Arch Linux

hxss

Member

Registered: 2017-10-17

Posts: 34

[solved] light-locker resumes with black screen after hibernation

I use xfce, lightdm, light-locker, upower, logind. When system resumes from hibernation I see black screen until I move cursor/press any key. Is it possible to wake up system in ready to go state with switched-on display?
Similar behavior I see when lock xfce with light-locker - screen immediately goes black. Maybe its possible to show login form for 10 sec after lock?

BUT! When system resumes from suspend, lightdm shows login form without extra actions from user. This is more intuitive - when I resume system, I'm going to login and work, not to watching black screen.

Last edited by hxss (2022-01-17 21:40:45)

hxss

Member

Registered: 2017-10-17

Posts: 34

Re: [solved] light-locker resumes with black screen after hibernation

Found that `systemctl hibernate|suspend` or suspend by lid closing activates display on resume. Meanwhile suspend/hibernate from xfce menu leads to black screen on resume. So this is xfce specific issue.
Here how 'black screen' actually looks:
1. laptop vendor logo on uefi loading
2. switched on empty black display (kernel `quiet` parameter)
3. lightdm's cursor shows for a sec
4. display switches off completely(power off)
--. move mouse/press any key activates display again

So If you're not attentive enough, you just don't notice when the system is ready for entering password.

hxss

Member

Registered: 2017-10-17

Posts: 34

Re: [solved] light-locker resumes with black screen after hibernation

found solution

Last edited by hxss (2022-01-17 21:38:25)