Smallest cores disabled after Ubuntu install

#1

Hi,

After installing “Ubuntu 24.10”, the 4 smallest cores are no longer available.
Is this expected and if there is way to enable these in ubuntu?

lscpu -e
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ
0 0 0 0 0:0:0:0 yes 2500.0000 800.0000 800.0000
1 0 0 1 0:0:0:0 yes 2300.0000 800.0000 1205.0000
2 0 0 2 0:0:0:0 yes 2300.0000 800.0000 1205.0000
3 0 0 3 0:0:0:0 yes 2200.0000 800.0000 842.0000
4 0 0 4 0:0:0:0 yes 2200.0000 800.0000 842.0000
5 0 0 5 0:0:0:0 yes 2400.0000 800.0000 816.0000
6 0 0 6 0:0:0:0 yes 2400.0000 800.0000 816.0000
7 0 0 7 0:0:0:0 yes 2500.0000 800.0000 800.0000

Thanks

#2

Did you update to the “version 9” CIX firmware too? That disables the small cores because their presence currently breaks Windows, and I assume they needed Windows working for the certification that firmware was released to obtain.