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#1 2016-08-15 09:12:39

amuttsch
Member
Registered: 2016-08-15
Posts: 6

Can't wake up monitor once dpms put it into sleep

Hi,

since a few days I cannot wake up my monitors (notebook + DisplayPort connected monitor) using my mouse or keyboard. It is possible to wake them up using CTRL+ALT+F2 and CTRL+ALT+F1. I have checked the

journalctl

and xorg log files, but no errors or other useful information is in there.

I can reproduce this issue by typing

xset dpms force off

, typing

xset dpms force on

afterwards doesn't wake up the monitors. No messages are printed.

I have the latest kernel (4.7-1), using xServer and i3wm. If you need more information please tell me.

What can I do to further analyse this issue and fix it?

Thanks!

Last edited by amuttsch (2016-08-15 09:14:58)

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#2 2016-08-16 06:22:36

jchillerup
Member
From: Denmark
Registered: 2011-08-10
Posts: 19

Re: Can't wake up monitor once dpms put it into sleep

I have this issue, too, and I suspect a lot of the suspend/resume threads that's on the Kernel & Hardware forum front page relate to this bug.

FWIW: I'm on a Lenovo X1 Carbon 1st gen, using Gnome, but I suspect this bug to be on a chipset level (maybe it only affects Intel?). I will try downgrading my kernel and see how it goes.

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#3 2016-08-16 08:12:24

amuttsch
Member
Registered: 2016-08-15
Posts: 6

Re: Can't wake up monitor once dpms put it into sleep

Okay, please report if downgrading solves the issue, thanks!

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#4 2016-08-16 13:05:57

jchillerup
Member
From: Denmark
Registered: 2011-08-10
Posts: 19

Re: Can't wake up monitor once dpms put it into sleep

Didn't get around to doing that, but it seems switching to TTY1 was a workaround. Simply press Ctrl+Alt+F1 when the machine appears dead.

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#5 2016-08-18 16:38:55

amuttsch
Member
Registered: 2016-08-15
Posts: 6

Re: Can't wake up monitor once dpms put it into sleep

I downgraded the kernel to 4.6.4 and waking up the monitor works again. So this is a kernel issue. Where should we report this?

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#6 2016-08-19 13:08:37

mcloaked
Member
From: Yorkshire, UK
Registered: 2012-02-02
Posts: 1,104

Re: Can't wake up monitor once dpms put it into sleep

amuttsch wrote:

I downgraded the kernel to 4.6.4 and waking up the monitor works again. So this is a kernel issue. Where should we report this?

https://bugzilla.kernel.org/ ?


Mike C

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#7 2016-08-21 09:08:43

amuttsch
Member
Registered: 2016-08-15
Posts: 6

Re: Can't wake up monitor once dpms put it into sleep

Kernel 4.7.1 fixed this issue.

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#8 2016-10-26 08:10:24

nonZero
Member
Registered: 2015-05-17
Posts: 51

Re: Can't wake up monitor once dpms put it into sleep

I am running 4.8.4 and still suffer from this, with gnome ( https://bbs.archlinux.org/viewtopic.php … 7#p1664567 ).
Any suggestion?

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#9 2016-11-22 21:36:05

emilhuseynli
Member
Registered: 2016-11-22
Posts: 1

Re: Can't wake up monitor once dpms put it into sleep

I also had this problem, but guess I have managed to solve it now. Intel graphics driver DRI3 was the issue: https://wiki.archlinux.org/index.php/in … RI3_issues

nonZero wrote:

I am running 4.8.4 and still suffer from this, with gnome ( https://bbs.archlinux.org/viewtopic.php … 7#p1664567 ).
Any suggestion?

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#10 2016-11-23 22:04:41

nonZero
Member
Registered: 2015-05-17
Posts: 51

Re: Can't wake up monitor once dpms put it into sleep

Thank you!

I can confirm that after falling back to DRI2,

sleep 1 && xset dpms force standby && sleep 8 && xset dpms force on

works correctly.

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#11 2016-12-03 08:25:56

bryan.paradis
Member
Registered: 2016-10-22
Posts: 43

Re: Can't wake up monitor once dpms put it into sleep

nonZero wrote:

Thank you!

I can confirm that after falling back to DRI2,

sleep 1 && xset dpms force standby && sleep 8 && xset dpms force on

works correctly.

Confirming as well. DRI 3 was causing problems for me in 4.8

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