54 lines
2.5 KiB
Text
54 lines
2.5 KiB
Text
For install instructions, see "INSTALL" file.
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Usage:
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+-------------+
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|battery graph| <- visual percentage battery remaining
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|[:][=] [100%]| <- [:] - on AC (blink when charging) [=] - on battery
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|[00:00] [bX]| <- [00:00] time remaining [bX] battery being monitored.
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|status area| <- messages scroll here
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+-------------+
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see wmacpi -h for some command line switches
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**********************************************************************
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wmacpi is a dockapp ACPI battery monitor for modern kernels (ie,
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2.4.17 or later, and 2.6 kernels). Basically, it opens various files
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under /proc/acpi, reads status information from them, and then
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displays summaries.
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Version 1.99 and later provides full support for multiple batteries.
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You can tell it to monitor a particular battery with the -m option,
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which will display the percentage remaining and current status message
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for that battery. The time remaining and AC/battery status are global
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- the time remaining is calculated based on all batteries found on the
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system. When charging, the time displayed is the time remaining until
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the battery is fully charged - this only works sensibly if your ACPI
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system is implemented properly (far, far too many laptops have
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buggered ACPI implementations).
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The displayed time is averaged over 50 samples, each taken every three
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seconds (by default). This greatly improves the accuracy of the
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numbers - on my laptop, the time remaining seems to be overstated by a
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good hour or so if you only sample once compared to fifty times.
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Some ACPI implementations are stupid enough to block interrupts while
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reading status information from the battery over a slow bus - this
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means that on such b0rken laptops, running an ACPI battery monitor
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could affect interactivity. To provide a workaround for this, current
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versions of wmacpi supports setting the sample rate from the command
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line. The --sample-rate option specifies the number of times the
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battery is sampled every minute - the default is 20, and the maximum
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value is 600. Since -s 600 translates to sampling every 0.1 seconds,
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you really don't want to do that unless you're just having fun . . .
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Also provided is a command line tool to report the battery status. By
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default this will only sample once, but with the -a option you can
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specify a number. Be aware that it will try to take all those samples
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in the space of one second, so if your ACPI implementation is b0rken
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this could have adverse effects.
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Please report bugs to <wmaker-dev@googlegroups.com>
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Simon Fowler, 2007-07-13.
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