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[celari <celari@xxxxxxxxxx>]

Hi, i have the same problem:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:        14.04
Codename:       trusty

ASRock Rack > C2750D4I

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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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