Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.12 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ ** Tags added: kernel-da-key ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1249008 Title: iwlwifi kernel driver does not obey power saving settings Status in “linux” package in Ubuntu: Incomplete Bug description: Poor ping times (high latency) can be observed after unplugging from a power source. To recreate this issue start by disabling power saving and hw encryption while your laptop is plugged in. Power saving can be turned off at module load time, or with iwconfig [dev] power off rmmod iwldvm iwlwifi && modprobe iwlwifi power_save=0 swcrypto=1 power_level=1 Will remove the driver and re-insert with power saving off and sw encryption on. start a ping to your router Watch latency; should be 3ms or so. Unplug laptop from power and watch latency rise to 60+ ms To get reliable networking again, either plug laptop back in or re- issue commands to disable power saving. Changing the power state of the machine changes the power state of the nic regardless of setting. What I've found is that setting power saving to on/off puts the card in power saving state instead of disabling or enabling based on power source. If you unplug your machine you must re-issue the commands to disable power saving. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-extra-3.11.0-12-generic 3.11.0-12.19 ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 Uname: Linux 3.11.0-12-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: junfan 2247 F.... pulseaudio /dev/snd/controlC0: junfan 2247 F.... pulseaudio Date: Thu Nov 7 11:20:09 2013 InstallationDate: Installed on 2013-10-19 (19 days ago) InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 20193 MarkForUpload: True ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=UUID=dfae3dc5-7847-4e9e-a98c-b4ca8ef075a2 ro quiet splash RelatedPackageVersions: linux-restricted-modules-3.11.0-12-generic N/A linux-backports-modules-3.11.0-12-generic N/A linux-firmware 1.116 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/08/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 6BCN42WW(V2.02) dmi.board.asset.tag: No Asset Tag dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900003WIN8 STD MLT dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo IdeaPad Y500 dmi.modalias: dmi:bvnLENOVO:bvr6BCN42WW(V2.02):bd02/08/2013:svnLENOVO:pn20193:pvrLenovoIdeaPadY500:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadY500: dmi.product.name: 20193 dmi.product.version: Lenovo IdeaPad Y500 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1249008/+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
