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[Bug 1469628] [NEW] alx module not working correctly

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Public bug reported:

Since when I upgraded from kernel linux-image-extra-3.19.0-16, alx module stopped working correctly. 
a ping to a reachable host results in ~50% packet loss.
Dmesg reports this: 

[  336.763660] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[  336.765816] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
[  372.883211] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[  372.888582] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
[  414.519237] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[  414.521448] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full


With kernel linux-image-extra-3.19.0-16 everything works fine.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-extra-3.19.0-21-generic 3.19.0-21.21
ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
Uname: Linux 3.19.0-16-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  cernio     2994 F.... pulseaudio
 /dev/snd/controlC1:  cernio     2994 F.... pulseaudio
Date: Mon Jun 29 10:02:42 2015
HibernationDevice: RESUME=UUID=437ac68c-76ff-428e-bd50-2010ba6942a5
InstallationDate: Installed on 2013-06-06 (752 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IwConfig:
 eth0      no wireless extensions.
 
 lo        no wireless extensions.
MachineType: Hewlett-Packard HP Elite 7500 Series MT
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic root=UUID=3b531c07-650c-4606-a86a-a7bf55d6af98 ro quiet splash vt.handoff=7
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-16-generic N/A
 linux-backports-modules-3.19.0-16-generic  N/A
 linux-firmware                             1.143.1
RfKill:
 
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/06/2013
dmi.bios.vendor: AMI
dmi.bios.version: 8.17
dmi.board.name: 2AD5
dmi.board.vendor: PEGATRON CORPORATION
dmi.board.version: 1.03
dmi.chassis.asset.tag: CZC3110LN2
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnAMI:bvr8.17:bd02/06/2013:svnHewlett-Packard:pnHPElite7500SeriesMT:pvr1.00:rvnPEGATRONCORPORATION:rn2AD5:rvr1.03:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: HP Elite 7500 Series MT
dmi.product.version: 1.00
dmi.sys.vendor: Hewlett-Packard

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

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https://bugs.launchpad.net/bugs/1469628

Title:
  alx module not working correctly

Status in linux package in Ubuntu:
  New

Bug description:
  Since when I upgraded from kernel linux-image-extra-3.19.0-16, alx module stopped working correctly. 
  a ping to a reachable host results in ~50% packet loss.
  Dmesg reports this: 

  [  336.763660] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
  [  336.765816] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
  [  372.883211] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
  [  372.888582] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
  [  414.519237] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
  [  414.521448] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full

  
  With kernel linux-image-extra-3.19.0-16 everything works fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-extra-3.19.0-21-generic 3.19.0-21.21
  ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
  Uname: Linux 3.19.0-16-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  cernio     2994 F.... pulseaudio
   /dev/snd/controlC1:  cernio     2994 F.... pulseaudio
  Date: Mon Jun 29 10:02:42 2015
  HibernationDevice: RESUME=UUID=437ac68c-76ff-428e-bd50-2010ba6942a5
  InstallationDate: Installed on 2013-06-06 (752 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Hewlett-Packard HP Elite 7500 Series MT
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic root=UUID=3b531c07-650c-4606-a86a-a7bf55d6af98 ro quiet splash vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-16-generic N/A
   linux-backports-modules-3.19.0-16-generic  N/A
   linux-firmware                             1.143.1
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/06/2013
  dmi.bios.vendor: AMI
  dmi.bios.version: 8.17
  dmi.board.name: 2AD5
  dmi.board.vendor: PEGATRON CORPORATION
  dmi.board.version: 1.03
  dmi.chassis.asset.tag: CZC3110LN2
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAMI:bvr8.17:bd02/06/2013:svnHewlett-Packard:pnHPElite7500SeriesMT:pvr1.00:rvnPEGATRONCORPORATION:rn2AD5:rvr1.03:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: HP Elite 7500 Series MT
  dmi.product.version: 1.00
  dmi.sys.vendor: Hewlett-Packard

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