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[Anthony Wong <anthony.wong@xxxxxxxxxx>]

** Changed in: hwe-next
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1762693

Title:
  No network with e1000e driver on 4.13.0-38-generic

Status in HWE Next:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Invalid
Status in linux-oem source package in Xenial:
  Fix Released
Status in linux source package in Artful:
  Fix Committed
Status in linux-oem source package in Artful:
  Invalid

Bug description:
  ===SRU Justification===
  [Impact]
  e1000e stops working since 4.13.0-38-generic/4.13.0-1022-oem.
  The regression was introduced by patches in LP: #1730550.

  [Fix]
  Commit 4110e02eb45ea447ec6f5459c9934de0a273fb91 fixes the issue.
  e1000e now reports correct link status.

  [Test]
  With the extra commit, the e1000e starts to working again.

  [Regression Potential]
  Low.
  It says:
  Fixes: 19110cfbb34d ("e1000e: Separate signaling for link check/link up")
  So it's pretty clear this patch is to fix the regression.

  It's in upstream linux-stable, so only Arftul needs this patch.

  ===Original Bug Report===
  When my computer boots with the most recent kernel 4.13.0-38-generic, I don't have a working network connection. ethtool reports that my network interface doesn't have a connection:

  martin@dogmeat ~ % cat ethtool.txt
  Settings for eth0:
          Supported ports: [ TP ]
          Supported link modes:   10baseT/Half 10baseT/Full
                                  100baseT/Half 100baseT/Full
                                  1000baseT/Full
          Supported pause frame use: No
          Supports auto-negotiation: Yes
          Advertised link modes:  10baseT/Half 10baseT/Full
                                  100baseT/Half 100baseT/Full
                                  1000baseT/Full
          Advertised pause frame use: No
          Advertised auto-negotiation: Yes
          Speed: Unknown!
          Duplex: Unknown! (255)
          Port: Twisted Pair
          PHYAD: 2
          Transceiver: internal
          Auto-negotiation: on
          MDI-X: Unknown (auto)
          Supports Wake-on: pumbg
          Wake-on: g
          Current message level: 0x00000007 (7)
                                 drv probe link
          Link detected: no

  dmesg contains suspicious e1000e error messages:

  martin@dogmeat ~ % tail -n 40 dmesg.txt
  [   20.211715] Could not find valid key in user session keyring for sig specified in mount option: [459a10809c211381]
  [   20.211716] One or more global auth toks could not properly register; rc = [-2]
  [   20.211717] Error parsing options; rc = [-2]
  [   25.824466] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   25.969587] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   30.034472] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   35.808558] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   35.939670] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   40.037526] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   46.048494] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   46.263237] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   51.022052] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   51.244686] ahci 0000:00:17.0: port does not support device sleep
  [   56.800544] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   56.935347] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   61.036903] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   67.040536] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   67.199669] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   72.038713] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   78.048576] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   78.170825] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   83.038119] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   88.800521] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   88.938939] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [   93.021350] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [   99.040543] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [   99.163603] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [  104.038668] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [  110.048532] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [  110.191137] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [  115.022823] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [  120.800524] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [  120.910537] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [  125.019509] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [  131.040530] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [  131.164741] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [  136.039268] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500
  [  142.048536] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
  [  142.186891] e1000e 0000:00:1f.6 eth0: changing MTU from 1500 to 1492
  [  147.038361] e1000e 0000:00:1f.6 eth0: changing MTU from 1492 to 1500

  Everything works fine when I boot Linux 4.13.0-37-generic.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-38-generic 4.13.0-38.43
  ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
  Uname: Linux 4.13.0-38-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  martin     2756 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Tue Apr 10 11:34:19 2018
  EcryptfsInUse: Yes
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic root=UUID=8ee32f29-87ea-4229-8807-35171b6dfeed ro quiet splash nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-38-generic N/A
   linux-backports-modules-4.13.0-38-generic  N/A
   linux-firmware                             1.169.3
  RfKill:

  SourcePackage: linux
  UpgradeStatus: Upgraded to artful on 2018-01-23 (76 days ago)
  dmi.bios.date: 09/20/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2002
  dmi.board.asset.tag: Default string
  dmi.board.name: H170-PRO/USB 3.1
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2002:bd09/20/2016:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH170-PRO/USB3.1:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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