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[Dirk Schmidtke <dirkschmidtke@xxxxxx>]

Install the recently released stable Kernel 4.3 from Ubuntu mainline
kernel repository, that solved wlan for me. However, Bluetooth has
issues now with stereo playback. A2DP is selectable, but playback
remains mono. I am still investigating whether this is another marvell
issue (since the marvell card on the Surface Pro is a combined WLAN and
Bluetooth device).

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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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