Screen goes off (black) until I suspend and resume the system, how can I run a command to reboot screen without suspend?

[7-up]

I have Linux mint 18.3 Sylvia

My screen goes off (black) until I suspend and resume the system, While everything is working fine (keyboard mouse audio..etc) just the screen is black. I odnt know how to solve this issue!!

so I thought what if I use a command to reboot the screen without suspending the system and have a shortcut for it on the command, is it possible to do this? and how?

Thanks

[Larry78723]

Go to Menu - Preferences - Screensaver and uncheck activate screensaver when computer is idle.

[7-up]

Go to Menu - Preferences - Screensaver and uncheck activate screensaver when computer is idle.

I don't think this is the issue, I have a hunch that it is hardware related but not sure (i hope not).
However, I did this just now, I will test and reply back with results if the screen will go off again or not.
thank you so much.

[Larry78723]

I hope that takes care of it.

[I2k4]

The Screen Saver is certainly one dimmer, on by default - there are also several Power Manager settings that might be set to turn off / lock the screen.

You don't mention the Desktop Environment: in Cinnamon there is a handy taskbar applet called "Inhibit" that can toggle power management off so nothing automatically shuts off (rt-click taskbar and add applets from the list). In Cinnamon and XFCE you can go through the Power Manager settings to look at the various settings and time outs to configure them. (Not familiar with Mate.)

[7-up]

The Screen Saver is certainly one dimmer, on by default - there are also several Power Manager settings that might be set to turn off / lock the screen.

You don't mention the Desktop Environment: in Cinnamon there is a handy taskbar applet called "Inhibit" that can toggle power management off so nothing automatically shuts off (rt-click taskbar and add applets from the list). In Cinnamon and XFCE you can go through the Power Manager settings to look at the various settings and time outs to configure them. (Not familiar with Mate.)

Thanks, I did add it and activate it.

unfortunately, the sccren went off I again today while inhibt was active too.
I think it is a hardware issue since I searched the issue and my laptop ( Asus n550jk) users have the same problem, so to fix it I have to close the lid off to suspend it then reopen it again to wake the screen up.
so, is it possible to have the command as a shortcut in the keyboard? I think this will temporary solve it.

thanks

[I2k4]

I use this on a bedroom laptop to toggle the screen without suspending, in order to play audio with the screen off:

Super-Z Toggle Screen Off
sh -c 'sleep 0.3 && xset dpms force off'

The same key (set whatever you like) combination both darkens and relights the screen, without suspending - just tested on Cinnamon and it works - Keyboard / Shortcuts tab / Custom Shortcuts

(Just to be clear about "active" Inhibit, the "Power Management" toggle should be OFF to keep the screen on, by disabling the timed dimmers. It works on my Cinnamon installs, but as you say it might be your PC - I'd wonder if there's a BIOS setting that might control it.) Hope it's helpful.

[7-up]

I use this on a bedroom laptop to toggle the screen without suspending, in order to play audio with the screen off:

Super-Z Toggle Screen Off
sh -c 'sleep 0.3 && xset dpms force off'

The same key (set whatever you like) combination both darkens and relights the screen, without suspending - just tested on Cinnamon and it works - Keyboard / Shortcuts tab / Custom Shortcuts

(Just to be clear about "active" Inhibit, the "Power Management" toggle should be OFF to keep the screen on, by disabling the timed dimmers. It works on my Cinnamon installs, but as you say it might be your PC - I'd wonder if there's a BIOS setting that might control it.) Hope it's helpful.

Did this and just tested it now after my screen went off and it works!!
I know eventually, I have to fix it since it is not a big of an issue from what I have seen ( https://www.youtube.com/watch?v=-LBNKFeuJxc&t=6s)
But this will do for the time being!!
Thank you so much, sir

[I2k4]

Glad it works. From the video, it really looks like a design problem with the little cable, surprising any software fix works. Good luck.