Hello, On this date - Sun, Sep 22, 2019 at 06:43:50PM +0100, Mick wrote: > On Sunday, 22 September 2019 18:06:50 BST Dom Rodriguez wrote: > > ... Of course, it _would_ help, if I had provided the link to the hub > > itself! > > > > https://www.amazon.co.uk/gp/product/B07919ZNB4 > > > > :) > > > > On this date - Sun, Sep 22, 2019 at 06:01:42PM +0100, Dom Rodriguez wrote: > > > Hello, > > > > > > I've got an Lenovo Thinkpad X270 laptop, with USB-C support. I ordered an > > > Lenovo USB-C hub from Amazon the other day, and it arrived today. It [the > > > hub] is recognised by the kernel for USB, but not for power delivery > > > (PD), via ACPI. > > > > > > Oddly enough, when I plug the USB-C cable from the mains adapter directly > > > to the USB-C port, ACPI recognises it fine - so I've narrowed it down to > > > a driver issue. > > I assume you have enabled the USB-C drivers in the kernel and also PCI > hotplug? > > https://wiki.gentoo.org/wiki/USB/Guide#USB_Type-C_and_Thunderbolt > > > > > I've tried using the hub on my Thinkpad 13" on both Windows and Linux > > > (Arch, specifically; Gentoo isn't on there at the moment.), and its > > > recognised fine. Therefore I do not believe the hub *itself* is faulty. > > > > > > In terms of diagnostic information, I'm not sure where to start, so if > > > anyone needs certain information to help with the issue, please let me > > > know, and I'll do my best to email it. > > > > > > I'm running gentoo-sources-5.3.1 for the kernel. > > > > > > Any ideas? Thanks :-) > > I don't have such a device to advise on the specifics, but look at dmesg, > lspci -knn, lsusb to see if the device is recognised, or if any errors on > missing components are reported. > -- > Regards, > Mick
Yeah, I've enabled the USB-C drivers in the kernel and enabled PCI hotplug as well. The device isn't recognised in `lspci` or `lsusb`. `lshw` on the other hand reports that 'pci:0', is unclaimed. "pci:1" appears to be the main PCI bridge for the laptop. Could well be that "pci:0" is the hub.. As far as I can see in `dmesg`, nothing there is reported either. A rather odd issue. -- Sincerely, Dom Rodriguez (shymega).
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