On Sat, Aug 29, 2015 at 12:17:25AM +0200, Steinar H. Gunderson wrote: > I've noticed (with the CONFIG_PM=y kernel) that sometimes this comes up when > inserting the device: > > [ 136.370917] usb 3-2: Set SEL for device-initiated U2 failed. > > I don't know if it's relevant. I've also noticed these started coming now, although I'm not sure if they are related; I see DMAR is mentioned, so it might be related to the fact that I gave the device to KVM (via VT-d) a bit earlier in the same boot (although qemu was long shut down by this point): [ 8240.586544] DMAR: DRHD: handling fault status reg 3 [ 8240.586560] DMAR: DMAR:[DMA Write] Request device [00:14.0] fault addr ffef0000 DMAR:[fault reason 05] PTE Write access is not set [ 8240.586665] DMAR: DRHD: handling fault status reg 3 [ 8240.586678] DMAR: DMAR:[DMA Write] Request device [00:14.0] fault addr ffee8000 DMAR:[fault reason 05] PTE Write access is not set [ 8240.586792] DMAR: DRHD: handling fault status reg 3 [ 8240.586803] DMAR: DMAR:[DMA Write] Request device [00:14.0] fault addr ffee0000 DMAR:[fault reason 05] PTE Write access is not set [ 8240.586813] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 6 comp_code 13 [ 8240.586824] xhci_hcd 0000:00:14.0: Looking for event-dma 00000000fff5cf40 trb-start 00000000ffa86520 trb-end 00000000ffa86520 seg-start 00000000ffa86000 seg-end 00000000ffa86ff0 [ 8240.586839] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 6 comp_code 13 [ 8240.586847] xhci_hcd 0000:00:14.0: Looking for event-dma 00000000fff5cf50 trb-start 00000000ffa86520 trb-end 00000000ffa86520 seg-start 00000000ffa86000 seg-end 00000000ffa86ff0 /* Steinar */ -- Homepage: http://www.sesse.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html