Created attachment 165651 [details]
[ 1.293820] ACPI PCC probe failed.
Created attachment 165661 [details]
Unfortunately, the ACPI PCC author Ashwin Chaugule <firstname.lastname@example.org> didn't register on kernel bugzilla so we can't assign this bug to him. I suggest you sent him/her an email and CC linux-acpi mailing list about this problem.
BTW, please attach your acpidump, that would be useful:
# acpidump > acpidump.txt
Created attachment 166011 [details]
I can't boot into the system on 3.19 to get the acpidump as you suggest, but would doing it on 3.18 be ok?
Here is the dump (taken on 3.13): http://paste.debian.net/plainh/ac2bd14b/
my lspci -vvnn: http://paste.debian.net/plainh/1763f05a/
my dmesg: http://paste.debian.net/plainh/6eb7b5fa/
Sorry, I pasted here by mistake, I was meant to post in https://bugzilla.kernel.org/show_bug.cgi?id=93171
i can confirm that issue with the final 3.19 kernel (ubuntu vivid i386) running a q9550 cpu on an old mobo asus pw5dh (so maybe my hardware does not have the needed specs)
PCCT header not found.
ACPI PCC probe failed.
As I said, the ACPI PCC author Ashwin Chaugule <email@example.com> didn't register on kernel bugzilla so we can't assign this bug to him. Please write to him and cc linux-acpi mailing list about this problem. You can point him about this bug of course for the information you have provided.
I don't find a proper status for this bug so I'll just keep it as is.