Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.0 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/v4.0-rc5-vivid/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1435498 Title: networking dead after resume from sleep Status in linux package in Ubuntu: Confirmed Bug description: On resume, networking was disabled and I could not reenable it. There are warnings in the kernel log that are concerning. Networking used to be stable on resume. This kernel or perhaps a previous one seems to have made it less so. jlquinn@tiamat:~/x1carbon$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.10 Release: 14.10 Codename: utopic jlquinn@tiamat:~/x1carbon$ apt-cache policy linux-image-3.16.0-33-generic linux-image-3.16.0-33-generic: Installed: 3.16.0-33.44 Candidate: 3.16.0-33.44 Version table: *** 3.16.0-33.44 0 500 http://us.archive.ubuntu.com/ubuntu/ utopic-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ utopic-security/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu/ utopic-proposed/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-33-generic 3.16.0-33.44 ProcVersionSignature: Ubuntu 3.16.0-33.44-generic 3.16.7-ckt7 Uname: Linux 3.16.0-33-generic x86_64 ApportVersion: 2.14.7-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: jlquinn 2435 F.... pulseaudio /dev/snd/controlC0: jlquinn 2435 F.... pulseaudio CurrentDesktop: Unity Date: Mon Mar 23 14:50:01 2015 HibernationDevice: RESUME=UUID=650995f4-6763-4d42-966e-5c0689b207ea InstallationDate: Installed on 2014-10-08 (166 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: LENOVO 20A8S0SG00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic root=UUID=95206ff2-9e2a-4ea3-b390-c5235863b247 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-33-generic N/A linux-backports-modules-3.16.0-33-generic N/A linux-firmware 1.138.1 SourcePackage: linux UpgradeStatus: Upgraded to utopic on 2015-02-28 (23 days ago) dmi.bios.date: 09/02/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GRET40WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 20A8S0SG00 dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGRET40WW(1.17):bd09/02/2014:svnLENOVO:pn20A8S0SG00:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A8S0SG00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20A8S0SG00 dmi.product.version: ThinkPad X1 Carbon 2nd dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435498/+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