https://bugzilla.kernel.org/show_bug.cgi?id=33722
Summary: s16 negative battery current quirk required for
Atom-based tablet PC
Product: ACPI
Version: 2.5
Kernel Version: 2.6.38.3
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Battery
AssignedTo: acpi_power-batt...@kernel-bugs.osdl.org
ReportedBy: theholyet...@googlemail.com
Regression: No
Created an attachment (id=54692)
--> (https://bugzilla.kernel.org/attachment.cgi?id=54692)
acpidump for this tablet
My Atom tablet PC reports ludicrous values for
/sys/class/power_supply/BAT0/current_now on AC power (65336000 µA, if I recall
the number correctly). This leads to gnome-power-manager claiming that the
machine has only 3 minutes of power left when first unplugged.
Commenting out 'dmi_name_in_vendors("Acer") &&' in acpi_battery_quirks() in
drivers/acpi/battery.c to force the quirk results in more sane current_now
values (around 200000) when on AC.
dmidecode and acpidump attached.
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