Hi Jack, On Tue, Mar 15, 2016 at 12:29:09PM -0500, Bjorn Helgaas wrote: > On Fri, Feb 26, 2016 at 07:10:03PM +1100, Jack Coulter wrote: > > I'm attempting to use the Thunderbolt 3 (which has a USB Type-C > > connector) port on my laptop, a Dell XPS 15 (9550). The external device > > I'm attempting to use is a gigabit ethernet + USB 3.0 hub, of an unknown > > / generic brand, but bears model number KY-688 if that's of any use. > > > > When the device is present at system startup, everything works > > correctly, and shows up in lspci as a USB controller, which lsusb shows > > having a hub and ethernet NIC attached, which the r8152 driver binds and > > uses without issue: [...] > > > > However, if the device is connected after the system boots (or > > disconnected and reconnected), it is not detected at all. No messages > > show up in dmesg upon connection and no additional devices show up in > > the output of lspci & lsusb. Strangely enough, USB devices connected to > > the external hub do still receive power. > > I don't know much about Thunderbolt. But since it appears as a PCI > device, I would expect some sort of hotplug notification when you > attach the hub. If pciehp handles hotplug, it looks like we should > see something from pcie_isr() in the dmesg log. Try booting with: pcie_hp=nomsi This is needed with the Light Ridge controller built into 2011/2012 Macs to receive hotplug notifications. Best regards, Lukas -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
