kernel-packages team mailing list archive

[david wood <1354975@xxxxxxxxxxxxxxxxxx>]

X1 Carbon 2014, Ubuntu 14.04, Intel 7260 wireless module, was definitely
severely affected by this bug.

Have been "relatively" stable with:

1. In the /usr/lib/pm-utils/power.d directory in the file wireless I changed in the end of the file with two off so that there is no wireless powersave:
case $1 in
    true) wireless_powersave off ;;
    false) wireless_powersave off ;;
    *) exit $NA ;;
esac
2. I also blacklisted wireless power management creating blacklist file :
sudo nano /etc/pm/config.d/blacklist
HOOK_BLACKLIST="wireless"
3. Kernel from Seth Forshee, http://people.canonical.com/~sforshee/iwl-ltr/trusty/ - In other words, 3.13.0-37_3.13.0-37.64+iwlltr0001
4. loaded firmware version 22.24.8.0 op_mode iwlmvm
5. linux-firmware 1.127.7

By this I mean, definitely able to stress the network and only 1-3
incidents of failure within 3 days, which is at least a couple orders of
magnitude better than stock 14.04, and I can't say for certain yet if it
isn't just working now. I have a subjective sense that the wifi is still
not completely solid, but no hard evidence. I have not yet observed a
difference between 2.4Ghz and 5Ghz (or N/AC or different channels, etc).

If there's anything else it'd be useful to report - or test - please
don't hesitate to ask.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1354975

Title:
  iwlwifi Intel 7260 Wifi disconnects

Status in Unity Linux:
  New
Status in “linux-firmware” package in Ubuntu:
  Fix Released

Bug description:
  I experience frequent disconnects and auth issues, never more than 30
  minutes without a disconnect. Sometimes dozens of disconnects in a few
  minutes.

  This happens with the default 7260-8 firmware.
  Tried replacing the -8 with -9 ucode. Failed to load due to API version. This loaded the -7 driver which seems to be more stable.

  Tested against 2.4ghz APs (Apple, Netgear, Linksys).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  steve      2577 F.... pulseaudio
   /dev/snd/controlC1:  steve      2577 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Aug 10 17:49:06 2014
  HibernationDevice: RESUME=UUID=374a0c1c-4ac2-456b-a67e-9ea54fe11fe6
  InstallationDate: Installed on 2013-12-28 (225 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. XPS 12-9Q33
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=58deb355-7a09-440b-ade2-69a84fd74460 ro ipv6.disable=1 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-07-06 (35 days ago)
  dmi.bios.date: 05/06/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A00
  dmi.board.name: XPS 12-9Q33
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA00:bd05/06/2013:svnDellInc.:pnXPS12-9Q33:pvrA00:rvnDellInc.:rnXPS12-9Q33:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: XPS 12-9Q33
  dmi.product.version: A00
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/unitylinux/+bug/1354975/+subscriptions