[SOLVED] Battery charge percentage reports as 0% in xmobar

Question

I have an ASUS U36JC laptop running Arch. I'm using xmobar to display information about the battery charge.
The estimated remaining lifetime in hours reports correctly, but the charge percentage always reports at 0%.
The charge level is reported correctly by acpi:
$ acpi
Battery 0: Discharging, 69%, 03:24:48 remaining
Listing /sys/class/power_supply/BAT0 gives:
$ ls /sys/class/power_supply/BAT0
alarm device energy_full_design manufacturer power present status technology uevent voltage_now
cycle_count energy_full energy_now model_name power_now serial_number subsystem type voltage_min_design
The contents of uevent are:
$ cat uevent
POWER_SUPPLY_NAME=BAT0
POWER_SUPPLY_STATUS=Discharging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=14880000
POWER_SUPPLY_VOLTAGE_NOW=15529000
POWER_SUPPLY_POWER_NOW=16335000
POWER_SUPPLY_ENERGY_FULL_DESIGN=84000000
POWER_SUPPLY_ENERGY_FULL=81750000
POWER_SUPPLY_ENERGY_NOW=54600000
POWER_SUPPLY_MODEL_NAME=U36--56
POWER_SUPPLY_MANUFACTURER=ASUSTek
POWER_SUPPLY_SERIAL_NUMBER=
And my xmobarrc is:
Config { font = "-misc-fixed-*-*-*-*-10-*-*-*-*-*-*-*"
, bgColor = "black"
, fgColor = "grey"
, position = Top
, lowerOnStart = True
, commands = [ Run Network "eth0" ["-L","0","-H","32","-n","green","-h","red"] 10
, Run Cpu ["-L","3","-H","50","-n","green","-h","red"] 10
, Run CpuFreq ["-t","<cpu0>"] 10
, Run Battery ["-t","<left>% / <timeleft>","-L","50","-H","75","-h","green","-n","yell","-l","red"] 10
, Run ThermalZone 0 ["-t","<temp> C","-L","40","-H","79","-h","red","-n","yellow","-l","green"] 10
, Run Memory ["-t","<usedratio>%"] 10
, Run Swap ["-t","<usedratio>%"] 10
, Run Date "%a %_d/%m %H:%M" "date" 10
, Run StdinReader
, sepChar = "%"
, alignSep = "}{"
, template = "%StdinReader% }{ %cpu% / %cpufreq% | M %memory% * S %swap% | %eth0% | %battery% ; %thermal0% | <fc=#ee9a00>%date%</fc>"
Thanks,
Last edited by maw09 (2012-02-08 05:29:47)

Answer 1

maw09 wrote:
Listing /sys/class/power_supply/BAT0 gives:
$ ls /sys/class/power_supply/BAT0
alarm device energy_full_design manufacturer power present status technology uevent voltage_now
cycle_count energy_full energy_now model_name power_now serial_number subsystem type voltage_min_design
Try adding -c "energy_full" to the battery plugin args.
You can also add -f "/sys/class/power_supply/AC0/online" if you don't have proper AC status in xmobar.
http://projects.haskell.org/xmobar/#sys … or-plugins