[Bug 261989] USB Joystick disconnects every three seconds

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 261989] USB Joystick disconnects every three seconds"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 17 Feb 2022 11:39:17 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261989

--- Comment #5 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
First of all:

wPortChange=0x0001 means UPS_C_CONNECT_STATUS (/usr/include/dev/usb/usb.h)

Secondly at XHCI level (xHCI_Specification_for_USB.pdf) PORTSC section:

xhci_roothub_exec: port status=0x000202a0

CCS = 0 and PED = 0, there is no device connect.

That means the hardware itself reports no device present!

Can you try to compile multimedia/webcamd with input device support, and then
try to attach webcamd to the device?

I suspect the device itself is triggering this by changing the pullup/pulldown
values on D+ .

--HPS

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