5.7.x and below are fine since years, but the current kernel let the CPU idle at minimal freq.
t44 ~ # lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 39 bits physical, 48 bits virtual
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 69
Model name: Intel(R) Core(TM) i5-4300U CPU @ 1.90GHz
Stepping: 1
CPU MHz: 798.132
CPU max MHz: 2900.0000
CPU min MHz: 800.0000
BogoMIPS: 4988.30
The .config is attached.
--
Toralf