I have the unfortunate problem that my Lenovo X260 freezes with Kernel 5.1 and 5.2.
It has the 6200U Processor with HT enabled and 1.44 BIOS from 08.05.2019. The RAM was tested with Memtest and seems ok. I don't have a dedicated GPU.
The freezes occur in irregular intervals and last from a few seconds up to a total freeze requiring a hard reset. The problem does not occur with Kernel 4.19. I have no idea about the Kernel or how to diagnose the problem.
Any help in that matter is greatly appreciated!