On Wed, Jan 24, 2018 at 08:39:10AM +0000, Mike Lothian wrote: > On Wed, 24 Jan 2018 at 04:07 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > On Tue, Jan 23, 2018 at 05:43:27PM +0000, Mike Lothian wrote: > > > On Tue, 23 Jan 2018 at 17:30 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > > > > > On Tue, Jan 23, 2018 at 05:12:03PM +0000, Mike Lothian wrote: > > > > > Hi > > > > > > > > > > I raised https://bugzilla.kernel.org/show_bug.cgi?id=198557 but was > > > > > informed by Greg bugs should be raised on the mailing list not in > > > > > bugzilla > > > > > > > > > > So USB-C devices only show up in dmesg or for use if they are > > > > > connected during boot > > > > > > > > > > Once booted and the device is disconnected the following message > > > > > appears in the dmesg: > > > > > > > > > > [ 100.814687] usb 3-1: USB disconnect, device number 3 > > > > > [ 100.882840] xhci_hcd 0000:39:00.0: xHCI host controller not > > > > > responding, assume dead > > > > > [ 100.882843] xhci_hcd 0000:39:00.0: HC died; cleaning up > > > > > > > > > > No further connections or disconnections display anything further in > > > > > the dmesg, the device works fine if connected via USB-A > > > > > > > > > > I've witnessed this behaviour since getting the laptop at the end of > > > > > 2015 so this isn't a regression > > > > > > > > Is there a BIOS update for the laptop? This has been seen a lot in the > > > > past on lots of different laptops but was always resolved by the BIOS > > > > update (the latest one for mine also updates the xhci controller as > > > > well.) > > > > > > > > thanks, > > > > > > > > greg k-h > > > > > > > > > Hi > > > > > > I've applied all BIOS updates for my laptop including the pulled one > > > for Spectre/Meltdown & ME bugs the other week > > > http://www.dell.com/support/home/uk/en/ukdhs1/product-support/servicetag/8k5w662/drivers > > > > > > If it helps, I don't have this issue in Windows but I rarely have it booted > > > > > > I thought it might have something to do with an ACPI failure (see bug > > > https://bugzilla.kernel.org/show_bug.cgi?id=198051) > > > > I can't see web links at the moment, but are you sure you have PCI > > hotplug enabled in your kernel? Same for ACPI PCI hotplug? That's how > > the controller usually shows up in the system, and that's a PCI issue, > > not a USB issue. > > > > thanks, > > > > greg k-h > > Hi > > PCI Hotplug and ACPI Hotplug are disabled on my system due to bug > https://bugzilla.kernel.org/show_bug.cgi?id=112121 where by my NVMe > drive would disappear from the system after suspend making my system > inoperable Ah, well that explains why this doesn't work, you need that in order to have the PCI device show back up again when you plug a device in. > I tried enabling PCI Hotplug, PCIE Hotplug and ACPI Hotplug - the > USB-C device still didn't appear when plugged in Really? No kernel messages at all when you plug a device in? > The suspend bug still remained and when trying with > CONFIG_ACPI_PCI_SLOT the whole system refused to boot (unable to find > systemd), I'm guessing the hard drive didn't enumerate It sounds like your machine has a lot of ACPI issues :( greg k-h -- 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
