Hello,
I recently bought a new Thinkpad X270 (i7 7500U) and put Mint 18 on it. I
have been running it with an external monitor with the lid closed, and I
noticed I had a ton of scary temperature related messages in dmesg. They
happen immediately after I close the lid, and about every 5 minutes if I
leave it closed. The weird thing is that it idles around 45-55C which is
perfectly normal for a laptop. I haven't seen a single temperature spike
when this happens. I can also max out the processor encoding video and it
will hover around 80C with no temperature warnings at all.
Below is chunk of dmesg lines right after I close the lid (notice it says
the CPU is over the threshold and .01 seconds later it's allegedly under
the threshold again.) I'm running the 4.8 kernel right now. It seems to do
the same thing with the mainline kernel (4.11) except the "mce" events
don't happen anymore. I'm also running BIOS 1.11 if that matters. I
upgraded from the default BIOS in hopes that it would fix this, but it
doesn't seem to have done anything.
Does anyone have any ideas about what could be causing this? It seems like
something about the lid being closed causes it not to be able to read the
temperature sensors properly, unless the CPU temperature really spikes
enough to be throttled and cools back down to idle temperatures in less
than .01 seconds.
[ 4325.800141] thinkpad_acpi: unknown possible thermal alarm or keyboard
event received
[ 4325.800146] thinkpad_acpi: unhandled HKEY event 0x6032
[ 4325.800149] thinkpad_acpi: please report the conditions when this event
happened to ibm-acpi-devel@lists.sourceforge.net
[ 4325.949784] CPU0: Core temperature above threshold, cpu clock throttled
(total events = 1)
[ 4325.949785] CPU2: Core temperature above threshold, cpu clock throttled
(total events = 1)
[ 4325.949786] CPU1: Package temperature above threshold, cpu clock
throttled (total events = 1)
[ 4325.949787] CPU3: Package temperature above threshold, cpu clock
throttled (total events = 1)
[ 4325.949789] CPU2: Package temperature above threshold, cpu clock
throttled (total events = 1)
[ 4325.949792] CPU0: Package temperature above threshold, cpu clock
throttled (total events = 1)
[ 4325.949793] mce: [Hardware Error]: Machine check events logged
[ 4325.949794] mce: [Hardware Error]: Machine check events logged
[ 4325.954773] CPU2: Core temperature/speed normal
[ 4325.954773] CPU0: Core temperature/speed normal
[ 4325.954774] CPU1: Package temperature/speed normal
[ 4325.954774] CPU3: Package temperature/speed normal
[ 4325.954775] CPU0: Package temperature/speed normal
[ 4325.954776] CPU2: Package temperature/speed normal
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