Hi Christopher,
I found the culprit and can confirm this is not a bug with the kernel
4.4.0.38. I attached a Sony PlayTV usb dvb tuner (dib0700) a little
while ago. I use it with TVHeadend which is installed as a background
service. After disconnecting it the system suspend/resume was working
perf
Btw I booted a livecd of Ubuntu 16.04.1 with kernel 4.4.0-31 and that
can sleep/resume fine. So the issue seems to be with 4.4.0-38, at least
with me.
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Hi Christopher,
I'm happy to re-attempt the 6 pm-test commands again but to be clear on
how the resume trace is generated can you please confirm if the steps
below will suffice?
sudo su
echo freezer > /sys/power/pm_test
exit
sudo sh -c "sync && echo 1 > /sys/power/pm_trace && pm-
Please provide the output of the following terminal command:
cat /sys/kernel/debug/suspend_stats
See attached file
** Attachment added: "suspend_stats"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629197/+attachment/4757919/+files/suspend_stats
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In answer to the first 3 questions:
1. Which part of the process does the issue occur with, the suspend to
ram, or resuming from? Instantly after suspend from gui or terminal is
issued.
2. Please advise how you suspended specifically. For example:
Executing at a terminal pm-suspend
Click
I've executed all the commands below and then attempted to create the
resume trace this command as per the instructions :
sudo sh -c "sync && echo 1 > /sys/power/pm_trace && pm-suspend"
As expected my system froze. Display stilled showed my X11 session with
browser and terminal open but the compu
While booted into the latest non-daily mainline kernel, execute at a
terminal:
cat /proc/acpi/wakeup > wakeup
See attached file.
** Attachment added: "wakeup"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629197/+attachment/4757918/+files/wakeup
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It may have been 4.4.0.31 but booting to that via grub showed the same
issue so i think it may a change in more than just the kernel that's
caused this. Please note the only kernels installed on my machine now
are 4.4.0.38. I went down a path of elimination a week ago trying to
determine which was
This issue didnt occur on an earlier kernel of never had an issue on
14.04 and an earlier kernel official of 16.04. I don't know which one.
I've only ever updated through the official ubuntu repos. After I
updated to kernel 4.4.0.38 I started having the suspend issue.
Trying to boot into all the o
Hi Christopher,
I installed the latest mainline upstream kernel 4.8.1
Still have the same issue.
nas@NAS:/tmp$ sudo dpkg -i *.deb
[sudo] password for nas:
Selecting previously unselected package linux-headers-4.8.1-040801.
(Reading database ... 400410 files and directories currently installed.)
Public bug reported:
I'm running a fresh installation of 16.04 running the latest updates.
When I `pm-suspend` the computer remains powered on but is completely
unresponsive. There is no signal going to my monitor and I can't enter a
tty shell or ctrl+alt+del to restart. I'm forced to press the t
I've also tried upgrading to kernel 4.6 as suggested in comment #58 and
still have the same problem.
$ uname -a
Linux NAS 4.6.0-040600-generic #201606100558 SMP Fri Jun 10 10:01:15 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
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I'm having the same issue as described in this bug.
$ uname -a
Linux NAS 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
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