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** Package changed: ubuntu => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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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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