FTR the system has been now running for 3 days just fine with these settings: BOOT_IMAGE=/boot/vmlinuz-5.3.18-lp152.85.gc6b9ae1-default root=UUID=54125a0f-3254-4609-9079-1ea01e4433d8 resume=/dev/disk/by-uuid/80e7c610-537c-4261-98ae-2ec8bcdc1d22 splash=silent quiet showopts slub_nomerge slub_debug=FU crashkernel=202M,high crashkernel=72M,low panic_on_oops=1