It says in How many maximum CPUs does Ubuntu support by default? that there is a maximum number of 8 cores supported by default in Ubuntu 12.04 Desktop/Server 32-Bit. What is the way to increase the maximum number of cores from the default of 8 to a higher value, like 12?
The reason I ask is because I have just built a machine with 6 hyper threading cores. There were issues installing the 64-bit version of the software from a CD (it "panicked" and crashed several times). The 32-bit installed with no problem, but I only see 8 of the 12 cores. The BIOS is fine. If I turn hyper-threading off and reboot, I see 6 cores as expected.
I am nervous to try and compile a kernal, I am still new to all of this. Is there a config setting somewhere that I should change?