https://bugzilla.kernel.org/show_bug.cgi?id=54621
Summary: Kernel doesn't produce any power related uevents on HP
Folio 13-2000
Product: ACPI
Version: 2.5
Kernel Version: 3.7.9
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: pub...@stefan-nagy.at
Regression: No
No matter if I'm on battery (discharging) or have the ac adapter plugged in
(charging), if I'm plugging the ac adapter in or out – I don't see any power
related uevents from the kernel with 'udevadm monitor' or 'udevadm monitor
--kernel'. I also tried to change the logging priority of udevadm with 'udevadm
control --log-priority=debug' – without any luck.
Since the kernel sends no power related uevents, UPower doesn't update the
status of the ac adapter (un/plugged). The value 'Updated' for device
/org/freedesktop/UPower/devices/line_power_ACAD reported by UPower will always
be similar to uptime, no matter how long that is and how often I un/plugged the
ac adapter in the meantime. When I booted with the ac adapter plugged in and at
some point I plug it out and decided to work on battery my notebook will never
be sent into hibernation because UPower thinks the ac adapter is still plugged
in. I guess UPower expects an uevent from the kernel.
However, UPower seems to force an update of the battery status every 30 seconds
(UPowerd tells me: 'No updates on supply
/org/freedesktop/UPower/devices/battery_BAT1 for 30 seconds; forcing update'),
so the charging level reported by the battery status applet in GNOME
corresponds to the reported value in /sys/class/power_supply/BAT1/uevent
(POWER_SUPPLY_CAPACITY).
I'm sorry for opening this bug report while #54241 is still open, but it seems
to me that these are two separate issues. Feel free to close one of those two
bugs, if you think that this symptoms are caused by the same bug. You'll find
relevant log files at #54241, please tell me if you need more information.
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