https://bugzilla.kernel.org/show_bug.cgi?id=44161
Summary: ACPI does not seem to reflect charging/discharging
status for the battery correctly.
Product: ACPI
Version: 2.5
Kernel Version: 3.4.4-3.fc17.x86_64
Platform: All
OS/Version: Linux
Tree: Fedora
Status: NEW
Severity: high
Priority: P1
Component: Power-Battery
AssignedTo: acpi_power-batt...@kernel-bugs.osdl.org
ReportedBy: em...@loriholden.com
Regression: No
While the power supply device (ADP1) seems to always understand when the cord
is plugged in and removed, the battery (BAT1) does not seem to know when it is
discharging or not.
Samsung Series 9 np900x4b with Fedora 17
$ uname -a
Linux Lethe 3.4.4-3.fc17.x86_64 #1 SMP Tue Jun 26 20:54:56 UTC 2012 x86_64
x86_64 x86_64 GNU/Linux
(Results of acpi -i -b -a)
*** AC PLUGGED IN ***
Battery 0: Full, 100%
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: on-line
*** AC REMOVED ***
Battery 0: Charging, 100%, until charged
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: off-line
*** System Suspended and woken back up ***
*** AC STILL REMOVED ***
Battery 0: Discharging, 100%, 06:33:49 remaining
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: off-line
*** AC PLUGGED IN ***
Battery 0: Unknown, 98%
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: on-line
*** SUSPEND AND WAKE ***
*** AC PLUGGED IN ***
Battery 0: Unknown, 98%
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: on-line
*** AC REMOVED ***
Battery 0: Charging, 98%, charging at zero rate - will never fully charge.
Battery 0: design capacity 8400 mAh, last full capacity 8500 mAh = 100%
Adapter 0: off-line
The same information is reflected when looking directly at the sysfs enteries.
/sys/class/power_supply/ADP1/online shows the correct status all the time. (1
for online, 0 offline)
/sys/class/power_supply/BAT1/status will show the correct status after a fresh
suspend, reflecting the above results.
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