Encountering the same on Ubuntu 16.04, kernel 4.6.0-040600-generic Running on a Dell XPS 9550, bios version 1.2.19
The following errors occur in /var/log/syslog when the AC adapter is plugged in/out:
Feb 11 15:49:58 xenon kernel: [31200.587332] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.CHRG] Namespace lookup failure, AE_NOT_FOUND (20160108/psargs-359) Feb 11 15:49:58 xenon kernel: [31200.587349] ACPI Error: Method parse/execution failed [\PNOT] (Node ffff88089d0db8e8), AE_NOT_FOUND (20160108/psparse-542) Feb 11 15:49:58 xenon kernel: [31200.587359] ACPI Error: Method parse/execution failed [\_SB.AC._PSR] (Node ffff88089d0ee6e0), AE_NOT_FOUND (20160108/psparse-542) Feb 11 15:49:58 xenon kernel: [31200.587369] ACPI Exception: AE_NOT_FOUND, Error reading AC Adapter state (20160108/ac-128)
Encountering the same on Ubuntu 16.04, kernel 4.6.0-040600- generic
Running on a Dell XPS 9550, bios version 1.2.19
The following errors occur in /var/log/syslog when the AC adapter is plugged in/out:
Feb 11 15:49:58 xenon kernel: [31200.587332] ACPI Error: [\_SB_. PCI0.LPCB. H_EC.CHRG] Namespace lookup failure, AE_NOT_FOUND (20160108/ psargs- 359) psparse- 542) psparse- 542)
Feb 11 15:49:58 xenon kernel: [31200.587349] ACPI Error: Method parse/execution failed [\PNOT] (Node ffff88089d0db8e8), AE_NOT_FOUND (20160108/
Feb 11 15:49:58 xenon kernel: [31200.587359] ACPI Error: Method parse/execution failed [\_SB.AC._PSR] (Node ffff88089d0ee6e0), AE_NOT_FOUND (20160108/
Feb 11 15:49:58 xenon kernel: [31200.587369] ACPI Exception: AE_NOT_FOUND, Error reading AC Adapter state (20160108/ac-128)