uvideo.c Logitech QuickCam Pro5000 does not attach uvideo only uadio (7.9-current)

Dear Tech@,

I recently got a Logitech QuickCam Pro 5000 for a small project
deliberately because the uvideo(4) manpage lists it as supported. 

For reference, `uvideo-firmware` is installed and `sysctl
kern.video.record` is enabled. I have used `video(1)` successfully with
cheapie USB microcopes etc.

However for the Logitech QuickCam Pro 5K it seems the video device just
does not attach:

```
$ tail -f /var/log/messages
Jun  1 203507 r0cinante /bsd: uaudio0 at uhub0 port 11 configuration 1
interface 3 "Logitech QuickCam Pro 5000" rev 2.00/0.05 addr 4 Jun  1
203507 r0cinante /bsd: uaudio0: class v1, high-speed, sync, channels: 0
play, 1 rec, 2 ctls Jun  1 203507 r0cinante /bsd: audio1 at uaudio0 Jun
 1 203507 r0cinante /bsd: ugen0 at uhub0 port 11 configuration 1
"Logitech QuickCam Pro 5000" rev 2.00/0.05 addr 4
```

There is no attached uvideo device.

usbdevs -vvvv says,

```
addr 08: 046d:08c5 Logitech, QuickCam Pro 5000
 high speed, power 500 mA, config 1, rev 0.05, iSerial 0EE65192
 driver: uaudio1
 driver: ugen0
```
Again, no uvideo device.

As the CVS commit history for uvideo.c already mentions some issues
with the QuickCam models upon the suggestion of a friend I
compiled with the following quick hack made to the existing quirks: 

```
Index: uvideo.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/uvideo.c,v
diff -u -p -r1.265 uvideo.c
--- uvideo.c    6 Sep 2025 13:45:41 -0000       1.265
+++ uvideo.c    1 Jun 2026 20:03:49 -0000
@@ -387,7 +387,7 @@ const struct uvideo_devs {
            UVIDEO_FLAG_ISIGHT_STREAM_HEADER
        },
        {   /* Incorrectly reports as bInterfaceClass=UICLASS_VENDOR */
-           { USB_VENDOR_LOGITECH, USB_PRODUCT_LOGITECH_QUICKCAMOEM_1 },
+           { USB_VENDOR_LOGITECH, USB_PRODUCT_LOGITECH_QUICKCAMPRO5K_1
}, NULL,
            NULL,
            UVIDEO_FLAG_VENDOR_CLASS
```

This gets me an attaching uvideo0 device in dmesg but /dev/video
still won't work because it "can't find video interface"

dmesg says the following with the custom kernel:
```
uvideo0 at uhub0 port 11 configuration 1 interface 0 "Logitech QuickCam
Pro 5000" rev 2.00/0.05 addr 6 uvideo0: can't find video interface
uaudio1 at uhub0 port 11 configuration 1 interface 3 "Logitech QuickCam
Pro 5000" rev 2.00/0.05 addr 6 uaudio1: class v1, high-speed, sync,
channels: 0 play, 1 rec, 2 ctls
```

And `video` still fails with,
```
$ video
video: /dev/video: Device not configured
```

Just to test, I tried adding a new definition for QUICKCAMPRO5K_1 with
"NULL, NULL, 0" instead of "NULL, NULL, UVIDEO_FLAG_VENDOR_CLASS" but
that got me back to no video device attaching at all.

So it seems to me that there is something strange going on with the
QuickCam still, possibly the quirk configuration already in uvideo.c is
not working somehow?

But I'm afraid this is where I exhausted all knowledge available to me.
Might you be able to please look at this?

Dmesg.boot and output of usbdevs -vvvv for both the patched and the
stock kernel (-current) attached.

Yours

rqm