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[Alejandro <alevidalr@xxxxxxxxx>]

I tested several of the upstream kernels, but none of them solved the
problem. Just recently I updated all the packages and between them one
update to the kernel 3.13.0-48-generic, I think it solved the problem.
Yesterday I was connected for more than 4 hour and today for almost 6
hours without problems.

I have tracked the problem about the unstability, I'm not sure what all
the lines mean but what I can see is that the network supplier changes
continuously and Ubuntu was unable to follow these changes in some
point.

13:25:48 uos-HP-Pavilion-g6 dbus[653]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
13:25:49 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:25:49 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with a4:18:75:e0:f2:f0 failed
13:26:43 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:26:47 uos-HP-Pavilion-g6 NetworkManager[905]: <warn> nl_recvmsgs() error: (-33) Dump inconsistency detected, interrupted
13:27:18 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:27:18 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with a4:18:75:e0:f2:f0 failed
13:27:49 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:27:49 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with f8:4f:57:41:09:00 failed
13:28:16 uos-HP-Pavilion-g6 dhclient: DHCPREQUEST of 143.167.224.128 on wlan0 to 172.22.0.240 port 67 (xid=0x33f12feb)
13:28:16 uos-HP-Pavilion-g6 dhclient: DHCPACK of 143.167.224.128 from 172.22.0.240
13:28:16 uos-HP-Pavilion-g6 dhclient: bound to 143.167.224.128 -- renewal in 115 seconds.
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): DHCPv4 state changed renew -> renew
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   address 143.167.224.128
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   prefix 22 (255.255.252.0)
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   gateway 143.167.224.254
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   nameserver '143.167.2.110'
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   nameserver '143.167.1.110'
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   domain name 'shef.ac.uk'
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   wins '143.167.2.157'
13:28:16 uos-HP-Pavilion-g6 NetworkManager[905]: <info>   wins '143.167.1.157'
13:28:16 uos-HP-Pavilion-g6 dbus[653]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
13:28:16 uos-HP-Pavilion-g6 dbus[653]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
13:28:20 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:28:20 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with 40:f4:ec:1a:87:d0 failed
13:28:43 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:28:51 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:28:51 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with ec:e1:a9:35:e4:60 failed
13:29:22 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: failed to get master session key from pre-auth EAPOL state machines
13:29:22 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: RSN: pre-authentication with f8:4f:57:41:09:00 failed
13:29:27 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-DISCONNECTED bssid=ec:e1:a9:35:62:60 reason=4 locally_generated=1
13:29:27 uos-HP-Pavilion-g6 NetworkManager[905]: <warn> Connection disconnected (reason -4)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.962458] cfg80211: Calling CRDA to update world regulatory domain
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965045] cfg80211: World regulatory domain updated:
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965049] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965051] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965053] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965054] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965056] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
13:29:27 uos-HP-Pavilion-g6 kernel: [ 6140.965057] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
13:29:27 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: completed -> disconnected
13:29:27 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:29:27 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: disconnected -> scanning
13:29:32 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:29:33 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: SME: Trying to authenticate with d0:72:dc:82:42:e0 (SSID='eduroam' freq=2462 MHz)
13:29:33 uos-HP-Pavilion-g6 kernel: [ 6147.135524] wlan0: authenticate with d0:72:dc:82:42:e0
13:29:33 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: scanning -> authenticating
13:29:33 uos-HP-Pavilion-g6 kernel: [ 6147.155395] wlan0: direct probe to d0:72:dc:82:42:e0 (try 1/3)
13:29:33 uos-HP-Pavilion-g6 kernel: [ 6147.358829] wlan0: direct probe to d0:72:dc:82:42:e0 (try 2/3)
13:29:34 uos-HP-Pavilion-g6 kernel: [ 6147.562681] wlan0: direct probe to d0:72:dc:82:42:e0 (try 3/3)
13:29:34 uos-HP-Pavilion-g6 kernel: [ 6147.766537] wlan0: authentication with d0:72:dc:82:42:e0 timed out
13:29:34 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
13:29:35 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:29:35 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: disconnected -> scanning
13:29:40 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SCAN-STARTED 
13:29:41 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: SME: Trying to authenticate with 40:f4:ec:1a:87:d0 (SSID='eduroam' freq=2437 MHz)
13:29:41 uos-HP-Pavilion-g6 kernel: [ 6154.903725] wlan0: authenticate with 40:f4:ec:1a:87:d0
13:29:41 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: scanning -> authenticating
13:29:41 uos-HP-Pavilion-g6 kernel: [ 6154.919215] wlan0: direct probe to 40:f4:ec:1a:87:d0 (try 1/3)
13:29:41 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): roamed from BSSID EC:E1:A9:35:62:60 (eduroam) to (none) ((none))
13:29:41 uos-HP-Pavilion-g6 kernel: [ 6155.122798] wlan0: direct probe to 40:f4:ec:1a:87:d0 (try 2/3)
13:29:41 uos-HP-Pavilion-g6 kernel: [ 6155.326663] wlan0: direct probe to 40:f4:ec:1a:87:d0 (try 3/3)
13:29:42 uos-HP-Pavilion-g6 kernel: [ 6155.530578] wlan0: authentication with 40:f4:ec:1a:87:d0 timed out
13:29:42 uos-HP-Pavilion-g6 wpa_supplicant[929]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="eduroam" auth_failures=1 duration=10
13:29:42 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
13:29:42 uos-HP-Pavilion-g6 NetworkManager[905]: <warn> (wlan0): link timed out.
13:29:42 uos-HP-Pavilion-g6 NetworkManager[905]: <info> (wlan0): device state change: activated -> failed (reason 'SSID not found') [100 120 53]
13:29:42 uos-HP-Pavilion-g6 NetworkManager[905]: <info> NetworkManager state is now DISCONNECTED
13:29:42 uos-HP-Pavilion-g6 NetworkManager[905]: <warn> Activation (wlan0) failed for connection 'eduroam'

