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 -- 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