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Fix for throttling #2

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@bob1de

Hello,

Thanks for sharing your experience with T490s! I've got the i7-16G German campus model and really dislike the keyboards build quality. The Alt key was cracking when pressed from the beginning and dust gets easily under the keys. I had a HP EliteBook 840 G1 before, which was a lot better in this regard. Also disappointing that you can't replace the keyboard without replacing the whole palm rest and sides as well. Hopefully they'll do it under on-site warranty when it should become necessary some day, but that can get quite expensive I fear since you need to disassemble the whole mainboard. Crazy ones who designed this layout.

But anyway, it's well possible to disable the software-caused throttling on this model as well. CPU power usage then stays at 25W until thermal throttling kicks in at 95°C, which happens quite quickly because of the terrible, single heatpipe. It stabilizes at 17-18W after some minutes, as that's what the cooling system can dissipate.

You have to set the correct UUID for intels thermal platform:
erpalma/throttled#118

Just run this immediately after boot, e.g. via systemd unit or /etc/rc.local:

# echo 63BE270F-1C11-48FD-A6F7-3AF253FF3E2D | tee /sys/devices/platform/INT3400:00/uuids/current_uuid

Best regards
Robert

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