Add parameters to the kernel. Inside /etc/default/grub (append CMDLINE DEFAULT):
1 | enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M |
Source:
- http://askubuntu.com/questions/244473/how-and-why-should-i-specify-mtrr-gran-size-mtrr-chunk-size
- https://wiki.ubuntu.com/Kernel/KernelBootParameters