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Message #93356
[Bug 1396338] Re: [Dell Latitude E7440] Wifi keeps dropping with Intel Wireless 7260
I have set up the git tree and successfully compiled and installed a few
vanilla kernels. However, it seems that even the vanilla 3.16 also works
- no dropouts in the last few evenings, where the Ubuntu 3.16.0.25 drops
several times per hour.
I have tried to find the correspondence between the vanilla and Ubuntu
kernels, but it seems that this list
http://people.canonical.com/~kernel/info/kernel-version-map.html is not
completely up to date. The 3.16 series is not shown.
I will keep testing, but I would appreciate to start the (quite time
consuming) commit bisect from a known bad kernel. Could you point me to
the correct starting point, please?
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https://bugs.launchpad.net/bugs/1396338
Title:
[Dell Latitude E7440] Wifi keeps dropping with Intel Wireless 7260
Status in linux package in Ubuntu:
Incomplete
Bug description:
After the connection is dropped, a hardware switch disconnect/connect is necessary to re-establish connection, the connection does not automatically reappear. The problematic line in the dmesg output is:
wlan0: deauthenticated from 00:16:b6:01:69:74 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
The frequency of the problem drops considerably moving to a less congested channel, but it still happens - I am stationary at about 3 meters from the access point. Other devices (Android phones, iPad, other laptops) are connecting to the same access point with no problems at all.
Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 73)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4470]
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-24-generic 3.16.0-24.32
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: niels 2502 F.... pulseaudio
/dev/snd/controlC1: niels 2502 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Nov 25 21:24:21 2014
HibernationDevice: RESUME=UUID=fe0b3838-4f25-4296-a7c7-872862359ccf
InstallationDate: Installed on 2014-10-16 (40 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Latitude E7440
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=28b33773-57cd-4cb6-bd65-1c2acadbd079 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-24-generic N/A
linux-backports-modules-3.16.0-24-generic N/A
linux-firmware 1.138
SourcePackage: linux
UpgradeStatus: Upgraded to utopic on 2014-10-25 (31 days ago)
dmi.bios.date: 06/26/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 03HFCG
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd06/26/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn03HFCG:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7440
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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