SMT is set to AUTO in the bios v 3.2
if I boot to windows 10, I see 16 logical units
secure boot is disabled / never was enabled in bios
but in kubuntu 19.04
cat /sys/devices/system/cpu/smt/active
0
lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 43 bits physical, 48 bits virtual
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 8
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 1
Model name: AMD Ryzen 7 1700X Eight-Core Processor
Stepping: 1
CPU MHz: 1972.547
CPU max MHz: 3700.0000
CPU min MHz: 2200.0000
BogoMIPS: 7400.04
Virtualization: AMD-V
L1d cache: 32K
L1i cache: 64K
L2 cache: 512K
L3 cache: 8192K
NUMA node0 CPU(s): 0-7
htop only shows 8
i am not sure how to enable it
there are no
noht
in grub that i can find
tried
sudo echo on > /sys/devices/system/cpu/smt/control
but
bash: /sys/devices/system/cpu/smt/control: Permission denied
cat /sys/devices/system/cpu/smt/control
notsupported
everything else works fine.
not sure what else to try, kind of at the end of what I could google.
ASRock won’t talk to you about linux problems. At least me anyway…
any ideas would be appreciated
thanks