06-08-2012
Replace the tiny battery (CMOS battery) for time and bios maintenance - not the big battery for the whole box. Save your BIOS config BEFORE you replace the battery.
I don't know squat about Sony, but this happens on other boxes when the little backup battery goes South. Example: you kept the notebook in the closet for a year, and decided to start using it again.
Tips for knowing when the CMOS battery is getting weak - by Iowaprodigal - Helium
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ACPI(1) General Commands Manual ACPI(1)
NAME
acpi - Shows battery status information
SYNOPSIS
acpi [options]
DESCRIPTION
acpi Shows information from the /proc filesystem, such as battery status or thermal information.
This manual page was written for the Debian distribution because the original program does not have a manual page.
OPTIONS
-b | --battery
show battery information
-B | --without-battery
suppress battery information
-t | --thermal
show thermal information
-T | --without-thermal
suppress thermal information
-a | --ac-adapter
show ac adapter information
-A | --without-ac-adapter
suppress ac-adapter information
-V | --everything
show every device, overrides above options
-s | --show-empty
show non-operational devices
-S | --hide-empty
hide non-operational devices
-c | --celcius
use celcius as the temperature unit
-f | --fahrenheit
use fahrenheit as the temperature unit
-k | --kelvin
use kelvin as the temperature unit
-d | --directory <dir>
path to ACPI info (/proc/acpi)
-h | --help
display help and exit
-v | --version
output version information and exit
AUTHOR
This manual page was written by Paul Telford <pxt@debian.org> for the Debian system (but may be used by others). Permission is granted to
copy, distribute and/or modify this document under the terms of the GNU GPL.
ACPI(1)