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[Luca Mastromatteo <lukycrociato@xxxxxxxxx>]

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https://bugs.launchpad.net/bugs/1547151

Title:
  r8169 kernel module problem

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I'm in trouble with my notebook Acer Aspire E5-571G and its realtek ethernet controller using the kernel module r8169, particularly at school when I'm connecting with my Ethernet cable to its network. It just basically doesn't see my cable, like it is disconnected, this problem came after I've changed it. And I've find on the net how to fix it using ethtool `ethtool -s enp1s0f1 autoneg off speed 100 duplex full` 
  Maybe this cable is maximum 100Mbps capable  and the driver can't manage how to get it working with a gigabit network, since with other (Gigabit) better cables I don't have this problem.  Also I don't have problems in Windows or with other computers using the same cable. (Windows connection speed with this cable is 100mbit) I've tried also with a different computer using the same kernel driver with the same LAN chip and the same problem happened. Since the realtek r8168 works flawlessly but it disconnects randomly I prefer using the one provided by the linux kernel.

  Using Ubuntu 4.2.0-29.34-generic 4.2.8-ckt3 Linux kernel.

  Ubuntu 15.10 Wily

  The network should be working with any cable

  Seems like linux does not detect the 100Mbit cable on a 1000Mbit network, don't know if on a 100mbit network it has the same problem.
  --- 
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  luky       1556 F.... pulseaudio
   /dev/snd/controlC0:  luky       1556 F.... pulseaudio
  CurrentDesktop: X-Cinnamon
  DistroRelease: Ubuntu 15.10
  InstallationDate: Installed on 2016-02-12 (6 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Acer Aspire E5-571G
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-29-generic.efi.signed root=UUID=211171d7-1b39-4c4b-8078-7ccbdd97ffdc ro quiet acpi_osi= acpi=force acpi_enforce_resources=lax i915.enable_rc6=1 i915.enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1 drm.vblankoffdelay=1 acpi_backlight=vendor
  ProcVersionSignature: Ubuntu 4.2.0-29.34-generic 4.2.8-ckt3
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-29-generic N/A
   linux-backports-modules-4.2.0-29-generic  N/A
   linux-firmware                            1.149.3
  Tags:  wily
  UdevLog: Error: [Errno 2] File o directory non esistente: '/var/log/udev'
  Uname: Linux 4.2.0-29-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/03/2015
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.31
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: EA50_HB
  dmi.board.vendor: Acer
  dmi.board.version: V1.31
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.31:bd08/03/2015:svnAcer:pnAspireE5-571G:pvrV1.31:rvnAcer:rnEA50_HB:rvrV1.31:cvnAcer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire E5-571G
  dmi.product.version: V1.31
  dmi.sys.vendor: Acer

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