On 28.01.2014 14:10, Suvayu Ali wrote:
On Mon, Jan 27, 2014 at 03:50:53PM +0100, poma wrote:
> On 27.01.2014 14:46, Suvayu Ali wrote:
> …
>> How do I debug this? How can I get more information why the resume
>> fails? Thanks for any ideas.
>
> First check S3/resume without X11,
> # systemctl set-default multi-user.target
> # systemctl isolate multi-user.target
> # systemctl suspend
> # dmesg -> ACPI & PM
Same problem, can't resume. Have to force a reboot.
# grep CONFIG_PM_DEBUG /boot/config-$(uname -r)
CONFIG_PM_DEBUG=y
# cat /sys/power/pm_test
[none] core processors platform devices freezer
# echo core > /sys/power/pm_test
# cat /sys/power/pm_test
none [core] processors platform devices freezer
# dmesg > dmesg_before-S3-core; echo mem > /sys/power/state; dmesg >
dmesg_after-resume-core
# echo processors > /sys/power/pm_test
# cat /sys/power/pm_test
none core [processors] platform devices freezer
# dmesg > dmesg_before-S3-procs; echo mem > /sys/power/state; dmesg >
dmesg_after-resume-procs
# echo devices > /sys/power/pm_test
# cat /sys/power/pm_test
none core processors platform [devices] freezer
# dmesg > dmesg_before-S3-devices; echo mem > /sys/power/state; dmesg >
dmesg_after-resume-devices
poma
Ref.
Debugging hibernation and suspend
https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt
S3/s2ram
https://www.kernel.org/doc/Documentation/power/s2ram.txt
kernel.org - docs/power
https://kernel.org/doc/Documentation/power/
How to debug suspend-resume issues
https://01.org/linuxgraphics/documentation/how-debug-suspend-resume-issues-0