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Date:      Mon, 14 Jul 2025 21:57:01 +0000
From:      bugzilla-noreply@freebsd.org
To:        usb@FreeBSD.org
Subject:   [Bug 254974] Corsair K95 RGB PLATINUM gaming keyboard not working
Message-ID:  <bug-254974-19105-fSKzozzKoU@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-254974-19105@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254974

Jordan Gordeev <jgopensource@proton.me> changed:

           What    |Removed                     |Added
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                 CC|                            |jgopensource@proton.me

--- Comment #37 from Jordan Gordeev <jgopensource@proton.me> ---
(In reply to Loïc Bartoletti from comment #36)

For the trackball problem please open a separate PR.

For the Corsair keyboard, what Vladimir was referring to is probably this code
in sys/dev/usb/input/ukbd.c:
        if (hid_is_keyboard(d_ptr, d_len)) {
                if (hid_is_mouse(d_ptr, d_len)) {
                        /*
                         * NOTE: We currently don't support USB mouse
                         * and USB keyboard on the same USB endpoint.
                         * Let "ums" driver win.
                         */
                        error = ENXIO;

This is a limitation of the older ukbd(4) driver.

What you can try is adding these to /boot/loader.conf:
usbhid_load="YES"
hw.usb.usbhid.enable="1"

After you reboot, the keyboard should attach as an hkbd(4) device.

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