kernel-packages team mailing list archive

[Ej <edsjag@xxxxxxxxx>]

Have just now downloaded and run "sudo dpkg -i *.deb" on these:

linux-image-3.15.0-031500rc5-generic_3.15.0-031500rc5.201405091635_amd64.deb
linux-headers-3.15.0-031500rc5_3.15.0-031500rc5.201405091635_all.deb
linux-headers-3.15.0-031500rc5-generic_3.15.0-031500rc5.201405091635_amd64.deb

Booted on 3.15.0-031500rc5 and wireless doesn't appear to be any
different so far but only have about 30 mins of uptime so far.

I have noticed that wireless strength has been consistently low too over
the last 24-36 hours.   (It is low, but consistent.)

(quick back-story) : Router is a Linksys E4200 running DD-WRT firmware.
The WiFi has been split to b/g on one antennae and the mixed n/a on the
other.   They are different networks (one with a -n tag  on the n/a
network SSID to ensure differentiation).

I have my iphone 5 (not 5s) next to me here and the signal is strong (full bars) but the laptop only shows 2 of the 4 bars signal.   This has been consistent with the 3.13 Kernel and also now the 3.15rc version.  
If I go to a room that is further away (which means signal would run through two walls instead of one), signal strength stays the same;  two bars out of 4.  I streamed doctor who for a few hours last night and didn't have any issues.   

I will continue to use/test and will report again soon.   
Is there anything else that I can do to assist with testing?   
 
Also, will I have to GRUB boot and choose the 3.15rc kernel on each boot, or now that I have selected it once will it continue to default to it?  

Thanks for your continuing assistance.  :)

Kind regards,

Ed.

-- 
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/1318110

Title:
  8086:08b1 (rev 73) [Dell Latitude E4300] Stability of Intel 7260ac
  mini wifi card

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Fresh install of Linux and all updates installed. This issue occured on the prior installation of Ubuntu as well (what version specifically???).
  Will work connect perfectly on boot and works fine for 10mins - a few hours then it drops out and won't reconnect until system is put in standby (shut lid to standby) and then power back up (open lid to power back up) - then wifi connects and runs fine. I too get the varying signal strength issue - not physically moving laptop at all and signal will jump from 4 bars to 1 then after a while it jumps back to 4 bars again. Laptop is only 4-5 meters away from WiFi router but through one heavy brick wall. I have tried upping the output of the router (Linksys w/ DD-WRT) from 100 mw to 120 then 140 but this made the connection worse (noise to signal was awful). Once router reset back to default at 100mw it returned to the same as prior.
  Additionally, if I change router settings and the laptop drops the connection (as it might depending on setting changed), sometimes it will reconnect automatically, sometimes not. If the system is put in standby for a few seconds and woken (as descibed above) it will pick the connection back up every time.

  I have dropped the beacon interval as advised and am testing to see
  how it goes.

  I believe related to Intel driver / firmware - iwfwifi-7260-7.ucode
  and/or iwfwifi-7260-8.ucode

  Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 73)
  Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4070]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ej         2217 F.... pulseaudio
   /dev/snd/pcmC0D0p:   ej         2217 F...m pulseaudio
  CurrentDesktop: Unity
  Date: Sat May 10 11:24:51 2014
  HibernationDevice: RESUME=UUID=25ef29f2-d739-442c-b2ea-6b5eb584fa26
  InstallationDate: Installed on 2014-05-08 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Latitude E4300
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/04/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A26
  dmi.board.name: 0J795R
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA26:bd06/04/2013:svnDellInc.:pnLatitudeE4300:pvr:rvnDellInc.:rn0J795R:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude E4300
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1318110/+subscriptions