Henry Xing, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.
If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where XY and Z are numbers corresponding to the kernel version. If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: latest-bios-a07 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Description changed: - I've 2 Dell PCs, and they both have the same problem. - After upgrade to 3.13.0-53-generic, the PC's network will break in several minutes. Unplug and re-plug in the network cable will recover - the network, but will break again later. - - And I have upgraded the BIOS to latest version: - sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date - A07 - 01/14/2015 - - Revert to 3.13.0.52 can make network recover and work properly. + the network, but will break again later. Reverting to 3.13.0.52 can make + network recover and work properly. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-52-generic 3.13.0-52.86 ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18 Uname: Linux 3.13.0-52-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: henryxing 2865 F.... pulseaudio - /dev/snd/controlC1: henryxing 2865 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: henryxing 2865 F.... pulseaudio + /dev/snd/controlC1: henryxing 2865 F.... pulseaudio CurrentDesktop: Unity Date: Fri May 22 07:51:29 2015 DistributionChannelDescriptor: - # This is a distribution channel descriptor - # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor - canonical-oem-somerville-precise-amd64-20130203-1 + # This is a distribution channel descriptor + # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor + canonical-oem-somerville-precise-amd64-20130203-1 HibernationDevice: RESUME=UUID=1457f3e6-5111-483b-9edb-3172db7f9414 InstallationDate: Installed on 2014-08-20 (274 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50 MachineType: Dell Inc. OptiPlex 3020 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-52-generic root=UUID=50cc2e8d-78fd-42f6-94f5-cb5e12ab3e42 ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.13.0-52-generic N/A - linux-backports-modules-3.13.0-52-generic N/A - linux-firmware 1.127.12 + linux-restricted-modules-3.13.0-52-generic N/A + linux-backports-modules-3.13.0-52-generic N/A + linux-firmware 1.127.12 RfKill: - + SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-09-24 (239 days ago) WifiSyslog: - + dmi.bios.date: 01/14/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 040DDP dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/14/2015:svnDellInc.:pnOptiPlex3020:pvr01:rvnDellInc.:rn040DDP:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 3020 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. -- 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/1457936 Title: Network breaks in several minutess after upgrade to 3.13.0-53-generic Status in linux package in Ubuntu: Incomplete Bug description: After upgrade to 3.13.0-53-generic, the PC's network will break in several minutes. Unplug and re-plug in the network cable will recover the network, but will break again later. Reverting to 3.13.0.52 can make network recover and work properly. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-52-generic 3.13.0-52.86 ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18 Uname: Linux 3.13.0-52-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: henryxing 2865 F.... pulseaudio /dev/snd/controlC1: henryxing 2865 F.... pulseaudio CurrentDesktop: Unity Date: Fri May 22 07:51:29 2015 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-precise-amd64-20130203-1 HibernationDevice: RESUME=UUID=1457f3e6-5111-483b-9edb-3172db7f9414 InstallationDate: Installed on 2014-08-20 (274 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50 MachineType: Dell Inc. OptiPlex 3020 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-52-generic root=UUID=50cc2e8d-78fd-42f6-94f5-cb5e12ab3e42 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-52-generic N/A linux-backports-modules-3.13.0-52-generic N/A linux-firmware 1.127.12 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-09-24 (239 days ago) WifiSyslog: dmi.bios.date: 01/14/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 040DDP dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/14/2015:svnDellInc.:pnOptiPlex3020:pvr01:rvnDellInc.:rn040DDP:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 3020 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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