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Message #100656
[Bug 1397032] Re: [Lenovo ThinkPad T540p] Intel Wireless Dual Band 7260AC fails to connect
Dear Christopher,
what have I to add?
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https://bugs.launchpad.net/bugs/1397032
Title:
[Lenovo ThinkPad T540p] Intel Wireless Dual Band 7260AC fails to
connect
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have a Lenovo Thinkpad T540p and the wireless connection isn't
working correctly. It will list the available networks but when trying
to connect it will keep asking for the password or when it connects
the connection will last only few seconds and the packet loss on a
ping will be very high.
I've followed bug https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1354975 in order to find a solution but without luck. I've tried to turn off power management, install latest kernel ( linux-image-3.17.0-031700-generic ) and related updated firmware according to http://wireless.kernel.org/en/users/Drivers/iwlwifi . Tried also the updated firmware for the older kernel and with the older kernel.
I've tried also Ubuntu 14.10 with same results. I've tried to move closer to the router but with no change at all.
Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 83)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:c270]
sudo lshw -C network
network
description: Wireless interface
product: Wireless 7260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 83
serial: e8:b1:fc:d2:e3:9e
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-40-generic firmware=22.24.8.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
resources: irq:47 memory:e1400000-e1401fff
WORKAROUND: Disable 802.11n on the router.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-40-generic 3.13.0-40.69
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: fsassi 1930 F.... pulseaudio
/dev/snd/controlC1: fsassi 1930 F.... pulseaudio
Date: Thu Nov 27 16:13:07 2014
HibernationDevice: RESUME=UUID=650269f1-902f-4143-8cd4-27d1631b5d05
InstallationDate: Installed on 2014-11-26 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20BECTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-40-generic.efi.signed root=UUID=00883037-516d-4066-9e6b-581d1c2a4b7d ro quiet splash vt.handoff=7
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.13.0-40-generic N/A
linux-backports-modules-3.13.0-40-generic N/A
linux-firmware 1.127.8
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/22/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GMET67WW (2.15 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BECTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGMET67WW(2.15):bd09/22/2014:svnLENOVO:pn20BECTO1WW:pvrThinkPadT540p:rvnLENOVO:rn20BECTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20BECTO1WW
dmi.product.version: ThinkPad T540p
dmi.sys.vendor: LENOVO
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References