CachyOS Apps

sched-ext Manager on CachyOS: install, first run, settings and fixes

Simple GUI for managing sched-ext schedulers via scx_loader.

From the official CachyOS repo. Install with pacman, no AUR helper needed.

Written from the sources listed at the end · Nov 2, 2026 · sched-ext Manager app page, reviews and trust score

Install sched-ext Manager with pacman

  1. Install scx-manager from the official cachyos repo. pacman checks the package signature before it installs.
    sudo pacman -S scx-manager

First run

  1. Open SCX Manager from your app menu. It is a standalone GUI derived from the CachyOS Kernel Manager that manages sched-ext schedulers through scx_loader. It needs a working polkit agent.
  2. Check which scheduler is active, then pick a scheduler and a profile: Auto, Gaming, Power save, Low Latency or Server.

Key settings

  1. Set extra flags for the chosen scheduler, or turn the current scheduler off. When a sched-ext scheduler stops, the default kernel scheduler takes over again.
  2. To see the flags a scheduler accepts, run it with --help.
    scx_bpfland --help
  3. The same controls exist on the command line through scxctl from scx-tools. For example, start scx_flash in Gaming mode:
    scxctl start --sched flash --mode gaming
  4. With the CachyOS power-profiles-daemon, switching power profiles changes the scheduler profile: Power Saver to Power Save, Balanced to Auto, Performance to Gaming.

Common fixes

A scheduler stalls or crashes

The wiki names ananicy-cpp as a common cause. Try turning it off as a troubleshooting step.

systemctl disable --now ananicy-cpp

Check what scx_loader is doing

See the service status, or the logs of the current boot.

journalctl -u scx_loader.service -b 0

scx_loader starts but does nothing

Do not run scx_loader.service alongside the old scx.service. Switch to scx_loader only:

systemctl disable --now scx.service && systemctl enable --now scx_loader.service

A scheduler other users mention is missing

It may only be in the bleeding edge scx-scheds-git package, or not merged yet.

Uninstall sched-ext Manager

  1. Remove scx-manager and the dependencies nothing else needs.
    sudo pacman -Rns scx-manager

Sources