[ISSUE] lxqt-powermanagement doesn't dim the screen nor turn off the monitor when idle timer is supposed to run out

[voiduser123321 <voiduser123321@users.noreply.github.com>]

[-- Attachment #1: Type: text/plain, Size: 1330 bytes --]

New issue by voiduser123321 on void-packages repository

https://github.com/void-linux/void-packages/issues/48265

Description:
### Is this a new report?

Yes

### System Info

Void 6.6.10_1 x86_64 GenuineIntel uptodate rrFFFF

### Package(s) Affected

lxqt-powermanagement-1.4.0_1

### Does a report exist for this bug with the project's home (upstream) and/or another distro?

_No response_

### Expected behaviour

Lxqt-powermanagement is supposed to turn off the screen and change the backlight brightness after time specified in "AC Idle time" and "Enable Backlight Change -> Idle time" respectively has passed.

### Actual behaviour

Lxqt-powermanagement never turns off the screen nor changes backlight brightness even when all these options are enabled. However, "Check backlight" button in "Power Management Settings" works as intended. Also, there is no battery icon in system tray.

### Steps to reproduce

1. Go to "LXQt Settings" -> "Session Settings" -> "Basic Settings"
2. Enable "Power Management" in "LXQt Modules" and log out and login back if disabled
3. Go to "LXQt Settings" -> "Power Management" -> "Idle"
4. Enable "Idleness Watcher" and set "When idle on AC" and "AC Idle time" as desired
5. Enable "Backlight Change" and set backlight percentage and "Idle time" as desired
6. Wait for specified time