Systemd: Failed to Resolve Unit Specifiers in Require Specification for udiskie@$DISPLAY service

Introduction

This article provides a detailed explanation of the issue with the udiskie@$DISPLAY.service in systemd, which requires panel@$DISPLAY.service and fails to start with the X11@$Display.target and wantudiskieservice.panel.

Background

The udiskie@$DISPLAY.service is a systemd service that manages removable devices, such as USB drives, on which X11 is running. However, this service requires the panel@$DISPLAY.service to start properly. If it fails to start, it could be due to a missing dependency or incorrect configuration.

Issue

When the udiskie@$DISPLAY.service is started, it requires the panel@$DISPLAY.service to be running. However, if the X11@$Display.target is not enabled, the panel@$DISPLAY.service will not start, and the udiskie@$DISPLAY.service will fail to start as well. Additionally, if the wantudiskieservice.panel is not set to start with the X11 display, the udiskie@$DISPLAY.service will not start either.

Resolution

To resolve this issue, you need to ensure that the panel@$DISPLAY.service and X11@$Display.target are enabled and set to start with the X11 display. Additionally, you need to set the wantudiskieservice.panel to start with the X11 display.

Enabling the panel@$DISPLAY.service

To enable the panel@$DISPLAY.service, you need to run the following command:

Enabling the X11@$Display.target

To enable the X11@$Display.target, you need to run the following command:

Setting the wantudiskieservice.panel

To set the wantudiskieservice.panel to start with the X11 display, you need to add the following line to the /etc/X11/Xsession.d/90x11-common_start file:

In conclusion, the issue with the udiskie@$DISPLAY.service in systemd is caused by a missing dependency or incorrect configuration. To resolve this issue, you need to ensure that the panel@$DISPLAY.service and X11@$Display.target are enabled and set to start with the X11 display. Additionally, you need to set the wantudiskieservice.panel to start with the X11 display. By following these steps, you can ensure that the udiskie@$DISPLAY.service starts properly and manages removable devices on your X11 display.

• The udiskie@$DISPLAY.service is a systemd service that manages removable devices on X11 displays.
• The udiskie@$DISPLAY.service requires the panel@$DISPLAY.service to start properly.
• If the X11@$Display.target is not enabled, the panel@$DISPLAY.service will not start, and the udiskie@$DISPLAY.service will fail to start as well.
• To resolve this issue, you need to ensure that the panel@$DISPLAY.service and X11@$Display.target are enabled and set to start with the X11 display.
• Additionally, you need to set the wantudiskieservice.panel to start with the X11 display.

References

• udiskie - ArchWiki
• systemd.service - freedesktop.org
• systemd.target - freedesktop.org