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[shacharr <shacharr@xxxxxxxxx>]

Reverting the said commit (18442d0) fixes the issue for me too, allowing me to run (and successfully suspend and resume the computer) with kernel 2.13.0-30 (and the relevant patch applied)
I attach the patches needed to revert the said commit (some manual work was required, as git revert did not work cleanly). Note that this might break other i915 based devices (I do not know the internal details of the intel driver, I just fixed the revert to compile).

A prebuilt kernel package (64-bit version) that works for me is available from:
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-cloud-tools-3.13.0-30-generic_3.13.0-30.54_amd64.deb
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-headers-3.13.0-30_3.13.0-30.54_all.deb
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-headers-3.13.0-30-generic_3.13.0-30.54_amd64.deb
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-image-3.13.0-30-generic_3.13.0-30.54_amd64.deb
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-image-extra-3.13.0-30-generic_3.13.0-30.54_amd64.deb
https://dl.dropboxusercontent.com/u/3231403/InspironBugFix/linux-tools-3.13.0-30-generic_3.13.0-30.54_amd64.deb


** Patch added: "Revert patch"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331654/+attachment/4136218/+files/0001-Revert-drm-i915-Fix-port_clock-and-adjusted_mode.clo.patch

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https://bugs.launchpad.net/bugs/1331654

Title:
  [Dell Inspiron 1525] Cannot resume from suspend

Status in The Linux Kernel:
  Unknown
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Hello folks,

  After upgrading to Ubuntu Trusty (14.04), I cannot more resume from a
  previous suspend. All things were all right on 13.10.

  If I boot previous kernel 3.11.0-23, everything works well.

  Also I've tried these kernels:

  vanilla 3.13.0-rc1 (Bugged)
  vanilla 3.12.22 (Working)

  I also noted if I suspend from lightdm menu (on 3.13.0-rc1), I can
  resume after, but If I do this after logged with my user (not root), I
  am unable to resume from suspend.

  I cannot perform Sysrq magic keys, I can only press the power button.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-29-generic 3.13.0-29.53
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  iuri       2137 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Jun 18 15:22:53 2014
  HibernationDevice: RESUME=UUID=5dd061d0-fd44-4034-9107-63948dcd2c16
  InstallationDate: Installed on 2014-05-01 (48 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Inspiron 1525
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-29-generic root=UUID=a198f31e-440b-4f9b-87bb-d5e956fbe42f ro rootflags=subvol=@ locale=pt_BR quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-29-generic N/A
   linux-backports-modules-3.13.0-29-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/16/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A16
  dmi.board.name: 0D109D
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA16:bd10/16/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0D109D:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Inspiron 1525
  dmi.sys.vendor: Dell Inc.

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