Boot Error - ACPI PCC Probe Failed

ACPI PCC Probe Failed is the error that pops up instead of the default GRUB loader after I updated my kernel to 3.19.

I searched around and couldn't find much information except that it is a known error and it is registered in kernel.org's launchpad https://bugzilla.kernel.org/show_bug.cgi?id=92551. My question is, is anyone else facing it?, what are the impacts of this? And if only an update in the future can fix it, any suggestions or safety tips till then?

Apparently it is a harmless message related to a 'PCC' driver:

So it looks like you build the PCC mailbox driver which is new in 3.19-rc and that driver fails to load, because it doesn't find hardware to work with.

The message is harmless, but it also is not useful. The driver in question seems to be overly verbose to me in general.

That is what I gleaned from this conversation.

ACPI PPC probe failed. is related to a new ACPI interface PCC (Platform Communication Channel), which is defined by UEFI.

You may see this in your output of journalctl:

$ sudo journalctl
Aug 16 23:10:55 x kernel: **PCCT header not found.**
Aug 16 23:10:55 x kernel: **ACPI PCC probe failed.**

These are the returns if the code does not find the ACPI interface which only some very new devices have or if it actually fails to read/write to the interface if it is present. The code was written for upstream releases. If you read the emails in the filed bugs below you will find information that supports my statements and you can read the return messages in the code itself in the GitHub link above.

http://permalink.gmane.org/gmane.linux.power-management.general/56400 http://comments.gmane.org/gmane.linux.acpi.devel/73411

I hope this helps to clarify some things.