Hot answers tagged intel
There are only four cores, but they are hyperthreaded, so should appear as 8 cores in things like the system-monitor cpu usage. Check your UEFI Settings (aka BIOS) for options to only use one thread per core. Your lscpu should show two threads per core, and system-monitor should graph 8 cpus.
I find the solution! I used Boot Repair to set acpi=off when loading the kernel. With apci=off ubuntu wasn't able to detect all the 8 cores. I removed acpi=off from kernel options and everything works well :)
Generally a system profits from more (virtual) CPU cores as it has more processing power at its disposal. An individual application may not profit as much from it, if it doesn't exploit parallel execution mechanisms, but even then other processes running at the same time (in the background which you may not even notice) could use the other cores instead of ...
It's recommended to install Ubuntu Server 14.04 LTS.... :)
Your graphics chipset only supports OpenGL 1.4, according to this post on Intel's forum. So you will not be able to use anything which requires a newer version of OpenGL on that GPU.
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