Jeff Miller, the issue you are reporting is an upstream one. Could you
please report this problem to the appropriate mailing list (linux-pm) by
following the instructions verbatim at
https://wiki.ubuntu.com/Bugs/Upstream/kernel ?
Please provide a direct URL to your e-mail to the mailing list once
Jeff Miller, could you please provide the missing information following
https://wiki.ubuntu.com/DebuggingKernelSuspend ?
** Tags added: latest-bios-1.32
** Tags added: trusty
** Tags added: kernel-bug-exists-upstream-4.1
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
--
I followed the instructions with the kernel that was suggested
previously. This process is the same as previously as well.
I open a terminal
sudo -s
echo 1 /sys/power/pm_trace
pm-suspend
Press the power button, and the monitor fails to come back from resume.
I am unable to SSH in when it is in
** Attachment added: resmue-trace dmesg.out - after a failed boot
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1467691/+attachment/4420007/+files/dmesg.out
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** Attachment added: /proc/version for latestd resume-trace test
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1467691/+attachment/4420008/+files/version.out
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** Description changed:
To reproduce this bug I go to the shell as root and execute pm-suspend.
Suspend to RAM fails to wake up on my HP dc7800p. After suspending with
pm-suspend an attempt to wake the machine up with the power button leads to a
black screen. The video card does not appear
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.1
I tested this with the latest upstream kernel and confirmed it is still
a bug.
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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I installed from the 4.1-unstable link you provided.
cat /proc/version:
Linux version 4.1.0-040100-generic (kernel@gomeisa) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201506220235 SMP Mon Jun 22 06:36:19
UTC 2015
It failed to wake up from the suspend.
I have attached the dmesg output
I confirmed that it still exhibits a successful pm-suspend immediately
after a successful pm-hibernate.
I am attaching the dmesg immediately after the pm-hibernate/resume/pm-
suspend/resume sequence.
** Attachment added: dmesg output after a hibernate/resume/suspend/resume
sequence
This did not start happening after an upgrade. I have only tested this
15.04 and the 14.04 versions of ubuntu and they exhibit the issue. I
have not tested or used other versions of ubuntu.
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I did a pm-suspend with pm_trace and attached is the dmesg output.
It appears to have something after the magic value:
[2.496316] Magic number: 0:800:178
[2.496317] hash matches
/home/kernel/COD/linux/drivers/base/power/main.c:1063
[2.496390] acpi device:0e: hash matches
[
That should be modprobe i915.
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https://bugs.launchpad.net/bugs/1467691
Title:
[HP Compaq dc7800p Small Form Factor PC] suspend/resume failure
To manage notifications about this bug
I performed some tests by booting into single user mode with single on
the grub line.
I tested, just a single invocation each of the following s2ram commands:
s2ram -f : fail
s2ram -f -a 1 : ok
s2ram -f -a 2 : fail - monitor powers on but gives a non optimal mode
floating dialog from the
If I boot into single user mode, modprobe i195, and attempt the same
steps I am unable to get s2ram to work.
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https://bugs.launchpad.net/bugs/1467691
Title:
[HP Compaq dc7800p Small
I get a response from ping when it is in the stuck state but I cannot
SSH into the machine.
** Description changed:
- Suspend to RAM fails to wake up on my HP dc7800p. After suspending with
- pm-suspend an attempt to wake the machine up with the power button leads
- to a black screen. The video
The attached dmesg output was taken after the reboot from a failed attempt.
For that failed attempt I had previously set /sys/power/pm_trace to 1.
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The system, using the 4.1 kernel above, does not hang when I use pm_test
core option (as well as any other test option in that file):
echo core /sys/power/pm_test
echo 1 /sys/power/pm_trace
dm-suspend
This seems to work and it resumes properly.
** Attachment added: dmesg.out
I installed the upstream kernel build from http://kernel.ubuntu.com
/~kernel-ppa/mainline/v4.1-rc2-vivid/ version
4.1.0-040100rc2-generic_4.1.0-040100rc2.201505032335_amd64
Attached is the /proc/acpi/wakeups file
** Attachment added: wakeup
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