https://bugzilla.kernel.org/show_bug.cgi?id=156501
Bug ID: 156501
Summary: Battery state becomes unreadable
Product: ACPI
Version: 2.5
Kernel Version: 4.8-rc5
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: EC
Assignee: acpi...@kernel-bugs.osdl.org
Reporter: josemauricioforo...@gmail.com
Regression: No
Created attachment 232971
--> https://bugzilla.kernel.org/attachment.cgi?id=232971&action=edit
dmesg output of my last session with current mainline kernel
I get the following errors on my HP Envy m4-1015dx:
ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0.MMRD] (Node
ffff8802468b4f50), AE_AML_INFINITE_LOOP (20150930/psparse-542)
ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0.RDMB] (Node
ffff8802468b5938), AE_AML_INFINITE_LOOP (20150930/psparse-542)
ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0.RDMW] (Node
ffff8802468b5960), AE_AML_INFINITE_LOOP (20150930/psparse-542)
ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0.BAT0._BST] (Node
ffff8802468b54d8), AE_AML_INFINITE_LOOP (20150930/psparse-542)
After this I can't read battery state and every process that depends on it
fails, including upowerd, suspend, shutdown.
I can't find any trigger on dmesg, it always stays silent for many minutes
before this happens. It has happened after sessions lasting from 7 minutes up
to a couple of days, it never takes longer.
I have had this problem for as long as I have had Linux on this machine, which
goes from kernel 3.19 up to current mainline. Currently I use Ubuntu 16.04.1
LTS with Linux 4.8-rc5.
I already filed a bug report on launchpad for the Ubuntu maintainers where
there may be more information
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1615200)
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