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[Viktor Pal <1420935@xxxxxxxxxxxxxxxxxx>]

Just to follow up on this.
I upgraded a few weeks before to Ubuntu 15.10 and it looks like this bug is completely fixed.

It has the following kernel:
Linux 4.2.0-18-generic #22-Ubuntu SMP Fri Nov 6 18:25:50 UTC 2015 x86_64 GNU/Linux

Wifi works stable without any additional tweaks.

Happy that this was fixed, thanks.

** Changed in: linux-firmware (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1420935

Title:
  Centrino Wireless-N 1030 randomly disconnecting

Status in linux-firmware package in Ubuntu:
  Fix Released

Bug description:
  1) The release of Ubuntu you are using:
  Description:	Linux Mint 17.1 Rebecca
  Release:	17.1

  Ubuntu version:
  Ubuntu 14.04

  2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
  Maybe linux-image, linux-firmware or network-manager.

  3) What you expected to happen
  Permanent wifi connection.

  4) What happened instead
  Wireless is disconnecting randomly.

  This wifi card was working for me with Ubuntu 12.04 for several years before flawlessly.
  Now I installed Linux Mint based on Ubuntu 14.04 and it is now randomly disconnecting.
  When it disconnects I disable wireless in the NM applet and enable it again and wifi reconnects.
  Logs regarding the disconnect and the reconnect are attached to the report.

  The disconnect happens 10 to 60 minutes  after it was connected or
  reconnected.

  The laptop I'm using is a  Dell Inspiron N5110 which is officially supported by Ubuntu:
  http://www.ubuntu.com/certification/hardware/201012-6932/

  It seems that I'm not the only one with this issue:
  http://forums.linuxmint.com/viewtopic.php?f=53&t=169633
  http://ubuntuforums.org/showthread.php?t=2220377
  http://ubuntuforums.org/showthread.php?t=2219014
  http://forum.ubuntu-fr.org/viewtopic.php?id=1550761
  http://askubuntu.com/questions/453156/wifi-connection-periodically-dropping-in-centrino-wireless-n-1030
  http://askubuntu.com/questions/363126/slow-wifi-after-with-centrino-wireless-n-1030-rainbow-peak

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-firmware 1.127.11
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  Date: Wed Feb 11 20:14:39 2015
  Dependencies:

  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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