
-   02:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n
+   02:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n
  Wireless LAN Controller (rev 01)
  
  bcmwl-kernel-source version 5.60.48.36+bdcom-0ubuntu5
+ 
+ == Regression details ==
+ Discovered in version: maverick
+ Last known good version: lucid
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: linux-image-2.6.35-22-generic 2.6.35-22.33
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic x86_64
  NonfreeKernelModules: nvidia wl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of CAPTURE Hardware Devices ****
+  card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  AudioDevicesInUse:
-  USER PID ACCESS COMMAND
-  /dev/snd/controlC0:  laney      1558 F.... pulseaudio
+  USER PID ACCESS COMMAND
+  /dev/snd/controlC0:  laney      1558 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
-  Card hw:0 'NVidia'/'HDA NVidia at 0xd3480000 irq 23'
-    Mixer name	: 'Nvidia MCP89 HDMI'
-    Components	: 'HDA:10134206,106b0d00,00100301 HDA:10de000c,10de0101,00100200'
-    Controls      : 28
-    Simple ctrls  : 12
+  Card hw:0 'NVidia'/'HDA NVidia at 0xd3480000 irq 23'
+    Mixer name	: 'Nvidia MCP89 HDMI'
+    Components	: 'HDA:10134206,106b0d00,00100301 HDA:10de000c,10de0101,00100200'
+    Controls      : 28
+    Simple ctrls  : 12
  Date: Wed Sep 29 11:06:53 2010
  HibernationDevice: RESUME=UUID=1c5b3f2c-2c89-4fa1-9ed8-0e238de8fe47
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100729)
  MachineType: Apple Inc. MacBookPro7,1
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=2228fdfe-3834-40b2-b7b4-efea7463e3c1 ro quiet splash reboot=pci
  ProcEnviron:
-  PATH=(custom, user)
-  LANG=en_GB.UTF-8
-  SHELL=/usr/bin/zsh
+  PATH=(custom, user)
+  LANG=en_GB.UTF-8
+  SHELL=/usr/bin/zsh
  RelatedPackageVersions: linux-firmware 1.38
  RfKill:
-  
+ 
  SourcePackage: linux
  dmi.bios.date: 03/25/10
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP71.88Z.0039.B05.1003251322
  dmi.board.name: Mac-F222BEC8
  dmi.board.vendor: Apple Inc.
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F222BEC8
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP71.88Z.0039.B05.1003251322:bd03/25/10:svnAppleInc.:pnMacBookPro7,1:pvr1.0:rvnAppleInc.:rnMac-F222BEC8:rvr:cvnAppleInc.:ct10:cvrMac-F222BEC8:
  dmi.product.name: MacBookPro7,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

** Also affects: bcmwl (Ubuntu Maverick)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Maverick)
   Importance: Undecided
       Status: New

** Changed in: bcmwl (Ubuntu Maverick)
       Status: New => Confirmed

-- 
Regression in wireless performance under Maverick when on battery power (broadcom)
https://bugs.launchpad.net/bugs/651008
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