Using 64 bit machine, core i7 5500u, ubuntu 14.04 LTS shows only 2 cores

Question

I recently bought a HP ProBook 430 G2 with core i7 5500u processor. I upgraded the 4 GB RAM to 8 GB. In windows 4 cores are being shown however when I type

sudo dmidecode

I am shown this : Core Count: 2, Core Enabled 2, Thread Count 2

Is there any way I can use all the cores ?

score 3 · Answer 1 · answered Oct 07 '15 at 08:05

Your CPU the Intel Core i7 5500U has 2 cores 4 threads by design.

The number of threads also are referred to as "virtual cores".

To see that your CPU performs hyperthreading see ht in the flags section from dmidecode. To work appropriately it needs to be set to enabled in your BIOS.

Using 64 bit machine, core i7 5500u, ubuntu 14.04 LTS shows only 2 cores

1 Answers1