Hi, I get the following errors on my HP Envy m4-1015dx with Insyde F.18 BIOS and the mainline kernel (4.8-rc5), after which battery state becomes unreadable: 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) This makes every process that depends on reading battery state hang (upowerd, suspend, shutdown). I can't find any trigger as dmesg stays silent for several minutes before this happens. It has happened after sessions lasting from 7 minutes up to a couple of days, it never takes longer. I've had this problem for as long as I have Linux on this machine, which goes from kernel 3.19 up to current mainline. If anyone wants to check the acpidump, you may find it here (https://dl.dropboxusercontent.com/u/109420370/acpidump.txt) I previously filed a bug report for the Ubuntu maintainers where you might find more information (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1615200) Hope somebody can take a look at this, it's made Linux very unreliable for me for a long time. Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html