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["Nik.Th." <1386695@xxxxxxxxxxxxxxxxxx>]

Ok, further searching showed that the commit that actually solves this
problem is a merge branch 'for-linus' .

Specifically this one:

[7d1419f30cc5106196e54a282d7e115e698c95f6] Merge branch 'for-linus' of
git://git.samba.org/sfrench/cifs-2.6

I will say the truth that this one tricked me a lot. I didn't look at
the merge itself, but from the title and the description of the commit
(samba..), I considered this as the last one possible to fix my issue.

BUT, because this is a merge it has a bunch of stuff (patches) there and
some of them are directly related with the nouveau_fbcon and
nouveau_drm.

We can see the relevant patches here:

https://git.samba.org/?p=sfrench/cifs-2.6.git;a=commitdiff;h=7d1419f30cc5106196e54a282d7e115e698c95f6;hp=1209bbdff2f6bbffa6eb5823033bbd7b8799a5e2

I have “cherry-picked” from the second parent, which actually holds the
patches I care, and then built and tested the *real* bad kernel
(3.17-rc7) and it's worked as expected.

Do you want me to *try* building an Ubuntu kernel (say the affected one - 3.16.0-23-generic) with this commit(merge) and upload into a PPA, 
or is not necessary ? 

** Attachment added: "Merge branch 'for-linus' of git.samba.org"
   https://bugs.launchpad.net/linux/+bug/1386695/+attachment/4249578/+files/7d1419f30cc5106196e54a282d7e115e698c95f6

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https://bugs.launchpad.net/bugs/1386695

Title:
  [3.16.0-23] Resume from suspend/hibernation, GPU lock - possible
  regression

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  I'm testing the new development branch (Vivid Vervet), which currently
  has the Utopic kernel 3.16.0-23-generic installed (proposed
  repositories are enabled).

  This problem might be a regression, and it has been reported

  upstream:

  https://bugs.freedesktop.org/show_bug.cgi?id=81136

  Problem:

  When I try to resume from hibernation the screen hangs and the GPU is
  locked. It cannot load the graphics properly.

  Testing:

  Unloading or blacklisting the nouveau driver and perform the following
  test, seems to indicate that  the problem is nouveau:

  # echo platform > /sys/power/disk
  # echo devices > /sys/power/pm_test
  # echo disk > /sys/power/state 

  Mainline:

  The problem seems to be fixed in latest stable mainline kernel, for now
  3.17.1-031701-generic (Utopic).

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.16.0-23-generic 3.16.0-23.31 [modified: boot/vmlinuz-3.16.0-23-generic]
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  nikos      1690 F.... pulseaudio
   /dev/snd/controlC1:  nikos      1690 F.... pulseaudio
   /dev/snd/controlC2:  nikos      1690 F.... pulseaudio
   /dev/snd/controlC0:  nikos      1690 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Oct 28 15:24:09 2014
  HibernationDevice: RESUME=UUID=f0688f3d-9938-4cb3-b79e-7c67f7593350
  InstallationDate: Installed on 2014-10-24 (4 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: MSI MS-7623
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=170bb898-7aa9-4678-8e80-58a445647f93 ro resume=/dev/disk/by-uuid/f0688f3d-9938-4cb3-b79e-7c67f7593350
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.138
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/06/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V17.9
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: 880GMA-E45 (MS-7623)
  dmi.board.vendor: MSI
  dmi.board.version: 3.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 3.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV17.9:bd12/06/2010:svnMSI:pnMS-7623:pvr3.0:rvnMSI:rn880GMA-E45(MS-7623):rvr3.0:cvnMSI:ct3:cvr3.0:
  dmi.product.name: MS-7623
  dmi.product.version: 3.0
  dmi.sys.vendor: MSI

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