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.
[ 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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