[Bug 1310904] [NEW] Wifi (wlan) slow and unstable when updated to 14.04

[Henrique Gogó]

Public bug reported:

Since I updated ubuntu to 14.04 version, my wifi is unstable and slow. I
did wifi tests and sometimes the connection stabilze but in some minutes
(sometimes 30minutes, or 8minutes, or more, or less) the wifi network
disconnects. I need to turn the wireless adapter off and on again to
reconnect.

When I tested my wifi speed (in some websites that measure this), I see
that the download proccess is very unstable. Sometimes go to the maximum
speed and after stops, and go slow, and go fast... very unstable!

I dont know if this is a network problem or kernel problem, but I can
confirm that this just happens on new ubuntu version (14.04) - I have
other notebook with other distro and works fine, and my Android device
has a stable wifi connection.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Apr 22 01:14:46 2014
InstallationDate: Installed on 2013-10-31 (173 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to trusty on 2014-04-19 (2 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade trusty

** Description changed:

- Since I updated ubuntu to 14.04 version, my wifi turn unstable and slow.
- I did wifi tests and sometimes the connection stabilze but in some
- minutes (sometimes 30minutes, or 8minutes, or more, or less) the wifi
- network disconnects. I need to turn the wireless adapter off and on
- again to reconnect.
+ Since I updated ubuntu to 14.04 version, my wifi is unstable and slow. I
+ did wifi tests and sometimes the connection stabilze but in some minutes
+ (sometimes 30minutes, or 8minutes, or more, or less) the wifi network
+ disconnects. I need to turn the wireless adapter off and on again to
+ reconnect.
  
- When I tested my wifi speed (in some websites that mearsure this), I see
+ When I tested my wifi speed (in some websites that measure this), I see
  that the download proccess is very unstable. Sometimes go to the maximum
  speed and after stops, and go slow, and go fast... very unstable!
  
  I dont know if this is a network problem or kernel problem, but I can
  confirm that this just happens on new ubuntu version (14.04) - I have
  other notebook with other distro and works fine, and my Android device
  has a stable wifi connection.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.2
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Tue Apr 22 01:14:46 2014
  InstallationDate: Installed on 2013-10-31 (173 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: Upgraded to trusty on 2014-04-19 (2 days ago)
  VarLogDistupgradeTermlog:

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1310904

Title:
  Wifi (wlan) slow and unstable when updated to 14.04

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  Since I updated ubuntu to 14.04 version, my wifi is unstable and slow.
  I did wifi tests and sometimes the connection stabilze but in some
  minutes (sometimes 30minutes, or 8minutes, or more, or less) the wifi
  network disconnects. I need to turn the wireless adapter off and on
  again to reconnect.

  When I tested my wifi speed (in some websites that measure this), I
  see that the download proccess is very unstable. Sometimes go to the
  maximum speed and after stops, and go slow, and go fast... very
  unstable!

  I dont know if this is a network problem or kernel problem, but I can
  confirm that this just happens on new ubuntu version (14.04) - I have
  other notebook with other distro and works fine, and my Android device
  has a stable wifi connection.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.2
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Tue Apr 22 01:14:46 2014
  InstallationDate: Installed on 2013-10-31 (173 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: Upgraded to trusty on 2014-04-19 (2 days ago)
  VarLogDistupgradeTermlog:

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