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I have fwup working and updating FW on recently released openSuSE 15.5. Perhaps you could boot to it from USB stick and try if that helps with fwup or/and the sound problem. That said, openSuSE 15.x is staying behind on old (2-ish years) kernels in order stay in sync with their enterprise linux kernels. That should not affect fwup service though. Suse says that they backport HW, and .... but, there is clear limit to what they can do. Not to distract from your current problem - as result of old kernel, I use Ubuntu on newer HW and openSuSE on older HW for familiarity, sentimentality and OS diversity reasons. So, perhaps you could also boot the latest Ubuntu fron USB stick and see if sound and fwup works there. Hope that it gives you some ideas. Tomas
