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[Stanislav Kukla <stanislavkukla@xxxxxxxxx>]

Mr. Christopher,
I tested with 2 kernel versions:

3.2.66-030266-generic (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.66-precise/)
--> using this kernel, I was able to boot successfully and then intiated suspend. PC was suspended. But waking the PC by pressing any key on keyboard led to normal boot process instead of resume from suspend. I tried this 2 times - both times PC was suspended, but waking led to boot process instead of resuming from suspend. 

3.2.60-030260-generic (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.60-precise/)
--> using this kernel, I was able to boot successfully and then initiated suspend. PC was suspended. I was able to wake the PC and resume worked properly as well. I tested this 13 times and all tests were successfull. I only saw these error in dmesg (one entry per suspend):
[  162.537136] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  181.021083] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  210.186947] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  231.687493] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  246.578770] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  294.540121] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  319.081181] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  377.916508] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  389.471168] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  401.818031] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  414.748936] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  454.988862] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[  547.582342] [drm:pch_irq_handler] *ERROR* PCH poison interrupt

Maybe the erros listed above are not critical. But I can confirm using
older kernel 3.2.60-030260-generic in Ubuntu 14.10, what is similar
version of kernel used in Debian 7.7,  makes suspend work for my PC.
Unfortunately the graphic card performance is very poor with this
kernel, so I can't use this old kernel on daily purpose.



** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1412873

Title:
  Ubuntu 14.10 sometimes does not suspend

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,
  I have this issue since upgrading from ubuntu 13.10 to 14.04. The issue is still present even after upgrade to 14.10.
  The problem is that system sometimes does not suspend correctly. After initiating suspend the display is being turned off completely, HDDs are being stopped, but fan remains ON and the PC LED also stays on. The only possibility is to make hard reset using the HW button on the pc. Pressing power button will neither suspend/turn off computer nor turn in on again. I can reproduce this issue randomly - approximately 1 out of 5 suspends will fail. It looks first suspend after reboot will always work fine. Then some of the suspends after successfull resume will fail (randomly). I also tried fresh install of Ubuntu 14.10, but the suspend kept failing as well. 
  Checking /var/log/pm-suspend.log did not help me as there is always "performing suspend" message either after correct suspend or failed suspend.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-24-generic 3.16.0-24.32
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ygzo       5008 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Jan 20 17:34:22 2015
  HibernationDevice: RESUME=UUID=5c7a99f0-ca4d-4b61-bf3c-118fa145440d
  InstallationDate: Installed on 2014-04-18 (277 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. H61M-D2H
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=0cb350ba-8e96-4ac3-ac78-73547f8ada58 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-generic N/A
   linux-backports-modules-3.16.0-24-generic  N/A
   linux-firmware                             1.138
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-10-28 (84 days ago)
  dmi.bios.date: 05/18/2012
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F5
  dmi.board.name: H61M-D2H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF5:bd05/18/2012:svnGigabyteTechnologyCo.,Ltd.:pnH61M-D2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-D2H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: H61M-D2H
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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