I think I found at least a workaround: the strange behaviour disappears immediately, if I disable UAS, and use usb-storage for the externel USB drive. options usb-storage quirks=04e8:4001:u I am sure that UAS has been used with kernel 6.1, too, where it did not cause any issues... Ideas what is going wrong in kernel 6.6? I'd like to re-enable UAS, because UAS is about 200 MB/sec faster than usb-storage regards, Michael -- Michael Reinelt <michael@xxxxxxxxxxxxx> Ringsiedlung 75 A-8111 Gratwein-Straßengel +43 676 3079941
