Wifi disconnects every few minutes

[Anders Hall]

Wifi disconnects every few minutes.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-30-generic 3.19.0-30.33
ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: flanders 1614 F.... pulseaudio
 /dev/snd/controlC1: flanders 1614 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Oct 7 11:37:33 2015
HibernationDevice: RESUME=UUID=68f70ce7-67ef-484a-8ce9-f6a5daaca80d
InstallationDate: Installed on 2015-07-18 (80 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20CM001TMS
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-30-generic root=/dev/mapper/ubuntu--vg-root ro persistent quiet splash
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-30-generic N/A
 linux-backports-modules-3.19.0-30-generic N/A
 linux-firmware 1.143.3
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/23/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N10ET28W (1.05 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20CM001TMS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN10ET28W(1.05):bd01/23/2015:svnLENOVO:pn20CM001TMS:pvrThinkPadX250:rvnLENOVO:rn20CM001TMS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20CM001TMS
dmi.product.version: ThinkPad X250
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Anders Hall, thank you for reporting this and helping make Ubuntu better. As per http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x250 an update to your computer's buggy and outdated BIOS is available (1.17). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status Confirmed. Otherwise, please mark this as Invalid.

Thank you for your understanding.

[Anders Hall (a.hall)]

I will try Christopher. However, I got the impression this this issue was related to many different computers. Any common factor on those computers related to this issue?

[Anders Hall (a.hall)]

dmidecode -s bios-release-date
01/23/2015

dmidecode -s bios-version
N10ET28W (1.05 )

BIOS changes since below if it helps:

********************

CHANGES IN THIS RELEASE
Version 1.17
UEFI: 1.17 / ECP: 1.13

    [Important] Security fix addresses LEN-2015-002 SMM "Incursion" Attack and some security fixes. (Note) If the UEFI BIOS has been updated to version 1.17 or higher, it is no longerable to roll back to the version before 1.17 for security improvement.

********************

CHANGES IN THIS RELEASE
  Version 1.15

[Important updates]
- Added support for Microsoft Windows 10 64bit.
- Fix an issue where system cannot boot when Execution Prevention in Security
  Memory Protection was set to disabled and saved on ThinkPad Setup with
  UEFI BIOS version 1.13.

[New functions or enhancements]
- Supported the 60Hz refresh rate of 4K (3840 x 2160) resolution monitor.
        (Note) Please reinstall Intel HD Graphics Driver to take effect.
- Updated the CPU microcode.

[Problem fixes]
  Nothing.

********************

CHANGES IN THIS RELEASE
  Version 1.12

[Important updates]
  Nothing.

[New functions or enhancements]
- Supported i3-4030U and i5-4300U CPU.
- Supported 16GB memory.

[Problem fixes]
- Fixed an issue where USB Composite Device was displayed as unspecified device
  in Devices and Priters Control Panel when Intel Network Frame Forwarder (NFF)
  was enabled.

********************

CHANGES IN THIS RELEASE
  Version 1.07

[Important updates]
- Mitigated the risk of security vulnerability related to DRAM Row Hammering.

[New functions or enhancements]
- Updated the CPU microcode.

[Problem fixes]
- Fixed an issue where the End/Insert key did not work correctly in Fn Key Lock
  state.

********************

CHANGES IN THIS RELEASE
  Version 1.06

[Important updates]
  Nothing.

[New functions or enhancements]
- Updated the CPU microcode.
- Added support for Intel Network Frame Forwarder (NFF).
  (Note)
  Intel NFF will be enabled from the UEFI BIOS version 1.06. But, it will be
  disabled when updating the UEFI BIOS to version 1.06 or higher from version
  1.05 or lower. Setup Default by the F9 key in ThinkPad Setup will enable it.
  It can be enabled or disabled in the ThinkPad Setup.

[Problem fixes]
  Nothing.

[Anders Hall (a.hall)]

Give me two days at least. I need to backup things etc in case bios update fries my PC.

[Jim Breen (jimbreen)]

I have this problem too, on my HP 15-AF014AU notebook, running 15.04.

My wifi card is a Realtek RTL8723BE, and that seems to be a common feature in the problem.

I added a /etc/modprobe.d/rtl8723be.conf file containing
"options rtl8723be fwlps=0", then restarted. That seems to have stopped the periodic
dropping out, but I still need to do the hidden-network connect when coming
out of suspend.

[penalvch (penalvch)]

Jim Breen, this report has nothing to do with your card or driver. However, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[Jim Breen (jimbreen)]

I have now submitted a bug report.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1508281

Jim

On 21 October 2015 at 13:24, Christopher M. Penalver
<email address hidden> wrote:
> Jim Breen, this report has nothing to do with your card or driver. However, it will help immensely if you filed a new report via a terminal:
> ubuntu-bug linux
>
> Please feel free to subscribe me to it.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1503627
>
> Title:
> Wifi disconnects every few minutes
>
> Status in linux package in Ubuntu:
> Incomplete
>
> Bug description:
> Wifi disconnects every few minutes.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 15.04
> Package: linux-image-3.19.0-30-generic 3.19.0-30.33
> ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6
> Uname: Linux 3.19.0-30-generic x86_64
> ApportVersion: 2.17.2-0ubuntu1.5
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: flanders 1614 F.... pulseaudio
> /dev/snd/controlC1: flanders 1614 F.... pulseaudio
> CurrentDesktop: Unity
> Date: Wed Oct 7 11:37:33 2015
> HibernationDevice: RESUME=UUID=68f70ce7-67ef-484a-8ce9-f6a5daaca80d
> InstallationDate: Installed on 2015-07-18 (80 days ago)
> InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
> MachineType: LENOVO 20CM001TMS
> ProcFB: 0 inteldrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-30-generic root=/dev/mapper/ubuntu--vg-root ro persistent quiet splash
> RelatedPackageVersions:
> linux-restricted-modules-3.19.0-30-generic N/A
> linux-backports-modules-3.19.0-30-generic N/A
> linux-firmware 1.143.3
> SourcePackage: linux
> UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 01/23/2015
> dmi.bios.vendor: LENOVO
> dmi.bios.version: N10ET28W (1.05 )
> dmi.board.asset.tag: Not Available
> dmi.board.name: 20CM001TMS
> dmi.board.vendor: LENOVO
> dmi.board.version: SDK0E50510 WIN
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: None
> dmi.modalias: dmi:bvnLENOVO:bvrN10ET28W(1.05):bd01/23/2015:svnLENOVO:pn20CM001TMS:pvrThinkPadX250:rvnLENOVO:rn20CM001TMS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
> dmi.product.name: 20CM001TMS
> dmi.product.version: ThinkPad X250
> dmi.sys.vendor: LENOVO
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1503627/+subscriptions

--
Jim Breen
Adjunct Snr Research Fellow, Japanese Studies Centre, Monash University

[Luis Alvarado (luisalvarado)]

Issue is still there in 15.10 64-bit, although it is harder to track (Takes longer to appear, it is random)

Here is some information related to it

02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

Lenovo IdeaPad Z510

In the following image: http://imgur.com/a/IOd36

When it drops, it gives the issue shown in the dmesg output. when I try to reconnect to it, the GUI error box appears (shown in the first image).

There are 2 images with a bit more information.

[Anders Hall (a.hall)]

Note: still planning to do the bios update requested. Use this computer for work first and foremost and is careful. However, if more users report this (as proven https://answers.launchpad.net/ubuntu/+question/266033) we can perhaps assume it is a more general problem and find another way to debug it? :-)

[penalvch (penalvch)]

Luis Alvarado, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]