If power-profiles-daemon detects degraded system performance, the reason for the degradation will be present here.

If the system has a performance profile.

If this property is false, your system does not have a performance profile known to power-profiles-daemon.

Power profile holds created by other applications.

This property returns a powerProfileHold object, which has the following properties.

• profile - The PowerProfile held by the application.
• applicationId - A string identifying the application
• reason - The reason the application has given for holding the profile.

Applications may “hold” a power profile in place for their lifetime, such as a game holding Performance mode or a system daemon holding Power Saver mode when reaching a battery threshold. If the user selects a different profile explicitly (e.g. by setting profile) all holds will be removed.

Multiple applications may hold a power profile, however if multiple applications request profiles than PowerSaver will win over Performance. Only Performance and PowerSaver profiles may be held.

The current power profile.

This property may be set to change the system’s power profile, however it cannot be set to Performance unless hasPerformanceProfile is true.