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[Owen <waldermort@xxxxxxxxx>]

Christopher, thanks for taking the time to respond. However, I have
since discovered the problem was related to an aging PSU.

This "bug" may be closed and marked as "not a bug".

Thanks.

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https://bugs.launchpad.net/bugs/1352886

Title:
  Resume from suspend fails after a long sleep

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I'm on Ubuntu Desktop 14.04 with the standard 13.13.0-32 kernel.

  The Suspend feature works, if the sleep is for a short time. For
  longer duration's, shortest I've seen is 90 minutes, the machine will
  not resume. When I say not resume, I mean the chassis fan LED will
  flash once and nothing powers up. Due to the time, it is very
  difficult to debug. From now on I am going to put the machine to sleep
  with the 'pm_trace' feature. Hopefully it will provide some useful
  feedback. I have not attempted to hibernate for a length of time,
  though I presume it to have the same problem.

  In addition to this problem, after a failed resume, the reset button
  and holding the power button does not work. I have to physically cut
  the power.

  Also, I installed the latest kernel, v3.16-rc7, but after logging on I
  had no Desktop (only the wallpaper) and the keyboard did nothing.
  Being new to linux I'm not sure how to do anything in text mode. I
  don't have the time to step back through each version. If somebody
  knows which version may work I can give it a try.

  I also tried installing the 14.10 Desktop, but that version consumed
  so much CPU it took 60 seconds to open a window and a full 20 minutes
  to shut down. The Live version also behaved this way but I went ahead
  and installed it anyway.

  A few notes about my system:

  Radeon HD6790 GPU. Problem Exists with both of their available drivers
  (this includes their beta driver stated as being 14.04 friendly). I
  cannot use the Ubuntu driver as the GPU fan runs at full speed and
  slows the system down.

  ASUS M4A78LT-LE mainboard, with latest 3.01 BIOS.

  2 Kingston 4GB DDR3 modules.

  I'm happy to perform a test and run any utilities, but like I said, I
  don't have the time to be downloading/installing version after version
  to find something that might work. The most recent pre-releases have
  not worked. The current stable version runs smoothly, except for the
  suspend issues.

  Update:
  Using the latest mainline kernel, although I'm not able to log into a Desktop Environment (they all crash), I am able to use the terminal (CTRL ALT F1). I have added ALL modules to /etc/default/acpi-support and the problem persists.
  The suspend command sudo sh -c "sync; echo 1 > /sys/power/pm_trace; pm-suspend" produced a Magic number but there was no accompanying "hash matches" line.

  The next step, and I need some help, is to modify the kernel as stated
  at https://wiki.ubuntu.com/Kernel/Reference/S3 by introducing some ASM
  feedback into arch/x86/kernel/acpi/wakeup_64.S. If anybody is willing
  to help, if anybody is even reading this, I would like to test using
  my current kernel 3.13.0 and it's targeted for AMD64.

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