Public bug reported:
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.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: resume suspend
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https://bugs.launchpad.net/bugs/1352886
Title:
Resume from suspend fails after a long sleep
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