I have the same symptom, but with Broadcom wireless card and fresh install of Kubuntu. Tried also Mint 17, same behavior.
ivan@cerebro:~$ uname -a Linux cerebro 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ivan@cerebro:~$ cat /proc/version Linux version 3.13.0-27-generic (buildd@akateko) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 ivan@cerebro:~$ lspci | grep Network 12:00.0 Network controller: Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01) ivan@cerebro:~$ lsmod | grep wl wl 4207846 0 lib80211 14381 2 wl,lib80211_crypt_tkip cfg80211 484040 1 wl The connection never drops when in use, no speed issues. But if I leave the computer unattended for some time, ie no network traffic, the connection drops and the system asks me the password to connect, but the password is correctly configured so that if I cancel the dialog and click on the link at nm-aplet(tray icon) it is reconnected without the need to reenter the password. It seems to me that has to do with network-manager because sometimes there is a notification from the system that informs timeout of autentication from wpa-suplicant. -- 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/1276238 Title: Wifi Connection Dropping/Need to reconnect Status in “linux” package in Ubuntu: Incomplete Bug description: While connected to wifi, my system will randomly drop the connection and ask me to reconnect. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-6-generic 3.13.0-6.23 ProcVersionSignature: Ubuntu 3.13.0-6.23-generic 3.13.0 Uname: Linux 3.13.0-6-generic x86_64 ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jason 2254 F.... pulseaudio CurrentDesktop: Unity Date: Tue Feb 4 16:25:02 2014 HibernationDevice: RESUME=UUID=60d68a6f-e268-441d-a7b9-8626d1521267 InstallationDate: Installed on 2012-11-06 (455 days ago) InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) MachineType: LENOVO 4286CTO ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-6-generic root=UUID=06af135e-53bd-4ecc-ba8a-471be159d14a ro quiet splash i915.semaphores=0 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-6-generic N/A linux-backports-modules-3.13.0-6-generic N/A linux-firmware 1.123 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-01-07 (27 days ago) dmi.bios.date: 12/01/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET56WW (1.26 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET56WW(1.26):bd12/01/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1276238/+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