MacbookPro 8,2 booted in EFI mode reports the following ACPI related bug and warning messages: [ 0.273602] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored [ 2.320358] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 13.214077] ACPI Warning: SystemIO range 0x000000000000efa0-0x000000000000efbf conflicts with OpRegion 0x000000000000efa0-0x000000000000efa f (\_SB_.PCI0.SBUS.SMBI) (20140424/utaddress-258) [ 13.215423] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 13.299527] microcode: CPU0 sig=0x206a7, pf=0x10, revision=0x1a Hardware has latest firmware update from Apple. The main thing that concerns me is there are mcelog events due to high temps with minimal workloads. So at the moment I have minimal confidence I should even be running Linux on this hardware considering how hot it gets, how high the fans run, and how much the kernel seems to complain. [ 600.718678] rawhide.localdomain mcelog[939]: MCE 2 [ 600.719811] rawhide.localdomain mcelog[939]: CPU 6 THERMAL EVENT TSC b7ea03e138 [ 600.720928] rawhide.localdomain mcelog[939]: TIME 1404182780 Mon Jun 30 22:46:20 2014 [ 600.722102] rawhide.localdomain mcelog[939]: Processor 6 below trip temperature. Throttling disabled [ 600.723250] rawhide.localdomain mcelog[939]: STATUS 88010282 MCGSTATUS 0 [ 600.724393] rawhide.localdomain mcelog[939]: MCGCAP c09 APICID 5 SOCKETID 0 [ 600.725410] rawhide.localdomain mcelog[939]: CPUID Vendor Intel Family 6 Model 42 [ 600.726418] rawhide.localdomain mcelog[939]: Hardware event. This is not a software error.
Created attachment 141611 [details] journal journalctl -l -b -o short-monotonic
Created attachment 141621 [details] acpidump
Created attachment 141641 [details] dmidecode
Created attachment 141651 [details] dmesg
Created attachment 141661 [details] lspci
The overheating messages and mcelog messages are regressions since kernel 3.9.0, they didn't occur with 3.8 and older kernels. https://bugzilla.redhat.com/show_bug.cgi?id=924570
For the "[Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored" message, this just indicates a BIOS issue and we can ignore it. For the "PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug", this is just a kernel information message, which suggests user to file a bug if the current setting doesn't work and boot option "pci=nocrs" is needed. And for the ACPI warning message, you can also ignore it only if some thing does not work. For the overheating messages, I don't know why this is an regression because there is no code change between 3.4 and 3.11. But as the subject of this bug report does not reflect this, I suggest you to file a new bug report about the overheating message against Power/Thermal category and attach the output of "grep . /sys/class/thermal/*/*" and dmesg both in good (3.8) and bad kernel (3.9). Bug closed.