same issue,  my AP:

ASUS, RT-N12HP

use 802.11g/n mode,  2.4G channels
2014/5/7 上午1:55 於 "Barry" <email address hidden> 寫道：

> Hi Emmanuel.
>
> Original submitter here:
>
> Unfortunately I haven't had time to try to capture packets during
> failure, but I'm open to doing that (hopefully today or tomorrow).
>
> Here are the details for my AP:
>
> Overview:               This is one of the standard ATT Uverse Modems. No
> specific config changes (besides password), otherwise stock standard.
> Manufacturer:           Pace Plc
> Model:                  3800HGV-B
> Software Version:       6.9.1.42-plus.tm
> Wireless Mode:  802.11b/g
> Auth Type:              WPA-PSK (TKIP) and WPA2-PSK (AES)
> DTIM Period:            1
> Rate:                   54Mbps
>
> Others in thread who are affected, please post an overview of your AP so
> that a profile can be built.
>
> Regards,
> Barry
>
> On May 6, 2014, at 12:00 PM, Emmanuel Grumbach <email address hidden>
> wrote:
>
> > Daniel, if you don't have issues, this is not very useful...
> >
> > --
> > You received this bug notification because you are subscribed to the bug
> > report.
> > https://bugs.launchpad.net/bugs/1293569
> >
> > Title:
> >  iwlwifi-7260-8.ucode causes network disconnections problems
> >
> > Status in “linux-firmware” package in Ubuntu:
> >  Confirmed
> > Status in “linux-firmware” source package in Precise:
> >  Fix Committed
> > Status in “linux-firmware” source package in Trusty:
> >  Fix Committed
> >
> > Bug description:
> >  Running 14.04 (beta) with Kernel 3.13.0-17-generic
> >
> >  I've encountered a strange and reproducible error with the
> >  iwlwifi-7260-8.ucode firmware.
> >
> >  This laptop is a Dell XPS 12 (haswell). With the -8 firmware, it will
> >  connect fine to wifi for 30 or 40 mins at a time, then will start
> >  dropping connections repeatedly. Even modprobe -r unloading and
> >  reloading doesn't fix the issue, only a reboot will temporarily solve
> >  it for 40 mins at a time.
> >
> >  Moreover, here is what's strange, is during these episodes of
> >  disconnection it seems to affect the actual router (2Wire), as the
> >  other devices in the house will also start to have issues (very slow
> >  connections, limited range,etc).  Once I reboot this laptop everything
> >  and all devices will return to normal.
> >
> >  This issue has been fixed by me manually removing the -8 firware from
> >  /lib/firmware and letting the -7 firmware load instead. Since that has
> >  been done there has not been a single issue of this happening (now
> >  going on 4 days).
> >
> >  let me know if there is any other information you would like me to
> >  provide.
> >
> >  ProblemType: Bug
> >  DistroRelease: Ubuntu 14.04
> >  Package: linux-firmware 1.126
> >  ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
> >  Uname: Linux 3.13.0-17-generic x86_64
> >  ApportVersion: 2.13.3-0ubuntu1
> >  Architecture: amd64
> >  CurrentDesktop: Unity
> >  Date: Mon Mar 17 08:13:25 2014
> >  Dependencies:
> >
> >  EcryptfsInUse: Yes
> >  InstallationDate: Installed on 2014-03-07 (9 days ago)
> >  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64
> (20140307)
> >  PackageArchitecture: all
> >  SourcePackage: linux-firmware
> >  UpgradeStatus: No upgrade log present (probably fresh install)
> >
> > To manage notifications about this bug go to:
> >
> https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1293569/+subscriptions
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1293569
>
> Title:
>   iwlwifi-7260-8.ucode causes network disconnections problems
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1293569/+subscriptions
>