I have the same problems. I'm on a Sager laptop with an Intel 7260AC . Worked fine for months (since last September) with previous releases (had used backports and was most recently on kernel 3.11.0-20 before upgrade to 14.04).
Connection now exhibits: slowness (sporadically), drops (anwhere from 3 minutes after connecting to 2 hours after), and loss of connection after screen timeout lock and logging back in (which may just be the same problem as the time). When in the state of the connection having dropped, the listing of wireless connections available to connect to shows all of my neighbors' routers, but not mine. Disabling wireless connections and then immediately re-enabling will re- establish the connection for 2-120 minutes. I will also note that when initially connecting, I will have good signal strength indicated in the status widget (e.g. 3-4 bands) but that after some minutes it shows weaker (1-2 bands). All this without moving the physical location of the computer (distance to router). -- 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/1305305 Title: 8086:08b1 [Sony VAIO SVP1321M2E] Wifi keeps dropping. Status in “linux” package in Ubuntu: Incomplete Bug description: Using a Sony Vaio Pro 13 with Ubuntu 14.04 the wifi keeps dropping. Sometimes all the time, at times after a bit longer (~10 min). A few packages ago it didn't drop, but was really, really, slow. Now it completely drops. Adding the following to modprobe.conf made no change: options iwlwifi 11ac_disable=1 options iwlwifi 11n_disable=1 After each new row I ran: sudo modprobe -rfv iwlwifi sudo modprobe -v iwlwifi Tried turning off the power management of wlan0 without any change. WORKAROUND: Within 2 m I have full speed and no disconnects. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-generic 3.13.0.19.23 ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6 Uname: Linux 3.13.0-19-generic x86_64 ApportVersion: 2.14.1-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: daniel 2105 F.... pulseaudio /dev/snd/controlC1: daniel 2105 F.... pulseaudio CurrentDesktop: Unity Date: Wed Apr 9 22:44:08 2014 HibernationDevice: RESUME=UUID=a8a44495-3583-451d-99c8-b5be0e8cf0ca InstallationDate: Installed on 2014-04-09 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323) MachineType: Sony Corporation SVP1321M2EB ProcEnviron: LANGUAGE=sv PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=sv_SE.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-19-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-19-generic N/A linux-backports-modules-3.13.0-19-generic N/A linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/21/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: R1043V7 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR1043V7:bd11/21/2013:svnSonyCorporation:pnSVP1321M2EB:pvrC60C0754:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: SVP1321M2EB dmi.product.version: C60C0754 dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1305305/+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