mrtoth/kde-lockscreen-suspend-display
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Hybernates your display after entering the lockscreen on KDE.
35 Commits 1 Branch 0 Tags 71 KiB
Go 62.6%
C 35%
Shell 2.4%
0ce211b46d
Go to file
Kristóf Tóth 0ce211b46d Use the XLib DPMS extension from C wrappers instead of subprocess calls
2021-10-24 14:12:22 +02:00
afterlock Explain keypress sleep debouncing in hybernateDisplayLoop 2020-09-08 16:14:34 +02:00
cmd/after-lock Use Xlib code to find a keyboard instead of relying on user config 2021-10-22 15:15:52 +02:00
config Add poc to parse config from env. Should refactor (famous last words) 2021-10-16 22:39:47 +02:00
lockfile Rename package 2020-09-08 16:32:55 +02:00
xdg Use the XLib DPMS extension from C wrappers instead of subprocess calls 2021-10-24 14:12:22 +02:00
.gitignore Add .gitignore 2020-08-18 11:07:40 +02:00
go.mod Rename package 2020-09-08 16:32:55 +02:00
proof-of-concept.sh Initial commit. Add poc hack script 2020-08-17 12:28:52 +02:00
README.md Rename package 2020-09-08 16:32:55 +02:00

README.md

KDE Lockscreen Suspend Display (KDE LSD)

What?

KDE Plasma (as of 5.19.4) lacks the funcionality of hybernating your display after locking your computer.

This hack implements Gnome-like lockscreen behaviour: it hybernates your display after a given timeout if the computer is locked. It also makes sure that the display won't turn off while you are typing your password to unlock your machine.

How?

This whole started as a simple bash script (proof-of-concept.sh) using qdbus and xset to implement this functionality. However, it had an annoying defect: the screen would hybernate after the timeout no matter what (i.e. the display could turn off while you were typing your password to unlock the machine). To remedy this defect I've decided to monitor keypresses via /dev/input and rewrite the whole thing in golang to provide proper debouncing (i.e. the timeout resets if you start typing).

Beware this is a quick&dirty hack. Instead of calling qdbus and xset from golang, proper dbus bindings should be used. Instead of registering a go binary to execute once the lockscreen is active (System Settings -> Notifications -> Application Settings -> Screen Saver), the whole thing should probably be rewritten in C++ and contributed to KDE.