Complementary PowerMAN features
Consider using the following additional options to improve results:
- Default Policy – The power policy that applies at all times to all users unless a more
specific policy is applicable. This policy allows a common standard to be quickly implemented.
- No User Policy – It is often possible to use a more aggressive power management strategy
when nobody is logged on. PowerMAN allows a distinct policy to be defined for this situation.
- Logout Policy – Sometime operating environments (such as school or university computer
rooms) have a very high turn-over of users. It would be inappropriate to enable an idle policy,
whilst a user was logged on, in such environments as this may result in a computer being
locked for subsequent users.
A logout policy can be used in combination with the No User policy to ensure that the user is
not logged on before the appropriate idle action occurs. This approach can also benefit
usability because it allows Sleep or Hibernate to be configured as the idle action when no
user is logged on which means the system can become available again to the next user in a
- Policy Enforcement – Sometimes the installed software may prevent the computer from
becoming idle. As noted elsewhere in the documentation there are numerous legitimate
reasons for this (such as a Microsoft Office PowerPoint slide show) where this is desirable.
Unfortunately this can also happen when not intended and can result a significant additional
amount of energy waste. If this appears to happen the policy enforcement feature may be
used to configure an additional time, after the last user input, after which the idle action will
be forced. Policy enforcement is enabled by default in PowerMAN v5.2 and later.
- Scheduled Power Management – Alternatively, the scheduled shutdown/sleep/hibernate
policy may be used as a „catch-all‟ policy to ensure that systems are shutdown or configured
to use less energy at certain times of the day. This approach can prove very effective where
the usage pattern is predictable.
- Policy Preferences Feature – This feature allows users to participate in the power
management strategy by selecting a policy from a menu provided by the system
administrator. Whilst the options available are controlled by the system administrator this
approach can increase user acceptance by offering users some degree of autonomy. PowerMAN Policy
Preferences are available in release v5.2 and later.