Hmm, then I have no idea what leads to the noisy output. You can try to downgrade the kernel to Leap 15.2 GM kernel and verify whether the problem is reproduced with that old kernel. I suppose running like below (as root) will install that kernel: zypper install --oldpackage kernel-default-5.3.18-lp152.19.2 After that, reboot, choose this kernel in GRUB menu, boot with it and retest. Check the running kernel version by the command uname -r