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[John <1442908@xxxxxxxxxxxxxxxxxx>]

I have a Lenovo B50 with RTL8723BE and have the same problem. I had the problem with 14.04.
It went away with 14.10, but it has come back with 15.04. It also happens with Opensuse 13.2 on the same machine.

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https://bugs.launchpad.net/bugs/1442908

Title:
  Realtek RTL8723BE wireless card drops connection in Linux kernel
  3.19.0-13

Status in linux package in Ubuntu:
  Invalid

Bug description:
  Blacklisting ideapad_laptop makes Realtek RTL8723BE wireless card to
  work, but the connection is being drop after some time. This is an old
  bug but still happens in ubuntu/kubuntu 15.04,  the Linux Kernel
  version is 3.19.0-13.

  Card: Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
  03:00.0 Eth

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-13-generic 3.19.0-13.13
  ProcVersionSignature: Ubuntu 3.19.0-13.13-generic 3.19.3
  Uname: Linux 3.19.0-13-generic x86_64
  ApportVersion: 2.17-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  octavio    1660 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sat Apr 11 09:43:48 2015
  HibernationDevice: RESUME=UUID=a235be69-e7e1-4220-b191-50f0fa2158d1
  InstallationDate: Installed on 2015-04-10 (0 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150409)
  MachineType: LENOVO 80FY
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-13-generic root=UUID=9254a6a3-248e-4e61-8479-7ed07edb5bf7 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-13-generic N/A
   linux-backports-modules-3.19.0-13-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/18/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A7CN40WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lancer 4A6
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900059WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G40-30
  dmi.modalias: dmi:bvnLENOVO:bvrA7CN40WW:bd07/18/2014:svnLENOVO:pn80FY:pvrLenovoG40-30:rvnLENOVO:rnLancer4A6:rvr31900059WIN:cvnLENOVO:ct10:cvrLenovoG40-30:
  dmi.product.name: 80FY
  dmi.product.version: Lenovo G40-30
  dmi.sys.vendor: LENOVO

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