On Seg, 2014-08-04 at 16:37 -0600, Chris Murphy wrote:
Starting with kernel 3.9, I get frequent messages "CPU5: Package
temperature above threshold, cpu clock throttled" followed by "CPU5: Package
temperature/speed normal" and occasionally:
kernel: mce: [Hardware Error]: Machine check events logged
mcelog[581]: Hardware event. This is not a software error.
This happens on three different Mac models, each running OS X and Fedora. They all get
way hotter, run fans much faster, running Linux than OS X. I've had one of those
models die inexplicably while it was exceptionally hot, but since it can't be booted
at all now I can't say whether there's cause-effect or it's just coincidence.
Since I'm down to just one Mac at the moment, I'm reluctant to do any further
baremetal Linux testing until I better understand what these messages mean.
https://bugzilla.redhat.com/show_bug.cgi?id=924570 ## my original bug on this from over
a year ago
https://bugzilla.redhat.com/show_bug.cgi?id=1050106 ## recent bug that has different
diagnostic info
In 2006 mcelog has very useful to me because shows up that was an
hardware problem and mcelog reports just happens when something is going
really bad, like message says "hardware problem" software can't fix it.
These problems should be reported upstream , reading the bug reports,
cpu throttling and very hot computer could be an acpi problem , so
http://vger.kernel.org/vger-lists.html#linux-acpi is where you could
find some answers.
Best regards,
--
Sérgio M. B.