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[wilk <j.cubizolles@xxxxxxx>]

** Tags added: kernel-bug-reported-upstream

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https://bugs.launchpad.net/bugs/1449438

Title:
  Marvell 88W8797 wifi (module mwifiex) does not work on Surface Pro

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I've been running Ubuntu 14.10 on a Microsoft Surface Pro. After some
  initial problems (see
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165938) (fixed
  by kernel updates I guess) the wifi was working fine. Since the
  upgrade to 15.04 the problems are back: I can connect to a wifi
  network, the connection is working for a few seconds but drops right
  after. I attached the relevant entries in dmes.log.

  I tried installing the marvell firmware from git://git.marvell.com
  /mwifiex-firmware.git, that didn't change anything. I also tried the
  mainline kernel from http://kernel.ubuntu.com/~kernel-
  ppa/mainline/v4.1-rc1-vivid/: the connection is again working for a
  few seconds but the whole system hangs afterwards.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-15-generic 3.19.0-15.15
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  wilk       1792 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 28 10:57:42 2015
  HibernationDevice: RESUME=UUID=adb12a68-9928-4181-b4e2-487010d3c501
  InstallationDate: Installed on 2014-02-19 (432 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Microsoft Corporation Surface with Windows 8 Pro
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic.efi.signed root=UUID=919f00b8-5010-46e1-b2f9-c129e17d5312 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-15-generic N/A
   linux-backports-modules-3.19.0-15-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-04-27 (0 days ago)
  dmi.bios.date: 01/08/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.00.0250
  dmi.board.asset.tag: 0
  dmi.board.name: Surface with Windows 8 Pro
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: 1
  dmi.chassis.asset.tag: 0
  dmi.chassis.type: 17
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: 1
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.00.0250:bd01/08/2013:svnMicrosoftCorporation:pnSurfacewithWindows8Pro:pvr1:rvnMicrosoftCorporation:rnSurfacewithWindows8Pro:rvr1:cvnMicrosoftCorporation:ct17:cvr1:
  dmi.product.name: Surface with Windows 8 Pro
  dmi.product.version: 1
  dmi.sys.vendor: Microsoft Corporation

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