The GNOME Accessibility Daemon
In Ubuntu, the GNOME desktop environment is designed to be inclusive and usable by people with various physical or visual impairments. This functionality is largely driven by the gsd-a11y-settings (GNOME Settings Daemon Accessibility) plugin. This background service monitors the system to apply your chosen accessibility configurations, such as high-contrast themes, large text scaling, screen reader (Orca) integration, screen magnifiers, and specific keyboard behaviors like Sticky Keys or Slow Keys.
While this daemon is an absolutely vital piece of infrastructure for users who require assistive technologies, it is functionally useless if you do not use any accessibility features. If you are running a standard graphical desktop, or particularly if you are running a lightweight graphical session on a server or Virtual Machine purely to manage a few visual tools, this daemon simply consumes RAM in the background waiting for accessibility triggers that will never occur. You can safely disable this plugin to slightly optimize your system footprint.
How to Disable the Gsd-a11y-settings Service
Because this is a plugin loaded dynamically by the main GNOME Settings Daemon, you cannot disable it via a standard systemctl command. The most reliable way to stop it globally is to remove its execute permission.
Warning: Do not do this if you rely on screen readers, screen magnifiers, or special keyboard accessibility tools.
- Open your Ubuntu Terminal.
- Run the following command to strip the execute permission from the accessibility plugin binary:
sudo chmod -x /usr/libexec/gsd-a11y-settings(Note: On much older versions of Ubuntu, the binary may be located at /usr/lib/gnome-settings-daemon/gsd-a11y-settings).
- Log out of your GNOME session and log back in, or restart the computer entirely.
GNOME will no longer load the accessibility subsystem into memory upon login.