Actually, the previous dmesg was from recent Tumbleweed x86_64 6.3.9-1-default [1]. When running on some Tumbleweed VM with 6.2.8-1-default, I don't see clocksource and tsc in dmesg either and it fails the same. There is actually no difference in dmesg between failing and passing test (only passing test has also unmount related messages, but that's not relevant). [1] https://openqa.opensuse.org/tests/3397531/file/serial0.txt