I can't reproduce the bug because I don't have that router anymore. So I
mark this report as invalid.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1405437
Title:
[Dell Precision M4800] iwlwifi regularly loses connection on Intel
7260
Status in linux package in Ubuntu:
Invalid
Bug description:
When connecting to my Speedport W 723V Typ A router, every 10 minutes my WiFi
disconnects and a line like this appears in syslog:
Dec 24 11:31:31 work kernel: [ 2721.017478] wlan0: deauthenticated from
10:c6:1f:2c:49:56 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
...
Dec 24 11:31:46 work NetworkManager[902]: <info> (wlan0): device state
change: activated -> failed (reason 'SSID not found') [100 120 53]
The network disappears from the list and only becomes visible after I
disable and re-enable networking via the network applet.
I don't remember seeing this problem at work where they use Cisco
routers.
My environment:
+ Encryption WPA2 or none.
+ Channels 1, 3, 4, 6, 8, or 11.
+ 3-4 meters away from the access point.
+ 802.11n
+ 17 other WiFi access points broadcasting.
03:00.0 Network controller [0280]: Intel Corporation Wireless 7260
[8086:08b1] (rev 73)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4470]
WORKAROUND: /etc/modprobe.d/iwlwifi.conf :
options iwlwifi 11n_disable=1
Drops did not cause loss of my network, and reconnects happened mostly
in the same second. However at some moments there were just too many
drops.
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 2520 F.... pulseaudio
/dev/snd/controlC0: treguben 2520 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Dec 24 15:06:25 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: 12/03/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
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.:bvrA11:bd12/03/2014: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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