Comment # 1 on bug 1126480 from Takashi Iwai

The attachment missing?

Just to be sure, could you test with the kernel in OBS Kernel:openSUSE-15.1
repo?  The kernel bundled in the image is still old.  I don't believe it'll fix
much, but better to confirm at first.

If the problem persists with the latest Leap 15.1 kernel, please check the
recent upstream kernel in OBS Kernel:stable repo.  Or you can try even 5.0
kernel in OBS Kernel:HEAD repo.  If this works better, there is still some hope
to get it fixed.