Folks at Plugable: FYI, the email thread, if you are interested. Neither your USB3 hub nor anybody else's works with a fairly recent Linux kernel. Given that I have used two different hubs with the same result, I am a bit surprised this has not surfaced before. Anyway: > Here's a link: https://marc.info/?t=150498668400001&r=1&w=2 On Thu, Sep 14, 2017 at 7:35 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 13 Sep 2017, Bruce Korb wrote: > >> > This raises some questions: >> > >> > Can you eliminate the switch entirely as the cause? Yes. I bypassed the switch and have the problem. Further, I can say that the problem is the USB 3.0 hub driver logic. By plugging the hub/switch combo into a USB 2.0 port, it all works. By plugging the hub directly into a USB 3.0 port, the keyboard works but the mouse does not. So, it is definitely a USB 3.0 hub/ driver interaction that is causing the mouse to not work. And, no, I do not have a USB 2.0 hub. (A USB 1.1, if I haven't thrown it out, but I think I did.) > Or buggy firmware. Or a bug in the kernel driver. > >> > What >> > happens if you plug the mouse into the USB-3 hub and plug the >> > hub directly into the computer (bypass the switch)? Answered above: with or without the switch, the behavior is the same. > No, you can't do it using only the computer, no matter what operating > system or software you run. The computer can only tell you what data > it gets over the wire; it can't tell you what's happening in the > stretch of wire between the hub and the mouse. For that you need a USB > bus analyzer. Unless someone loans me one, I have none. Regards, Bruce -- 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
