There have been cases of routers which get into a state where they are sending corrupted beacons which the iwlwifi firmware rejects, which can lead to the types of disconnections I see in your logs. It's possible that this is what happened, and when you updated (and presumably rebooted) your router it cleared up the issue.
I'm closing the bug as invalid. If you see issues again you can reopen this bug. ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1366248 Title: [Intel D54250WYK] Wireless Dropped Connection Intel 7260.HMWG Status in “linux” package in Ubuntu: Invalid Bug description: The wireless connection is dropping once again. Everything seemed fine after the last dist-upgrade on or around 8/29. An apt-get update/upgrade between 8/29 and 9/3 seems to have introduced this bug. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-35-generic 3.13.0-35.62 ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6 Uname: Linux 3.13.0-35-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: justin 1549 F.... pulseaudio /dev/snd/controlC0: justin 1549 F.... pulseaudio CurrentDesktop: Unity Date: Fri Sep 5 19:51:33 2014 HibernationDevice: RESUME=UUID=8048d919-eb4b-45eb-a626-ebd626d468f1 InstallationDate: Installed on 2014-04-25 (133 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed root=UUID=ba994e83-d5aa-4912-825f-c6d10a7d86ae ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-35-generic N/A linux-backports-modules-3.13.0-35-generic N/A linux-firmware 1.127.5 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/03/2014 dmi.bios.vendor: Intel Corp. dmi.bios.version: WYLPT10H.86A.0025.2014.0303.1008 dmi.board.name: D54250WYK dmi.board.vendor: Intel Corporation dmi.board.version: H13922-303 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorp.:bvrWYLPT10H.86A.0025.2014.0303.1008:bd03/03/2014:svn:pn:pvr:rvnIntelCorporation:rnD54250WYK:rvrH13922-303:cvn:ct3:cvr: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1366248/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp