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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

gustavo panizzo, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1493753

** Package changed: linux-lts-trusty (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1493753

Title:
  igb network adapter is frequenly reset and network disconnected

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have  many logs like this in the dmesg

  [613988.897691] igb 0000:01:00.0: Detected Tx Unit Hang
  [613988.897691]   Tx Queue             <0>
  [613988.897691]   TDH                  <8>
  [613988.897691]   TDT                  <8>
  [613988.897691]   next_to_use          <a>
  [613988.897691]   next_to_clean        <8>
  [613988.897691] buffer_info[next_to_clean]
  [613988.897691]   time_stamp           <10923375a>
  [613988.897691]   next_to_watch        <ffff8810243b5090>
  [613988.897691]   jiffies              <109233e5a>
  [613988.897691]   desc.status          <a98200>
  [613990.899206] igb 0000:01:00.0: Detected Tx Unit Hang
  [613990.899206]   Tx Queue             <0>
  [613990.899206]   TDH                  <8>
  [613990.899206]   TDT                  <8>
  [613990.899206]   next_to_use          <a>
  [613990.899206]   next_to_clean        <8>
  [613990.899206] buffer_info[next_to_clean]
  [613990.899206]   time_stamp           <10923375a>
  [613990.899206]   next_to_watch        <ffff8810243b5090>
  [613990.899206]   jiffies              <10923404e>
  [613990.899206]   desc.status          <a98200>
  [613990.907099] igb 0000:01:00.0 eth0: Reset adapter
  [613991.029348] igb 0000:01:00.0 eth0: igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX

  
  if i boot the machine with 3.16.0-38 the problem does not occur

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-48-generic 3.16.0-48.64~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-48.64~14.04.1-generic 3.16.7-ckt15
  Uname: Linux 3.16.0-48-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  Date: Wed Sep  9 17:04:52 2015
  InstallationDate: Installed on 2015-08-27 (13 days ago)
  InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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