YASB high CPU usage when one monitor is disabled in a multi-monitor setup

[hcaginlenk]

I am reporting a persistent issue involving yasb and komorebi when switching my display configuration.

Description of the Issue:

When I move from a single-monitor setup (laptop screen only) to a single-external-monitor setup (laptop screen disabled, external monitor active), yasb does not correctly detect or communicate with the komorebi window manager.

Manifestation

• yasb becomes unresponsive.

• yasb process experiences unusually high CPU utilization.

Configuration Context

My komorebi setup is configured to handle both scenarios (laptop-only and external monitor-only). The error specifically occurs during the transition where the laptop's built-in display is deactivated, leaving only the external display active.

My yasb config is attached as .txt.

Thanks in advance for the help.
yasb_config_alternating_monitors.txt

[amnweb]

How can I reproduce this?
Which versions of Komorebi and YASB are you using?

[hcaginlenk]

If you have a multi monitor setup e.g. with a laptop and a monitor and configurations for those (yasb and komorebi)

• disable/turn off the laptop's built-in screen from Windows display settings, leaving only external display active.
• in my case when I observe the yasb process. yasb will typically stop updating, fail to recognize komorebi's state, and will show high CPU usage.

Versions:
YASB Reborn v1.8.3 (stable)
YASB-CLI v1.1.2

komorebic 0.1.38
tag:v0.1.38
commit_hash:ffa76ea2
build_time:2025-09-13 18:40:25 +00:00
build_env:rustc 1.89.0 (29483883e 2025-08-04),stable-x86_64-pc-windows-msvc

[amnweb]

I have two screens, but I can’t reproduce this when I turn one screen off/on.

2025-10-08.14-08-35.mp4

Is this related only to Komorebi, or do you have the same problem even without Komorebi when you connect/disconnect screens?

[Video-Nomad]

Just tested this on my setup (laptop with external screen via DP). No excessive CPU usage with or without Komorebi. Tried turning the screen on/off and also just pulling the DP cable out.

[hcaginlenk]

When I start YASB without Komorebi, YASB works normal. When I start komorebi, YASB stops responding and I have to terminate. Do you think it is related to my komorebi config? Is it possible to share the related parts of the config so I can double check?

Edited to add my komorebi config
komorebi.json

[amnweb]

I still can’t reproduce this with your configuration

[hcaginlenk]

I have just changed the scrolling layout to BSP and everything started to work normal. Anyways, scrolling layout was not working for me properly so I believe there may be something going on there. I had already opened an issue about this at komorebi.

Thank you to everyone who tried to reproduce the issue.