Am Montag, den 21.09.2020, 15:59 +0200 schrieb Johan Hovold: > For interfaces that lack a union descriptor, probe for a > "combined-interface" before falling back to the call-management > descriptor instead of the other way round. Hi, the more I look at this the more it seems to me like the device that has the quirk does NOT have a collapsed interface but two interfaces and just a lack of a union descriptor. I am taking the original author into CC (hoping it still workd) Johan, would just taking the first three patches of the series work for now? Regards Oliver