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Message #97050
[Bug 1405298] Re: [Dell M4800]: iwlwifi regularly loses connection on Intel 7260
I can also add that in the Connection Information dialog I see the speed
frequently dropping to 1 or 5 Mb/s from 48 or 54
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https://bugs.launchpad.net/bugs/1405298
Title:
[Dell M4800]: iwlwifi regularly loses connection on Intel 7260
Status in linux package in Ubuntu:
Confirmed
Bug description:
My problem seems to be different from #1315221 because it exists in
3.16.0-28-generic (Ubuntu 14.10)
About every 10 minutes my WiFi disconnects and a line like this appears in syslog:
Dec 23 21:58:36 work kernel: [ 1762.008441] wlan0: deauthenticated from 10:c6:1f:2c:49:56 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
Workarounds like 11n_disable=1 and `sudo modprobe -r iwlwifi; sudo
modprobe iwlwifi` don't seem to help.
What helps is disabling network and enabling it again.
Another detail is that I don't remember seeing this problem at work
where they use Cisco routers. I see the problem at home with my
Speedport 723V Typ A router (a+b+n mode, WPA2).
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-28-generic 3.16.0-28.38
ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: treguben 2595 F.... pulseaudio
/dev/snd/controlC0: treguben 2595 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Dec 23 23:41:38 2014
HibernationDevice: RESUME=UUID=82445dd2-3bcf-42f7-ae59-4fba694e25de
InstallationDate: Installed on 2014-12-11 (12 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: Dell Inc. Precision M4800
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic.efi.signed root=UUID=9a116abe-59b9-48b8-abe4-5064a191ac51 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-28-generic N/A
linux-backports-modules-3.16.0-28-generic N/A
linux-firmware 1.138
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/02/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0T3YTY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd05/02/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0T3YTY:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Precision M4800
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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References