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[Marvin Scholz <epirat07@xxxxxxxxx>]

Without any hint which commit(s) could be affected, this can take ages,
as the problem is very hard to reproduce… I would need to test each
commit for hours until I can say if the bug is present or not…

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https://bugs.launchpad.net/bugs/1444766

Title:
  Wifi connection issues

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  1) Ubuntu Version: 15.04 (Vivid Vervet)
  2) Kernel Version: 3.19.0-12-generic

  Wireless: Intel Wireless 7265 (on Thinkpad X250)

  3) I expect Wifi to work as expected without connection drops.

  4) I am experiencing sudden connection drops, which means I am not
  able to connect to anything after a certain time and it seems that it
  only happens after certain amount of data has be downloaded. Although
  the Wifi still appears as connected, it behaves like it isn't.

  Other:
  When I am booting with Kernel 3.16.0-23-generic I do not experience any Wifi connection problems at all.

  (I am not sure if this bugreport is fine, as this is the first time I am reporting a bug here, I will be happy to do improvements to the report if I did anything wrong or provide as much data as possible upon request.)
  --- 
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  epirat     1708 F.... pulseaudio
   /dev/snd/controlC0:  epirat     1708 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-04-09 (6 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 20CLS0JA00
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic root=UUID=28d14754-0ce2-45a9-a1aa-068caaab54d0 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-12-generic N/A
   linux-backports-modules-3.19.0-12-generic  N/A
   linux-firmware                             1.143
  Tags:  vivid
  Uname: Linux 3.19.0-12-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2015-04-09 (6 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 01/23/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N10ET28W (1.05 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20CLS0JA00
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrN10ET28W(1.05):bd01/23/2015:svnLENOVO:pn20CLS0JA00:pvrThinkPadX250:rvnLENOVO:rn20CLS0JA00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20CLS0JA00
  dmi.product.version: ThinkPad X250
  dmi.sys.vendor: LENOVO

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