Now is fine, I can see that everytime that the adapter changes Ubuntu
succesfully renew the conection.

Thank you for all the help.

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

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https://bugs.launchpad.net/bugs/1431924

Title:
  Ubuntu 14.04 in a HP Pavilion g6 with wireless Ralink RT5390
  disconnects

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The problem is that after several minutes of been connected by
  wireless it suddenly just disconnects appearing the meesage:

  <Now you are offline>

  By restarting the adapter, the computer or the network settings
  (several times) the connection is reestablished, sometimes.

  I have tried different drivers and updates for this card but the
  problem persists since I installed Ubuntu 5 months ago. Further
  information about the computer and the connection

  Version log output: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15

  $ lsb_release -rd
  Description:	Ubuntu 14.04.2 LTS
  Release:	14.04

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-46-generic 3.13.0-46.79
  ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  uos        1830 F.... pulseaudio
  Date: Fri Mar 13 14:57:00 2015
  HibernationDevice: RESUME=UUID=1970778c-e807-44a2-88d6-c7ca3ab1752c
  InstallationDate: Installed on 2014-09-16 (177 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Hewlett-Packard HP Pavilion g6 Notebook PC
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=6a5271b5-933c-4c43-8dec-deb4dfa9e54c ro quiet splash intel_pstate=enable vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-46-generic N/A
   linux-backports-modules-3.13.0-46-generic  N/A
   linux-firmware                             1.127.11
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/04/2011
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.14
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 166F
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 09.24
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.14:bd05/04/2011:svnHewlett-Packard:pnHPPaviliong6NotebookPC:pvr0593110000204610000620100:rvnHewlett-Packard:rn166F:rvr09.24:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion g6 Notebook PC
  dmi.product.version: 0593110000204610000620100
  dmi.sys.vendor: Hewlett-Packard

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