Arch Linux

Kotrfa

Member

Registered: 2012-10-25

Posts: 213

[SOLVED] Cannot wake up from suspend Thinkpad t460s

Hey,

my problem is easy - when I use

systemctl suspend

the laptop is suspended and the power button is slowly flashing as expected. But it is not possible to wake the laptop up - the button just don't wake it up, nor lid switch close/open. I have to push the power button to turn the laptop off and start again. I tried to disable TLP, but it didn't help.

journalctl is quite useless:

Oct 08 11:52:36 think460s systemd[1]: Reached target Sleep.
Oct 08 11:52:36 think460s systemd[1]: Starting Suspend...
Oct 08 11:52:36 think460s polkitd[780]: Unregistered Authentication Agent for unix-process:776:3572 (system bus name :1.28, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disco
Oct 08 11:52:36 think460s systemd-sleep[788]: Suspending system...
-- Reboot --
Oct 08 11:56:59 think460s kernel: random: get_random_bytes called from start_kernel+0x42/0x4b7 with crng_init=0
Oct 08 11:56:59 think460s kernel: Linux version 4.13.4-1-ARCH (builduser@tobias) (gcc version 7.2.0 (GCC)) #1 SMP PREEMPT Thu Sep 28 08:39:52 CEST 2017

I found that someone had a bit similar problem here, but without any solution (https://bbs.archlinux.org/viewtopic.php?id=224648). The difference is that in my case it is a consistent behaviour, not random.

thanks

Last edited by Kotrfa (2017-10-08 20:18:51)

xsmile

Member

Registered: 2012-03-31

Posts: 31

Re: [SOLVED] Cannot wake up from suspend Thinkpad t460s

See https://bbs.archlinux.org/viewtopic.php?id=230156, look for the intel_iommu kernel parameter.

Kotrfa

Member

Registered: 2012-10-25

Posts: 213

Re: [SOLVED] Cannot wake up from suspend Thinkpad t460s

Thanks, that seem to solve the issue. I will start a new thread with the shutdown issue.