David Carter - that's no good! My guess would be that you now have a missing firmware problem.
Run the following command in a terminal: "ls /lib/firmware/iwlwifi-7*" you should have at least one file listed. I actually have two: /lib/firmware/iwlwifi-7260-7.ucode /lib/firmware/iwlwifi-7260-8.ucode If you don't then you definitely have missing firmware . If you do have a file, you might not have the correct one for your edition of the wireless card. Note that I upgraded to Ubuntu 14.04 (rather than clean install), and I had put the -7.ucode version of the firmware file in place months back in order to get the card to work at all (the older kernels didn't support this card at all). Here's a summary of how I installed backports for this card and the firmware: Download the ucode file for the 3.13 kernel here: http://wireless.kernel.org/en/users/Drivers/iwlwifi?action=AttachFile&do=get&target=iwlwifi-7260-ucode-22.0.6.0.tgz#Firmware Download backports for 3.13 here: http://drvbp1.linux-foundation.org/~mcgrof/rel-html/backports/ Un-tar the downloaded files: tar xvf backports-3.13.2-1.tar.xz tar xvf iwlwifi-7260* Then build backports for iwlwifi cd backports-3.13.2-1/ make defconfig-iwlwifi make sudo make install Then copy the firmware ucode file to /lib/firmware cd .. cd iwlwifi* sudo cp iwlwifi* /lib/firmware -- 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