try the camera in a USB 2 port, it should work just fine at usb 2 speeds. most systems, the USB 3 ports hve a 'blue' tongue, while the 2 ports are black or another color. On Tue, Sep 29, 2020 at 6:50 PM H <agents at meddatainc.com> wrote: > On 09/29/2020 09:09 PM, John Pierce wrote: > > do other USB 3 (XHCI) devices work on this system ? > > > > On Tue, Sep 29, 2020 at 5:27 PM H <agents at meddatainc.com> wrote: > > > >> On 09/29/2020 02:11 PM, Bruce Ferrell wrote: > >>> Try > >>> > >>> lsusb -v > >>> > >>> and > >>> > >>> sudo dmesg > >>> > >>> ... Be aware, systemd deals with udev and it may be malfunctioning > >>> > >>> > >>> On 9/29/2020 10:30 AM, H wrote: > >>>> Just installed the above USB webcam but it is not recognized by dmesg > | > >> grep usb, nor does Zoom recognize it. I was under the understanding it > >> should not require a driver, or? > >>>> I am running CentOS 7. > >>>> > >>>> Thanks. > >>>> > >>>> _______________________________________________ > >>>> CentOS mailing list > >>>> CentOS at centos.org > >>>> https://lists.centos.org/mailman/listinfo/centos > >>> _______________________________________________ > >>> CentOS mailing list > >>> CentOS at centos.org > >>> https://lists.centos.org/mailman/listinfo/centos > >> I'll bite, systemd and its interaction with udev is beyond my paygrade. > >> How do I investigate this? > >> > >> _______________________________________________ > >> CentOS mailing list > >> CentOS at centos.org > >> https://lists.centos.org/mailman/listinfo/centos > >> > > > Not sure I have any. I tried two different USB 3.0 connectors with the > same result. > > Is there any way I can test this? > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > -- -john r pierce recycling used bits in santa cruz