kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.0 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/v4.1-rc2-vivid/

** Package changed: linux-firmware (Ubuntu) => linux (Ubuntu)

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

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https://bugs.launchpad.net/bugs/1450856

Title:
  Wifi stops working with "bandwidth change" (Intel Centrino Wireless-N
  1030 [Rainbow Peak])

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a Dell XPS 15 L502X with Intel Centrino Wireless-N 1030 [Rainbow Peak] running Ubuntu 14.04 (fresh install). Wifi stops working intermittently during active usage and *always* after screen off. Syslog shows this message just before it happens: 
  kernel: [ 4832.867113] wlan0: AP XX:XX:XX:XX:XX:XX changed bandwidth, new config is 2412 MHz, width 1 (2412/0 MHz)

  This happens regularly. I have tried some tweaks suggested to users facing wifi problems in Ubuntu 14.04. My iwlwifi.conf is this:
  # /etc/modprobe.d/iwlwifi.conf
  options iwlwifi bt_coex_active=0 swcrypto=1 11n_disable=8

  This does not solve the issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-firmware 1.127.11
  ProcVersionSignature: Ubuntu 3.16.0-36.48~14.04.1-generic 3.16.7-ckt9
  Uname: Linux 3.16.0-36-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri May  1 22:09:35 2015
  Dependencies:
   
  InstallationDate: Installed on 2015-04-12 (19 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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