Ubuntu
linux package

  1. Bug #1430625
  2. Comment #15

Comment 15 for bug 1430625

Revision history for this message
Colin Ian King (colin-king) wrote :

PCC (Platform Communication Channel) is a recent ACPI 5.0 addition. The driver does not find a PCC communications mailbox and just exits with that error message. It is not something to worry about, most machines don't have an ACPI PCCT table and they don't use this mechanism.

References:

ACPI specification Chapter 14.0 "Platform Communications Channel"
Linux source: drivers/mailbox/pcc.c