Hi Mika, > We are able to reproduce the issue and it was root caused to be missing > UNSET_INBOUND_SBTX port operation during retimer enumeration. I posted a > series of fixes few minutes ago (with you Cc'd) and one of them should > fix this issue: > > https://lore.kernel.org/linux-usb/20230306113605.46137-3-mika.westerberg@xxxxxxxxxxxxxxx/ That's great news, thank you! I'll apply this patch to a 6.1.15 kernel and give it a try. Could take a day or two, though, beacause I don't have the hardware here at the moment. I'll let you know. Thanks and best regards, Christian