Arch Linux

nathanb

Member

Registered: 2011-11-28

Posts: 103

Website

External monitor does not turn back on when waking up

I have a Lenovo ThinkPad L460 connected via DisplayPort to a Lenovo ThinkVision monitor. I'm running Cinnamon on Arch Linux.

When Cinnamon puts my display to sleep, both monitors power down fine. But then when I touch a key or move the mouse, only the laptop's display turns on. When I unlock the computer, all my windows are on my laptop's screen. I have to turn the monitor off and then on again, at which point Cinnamon will detect the display again and let me move my windows back.

Is there a way to fix this problem, or do I just need to disable power management?

Drehstromlampe

Member

From: GER

Registered: 2015-07-18

Posts: 51

Re: External monitor does not turn back on when waking up

I'm running plasma5 on a notebook that has the same processor and therefore the same graphics card.
I do not have this issue. so I'm guessing it's an issue with cinnamon.

EDIT1
this may not be it I'm using the hdmi-output. so this may also be output-related.

Last edited by Drehstromlampe (2016-11-01 23:13:32)

nathanb

Member

Registered: 2011-11-28

Posts: 103

Website

Re: External monitor does not turn back on when waking up

Thanks for the data point! Could also be the monitor, I suppose.

I've temporarily worked around the issue by disabling power management entirely and just wasting a lot of electricity.