(In reply to Peter Kirchge�ner from comment #111) > The kernel is working. But to me it seems that the AMD-microcode > update has not been been applied. That is correct. The microcode patch level installed by your BIOS (0x0100009f) is final in the sense that the microcode loader in Linux should not attempt to install newer and thus overwrite it. This is what this test kernel contains - a quirk list of microcode versions which should not be overwritten. So thanks for testing, I'll add your Tested-by tag to the patch.