Date: Wed, 14 Apr 2021 02:58:26 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Nilton Jose Rizzo <rizzo@i805.com.br> Cc: freebsd-current@freebsd.org Subject: Re: Problems with Webcam and USB 3.X Message-ID: <603eec44-687c-b9ca-8f5e-2376f865211b@selasky.org> In-Reply-To: <202104140049.13E0nDdD041474@server.i805.com.br> References: <202104140049.13E0nDdD041474@server.i805.com.br>
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On 4/14/21 2:49 AM, Nilton Jose Rizzo wrote: > ugen1.3: <vendor 0x046d product 0x0825> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA) Hi, This webcam is connected VIA USB2.0 protocols only. No USB 3.x involved. Unstable picture may indicate a bandwidth problem. You can also compile webcamd with debugging and run it in the foreground. Then webcamd will likely print the UVC decoding glitches. You may also try the following command to get more logs: usbdump -i usbus1 -f 3 Then start for a few seconds till you get a picture: pwcview -d /dev/video0 -s vga Have you tried another webcam on the same machine? --HPS
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