Additional info for comment #9: according to reports on 4pda forum S3/S4
behave erratically with Windows too, so probably there is issues with
BIOS. What works here is Windows Connected Standy and Linux Suspend
Freeze. Maybe BIOS issue could be workaround somehow to make S3/S4 works
too, not sure about this.

Christopher, with Linux 4.7:
S3 not working at all, same behaviour as described in original bugreport 
description. Patches from https://bugzilla.kernel.org/show_bug.cgi?id=102281 
required to make it semi-working, at least as it works with Windows.
S4 - on wakeup system trying to start but then reboot tablet. Again, with Linux 
4.4 and patches from https://bugzilla.kernel.org/show_bug.cgi?id=102281 
hibernate works, but with some issues, for example WiFi and LTE not working 
after wakeup and reboot is required to make it work again.

So, to sum up things, I think making powerbutton working, so people will
able to use at least suspend freeze mode, is goal that worth time. Is
there anyone at Canonical who could review patches from
https://bugzilla.kernel.org/show_bug.cgi?id=102281 to submit it to
upstream?

Patch for Linux 4.4 is here:
https://bugzilla.kernel.org/show_bug.cgi?id=102281#c51

** Tags removed: vivid
** Tags added: xenial yakkety

** Tags removed: kernel-bug-exists-upstream-4.2-rc4 latest-bios-a07
** Tags added: kernel-bug-exists-upstream-4.7 latest-bios-a09

** Tags added: patch

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1472832

Title:
  Suspend issue with Dell Venue 11 Pro 7140

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Instead of suspending the machine into a state where it can be started
  quickly, it appears that suspend causes the system to end up in a
  state which requires a forced start.  The power light is off, and the
  only way to start the machine again is to hold down the power button
  for more than 5 seconds. A quick check of uptime shows that it did,
  indeed, start again.

  I'm attaching a suspend log.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-generic (not installed)
  ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
  Uname: Linux 3.19.0-22-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tudor      1785 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Jul  9 10:57:38 2015
  HibernationDevice: RESUME=UUID=3acb1340-1be5-453c-a918-25f6b6ff404e
  InstallationDate: Installed on 2015-07-06 (2 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 
(20150218.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 8087:0a2a Intel Corp. 
   Bus 001 Device 003: ID 114d:1002 Alpha Imaging Technology Corp. 
   Bus 001 Device 002: ID 0bda:5757 Realtek Semiconductor Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. Venue 11 Pro 7140
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-22-generic 
root=UUID=f0dc97e1-7d1c-4d05-a7d8-3cfc8551bdc4 ro quiet splash 
i915.i915_enable_rc6=1 "acpi_osi=!Windows 2013" vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-22-generic N/A
   linux-backports-modules-3.19.0-22-generic  N/A
   linux-firmware                             1.143.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-07-07 (1 days ago)
  dmi.bios.date: 06/30/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA07:bd06/30/2015:svnDellInc.:pnVenue11Pro7140:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Venue 11 Pro 7140
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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