Strange anomaly when Netgear A6100 - AC600 Dual Band WiFi USB Mini Adapter plugged in on boot

Steven Friedrich FreeBSD at twc.com
Fri Feb 19 02:37:39 UTC 2021


On Thursday, 18 February 2021 16:35:48 EST Daniel Stevenson wrote:
> On Thursday, February 18th, 2021 at 04:40, Steven Friedrich 
<FreeBSD at twc.com> wrote:
> > Starting devd.
> > 
> > Cannot 'start' webcamd. Set webcamd_enable to YES in /etc/rc.conf or use
> > 
> > 'onestart' instead of 'start'.
> > 
> > There's nothing in /etc/rc.conf to invoke webcam. Nothing in
> > /etc/devd.conf
> > 
> > (AFAIK). I haven't modified devd.conf
> > 
> > If I unplug the adapter and reboot, no message about webcam appears.
> > 
> > Here's the device as reported by pciconf -lv
> > 
> > none6 at pci0:2:0:0: class=0x028000 card=0x831a103c chip=0xc82110ec
> > 
> > rev=0x00 hdr=0x00
> > 
> > vendor = 'Realtek Semiconductor Co., Ltd.'
> > 
> > device = 'RTL8821CE 802.11ac PCIe Wireless Network Adapter'
> > 
> > class = network
> > 
> > Here's the dmesg
> > 
> > ugen0.2: <Realtek 802.11ac WLAN Adapter> at usbus0
> > 
> > rtwn0 on uhub0
> > 
> > rtwn0: <802.11ac WLAN Adapter > on usbus0
> > 
> > rtwn0: MAC/BB RTL8821AU, RF 6052 1T1R
> 
> Whether or not you have a line in your /etc/rc.conf that says
> webcamd_enable="NO", webcamd is disabled by default.  You have to
> override this by setting webcamd_enable="YES".
You misinterpreted my post.

I don't want webcam.

I get this errant message because I have a USB network adapter plugged in on 
boot.

I believe this is related to /usr/src/UPDATING entry 20180211:
20180211:
        devmatch functionality has been turned on in devd. It will 
automatically
        load drivers for unattached devices. This may cause unexpected drivers 
to
        be loaded. Please report any problems to current@ and imp at freebsd.org.




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