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I have a Toshiba Satellite L300 dual core laptop. Due to some problem I need to disable one core. How to do this in Ubuntu 12.10?

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1 Answer 1

To do it dynamically, try (as root):

echo 0 > /sys/devices/system/cpu/cpu1/online

(or cpu0 to disable the first core)

To disable one core during boot use maxcpus=1 kernel parameter.

Alternatively, poke around your BIOS, maybe an option in there.

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