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

Steven Friedrich FreeBSD at twc.com
Sun Feb 21 00:27:25 UTC 2021


On Friday, 19 February 2021 06:41:49 EST Steven Friedrich wrote:
> BTW, I included output from pciconf, but the device is USB.  Sorry.
> I was confused because there's an unsupported wi-fi on the motherboard, also
> from Realtek.
> mobo Realtek is 8821ce
> USB Realtek is 8811au
> 
> On Thursday, 18 February 2021 21:37:34 EST Steven Friedrich wrote:
> > 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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Here is the what the original report SHOULD have been:

This appears in dmesg if Netgear A6100 plugged in at boot
Starting devd.

Cannot 'start' webcamd. Set webcamd_enable to YES in /etc/rc.conf or use 
'onestart' instead of 'start'.
I don't HAVE or want a webcam. This is an anomaly

Here's the device as reported by lsusb
Bus /dev/usb Device /dev/ugen0.5: ID 0846:9052 NetGear, Inc. A6100 AC600 DB 
Wireless Adapter [Realtek RTL8811AU]


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

I hope I am getting better at reporting anomalies...  8o)

-- 
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