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[Bug 1325145] Re: Intel Advanced Centrino N 6235, Slow WIFI since 14.04

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Wed, 04 Jun 2014 15:00:49 -0000
Reply-to: Bug 1325145 <1325145@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.15 kernel[0].

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'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.


[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc8-utopic/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1325145

Title:
  Intel Advanced Centrino N 6235, Slow WIFI since 14.04

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Using Kubuntu 14.04 LTS here, upgraded from 13.10.

  Whenever I use the standard Kernel linux-image-3.13.0-27-generic thats
  from 14.04 I cannot get my WIFI to go faster than ~25mbit/sec download
  and about 10mbit/sec upload.

  However, once I boot back to linux-image-3.11.0-19-generic, my speeds
  go back to about 90-100mbit/sec download and 100mbit/sec upload too.

  This problem also exists within the kernel ppa .deb kernel: linux-image-3.14.4-031404-generic
  --- 
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ralph      3539 F.... pulseaudio
                        ralph      4042 F.... pulseaudio
   /dev/snd/pcmC0D0p:   ralph      3539 F...m pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=f0e26786-8326-45ff-b1d1-c80e08c9275c
  MachineType: ASUSTeK COMPUTER INC. UX51VZA
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-19-generic root=UUID=5276469b-8bc6-43a3-8626-b71b503f0584 ro
  ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-19-generic N/A
   linux-backports-modules-3.11.0-19-generic  N/A
   linux-firmware                             1.127.2
  Tags:  trusty
  Uname: Linux 3.11.0-19-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-05-03 (29 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 09/13/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX51VZA.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX51VZA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX51VZA.203:bd09/13/2012:svnASUSTeKCOMPUTERINC.:pnUX51VZA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX51VZA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX51VZA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ralph      3533 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=f0e26786-8326-45ff-b1d1-c80e08c9275c
  MachineType: ASUSTeK COMPUTER INC. UX51VZA
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=5276469b-8bc6-43a3-8626-b71b503f0584 ro
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  Tags:  trusty
  Uname: Linux 3.13.0-27-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-05-03 (29 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 09/13/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX51VZA.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX51VZA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX51VZA.203:bd09/13/2012:svnASUSTeKCOMPUTERINC.:pnUX51VZA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX51VZA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX51VZA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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