This article describes how to disable the laptop screen on Lenovo
Thinkpads. This saves a lot of power and enhances your privacy. Root
privileges required. Tested with a Thinkpad T450 on Debian Stretch.
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Calendars and address books contain sensitive data. It is therefore
advisable not to upload them to the cloud. To keep the datasets
synchronized between multiple devices nonetheless, you need to operate
your own calendar and address book server.
This article first covers the setup of the calendar and address book
server and then presents calendar and address book applications for the
Linux console and the Android operating system.
The article was last updated on August 13, 2025.
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