Ubuntu
network-manager package

USB Wifi drops out every 2 minutes, needs disconnecting / reconnecting to work for a further 2 minutes

Bug #1420766 reported by Duncan on 2015-02-11

28

This bug affects 6 people

Affects		Status	Importance	Assigned to	Milestone
	network-manager (Ubuntu)	Confirmed	High	Unassigned

Bug Description

Wifi says it's connected at all times but the internet drops out and nothing connects on WLAN or the internet.

Every 2 minutes, I disconnect and reconnect to make it work again but it soon drops out again.

Recently upgraded from Ubuntu 11 where everything worked with 3rd party drivers that don't work with current version.

ALl help gratefully received.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-30-generic 3.16.0-30.40
ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic i686
ApportVersion: 2.14.7-0ubuntu8.1
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: denzil 1953 F.... pulseaudio
/dev/snd/controlC1: denzil 1953 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Feb 11 23:02:21 2015
HibernationDevice: RESUME=UUID=78e81787-eebb-4e88-9c8f-8e766633b555
InstallationDate: Installed on 2015-01-17 (24 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
MachineType: Dell Inc. OptiPlex 755
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic root=UUID=cff858b0-1018-474f-9e05-9b9c556233c5 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-30-generic N/A
linux-backports-modules-3.16.0-30-generic N/A
linux-firmware 1.138.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/11/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0DR845
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA09:bd03/11/2008:svnDellInc.:pnOptiPlex755:pvr:rvnDellInc.:rn0DR845:rvr:cvnDellInc.:ct3:cvr:
dmi.product.name: OptiPlex 755
dmi.sys.vendor: Dell Inc.

Tags:

Revision history for this message

Duncan (shieldsduncan) wrote on 2015-02-11:

#1

AlsaInfo.txt Edit (18.7 KiB, text/plain; charset="utf-8")
BootDmesg.txt Edit (72.2 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (203 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (91.9 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.7 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (478 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (12.7 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (895 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (106 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.1 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (22.7 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (134.5 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (293.5 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (266.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Brad Figg (brad-figg) wrote on 2015-02-11: Status changed to Confirmed

#2

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Alberto Salvia Novella (es20490446e) on 2015-02-11

Changed in linux (Ubuntu):
importance:	Undecided → High
affects:	linux (Ubuntu) → network-manager (Ubuntu)
Changed in network-manager (Ubuntu):
status:	Confirmed → New

Revision history for this message

Launchpad Janitor (janitor) wrote on 2015-02-13:

#3

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in network-manager (Ubuntu):
status:	New → Confirmed

Revision history for this message

Michiel (michielhaisma) wrote on 2015-11-01:

#4

I have a similar issue, where exactly every 2 minutes the bandwidth drops from ~50mbit to ~3mbit for a second or two, then goes back up. No dropped packets or anything reported. Tested with iperf. Wired connection shows no issue at all. Happens on both TCP and UDP tests.

Revision history for this message

The Powerpuff Girls (thepowerpuffgirls) wrote on 2016-04-27:

#5

I have the same or similar issue at times, at least on one computer running Ubuntu 12.04.

- Blossom

Revision history for this message

groucho (grouchomarx-fr) wrote on 2016-07-14:

#6

NetworkManager does a scan every 2 minutes.
It can lead to latency issues, lost packets or disconnections.

To disable it, you can set the BSSID in your WIFI access point profile (in the network settings).

Maybe this will fix your issue.

Revision history for this message

farid (faridfedora) wrote on 2017-03-13:

#7

i have a same problem in ubuntu 14.04..but in my case it's not exactly 2 minute...most of times when i download a huge file everything's ok but when network is idle it gets disconnected...it reminds me sth like power saving mode! i thought maybe its cause of new thechnology of my new laptop because on my older laptop i didnt have same problem.
laptop model: ASUS k550vx

Revision history for this message

Sebastian (sebastianhaselbeck) wrote on 2022-05-14:

#8

Can confirm, but haven't figured out why it occurs sometimes, and sometimes it doesn't. Definitely no indication of the problem on any UI, Wifi seems to be connected, it's just no internet coming through. Wifi on/off fixes it for just a few minutes, too. Very annoying problem, and it is due to Ubuntu 22.04, the same machine, previous Ubuntu, no problems, all other devices the network have no problems, there were no changes on the side of the router.

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