doc: Extend tlp-service-type example.
* doc/guix.texi (Power Management Services): Demonstrate tlp-configuration usage. Suggested by rovanion on #guix.master
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@ -23626,17 +23626,17 @@ source is detected. More information can be found at
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@uref{https://linrunner.de/en/tlp/tlp.html, TLP home page}.
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@deffn {Scheme Variable} tlp-service-type
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The service type for the TLP tool. Its value should be a valid
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TLP configuration (see below). To use the default settings, simply
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write:
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The service type for the TLP tool. The default settings are optimised
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for battery life on most systems, but you can tweak them to your heart's
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content by adding a valid @code{tlp-configuration}:
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@lisp
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(service tlp-service-type)
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(service tlp-service-type
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(tlp-configuration
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(cpu-scaling-governor-on-ac (list "performance"))
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(sched-powersave-on-bat? #t)))
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@end lisp
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@end deffn
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By default TLP does not need much configuration but most TLP parameters
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can be tweaked using @code{tlp-configuration}.
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Each parameter definition is preceded by its type; for example,
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@samp{boolean foo} indicates that the @code{foo} parameter
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should be specified as a boolean. Types starting with
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