Comment 11 for bug 1520965

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Henrique de Moraes Holschuh (hmh) wrote :

Please make sure you are running the latest UEFI firmware from Lenovo. I didn't check this, but there might be a newer one:

Your CPU microcode is outdated. Intel microcode updates fix a lot more than just CPU microcode, they can also workaround or fix some issues with other circuits inside the processor package, such as the power management controllers, interconnects, etc.

Please install the "intel-microcode" package, version 3.20151106.1 or later, and reboot to activate it. It contains microcode 0x22 for your CPU, which should be reported in /proc/cpuinfo.