[SOLVED] /sys/class/power_supply/BAT0 reads 0 for all power files

I'm on a Macbook 2,1 running Arch and just recently noticed that my conky started showing 2 billion % for my battery's charge. Conky simply uses:
${battery_percent BAT0}%
In any case, I've manually dug around as well in /sys/class/power_supply before to figure things out and in doing so found:
]$ ls /sys/class/power_supply/BAT0
alarm energy_now present type
cycle_count manufacturer serial_number uevent
device model_name status voltage_min_design
energy_full power subsystem voltage_now
energy_full_design power_now technology
$ cat /sys/class/power_supply/BAT0/energy_full
0
$ cat /sys/class/power_supply/BAT0/energy_now
0
$ cat /sys/class/power_supply/BAT0/power_now
0
$ cat /sys/class/power_supply/BAT0/present
1
$ cat /sys/class/power_supply/BAT0/status
Discharging
$ cat /sys/class/power_supply/BAT0/voltage_now
0
These use to contain non-zero values such that (energy_now/energy_full)=% charge.
Any suggestions on how to figure out what happened?
Last edited by jwhendy (2012-01-18 04:49:57)

@ManitOu:
-- Using ${battery BAT0) gives me [charging], so it must be looking at /sys/class/power_supply/status.
-- I didn't have acpid installed. I don't consider the battery an "event," but could be wrong. My read of the wiki is that acpid handles buttons and lid events and the like. This is simply looking for how much battery power I have. I installed acpid and started the daemon. There doesn't seem to be a change in /sys/class files or in conky's output. Do I need to restart after adding it to rc.conf for it to take effect?

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[SOLVED] /sys/class/power_supply/BAT0 reads 0 for all power files

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