On 09/29/2020 10:07 PM, John Pierce wrote:
> 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@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx> 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.
>>>>>>
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>>>> I'll bite, systemd and its interaction with udev is beyond my paygrade.
>>>> How do I investigate this?
>>>>
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>>>>
>> 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?
>>
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>
Just tried a USB 2 port with a similar outcome:
kernel: usb 1-9: can't read configurations, error -32
kernel: usb usb1-port9: attempt power cycle
kernel: usb 1-9: new high-speed USB device number 23 using xhci_hcd
kernel: usb 1-9: unable to read config index 0 descriptor/all
kernel: usb 1-9: can't read configurations, error -32
kernel: usb 1-9: new high-speed USB device number 24 using xhci_hcd
kernel: usb 1-9: unable to read config index 0 descriptor/all
kernel: usb 1-9: can't read configurations, error -32
kernel: usb usb1-port9: unable to enumerate USB device
I also have Logitech Bluetooth mouse, an external harddisk, a Belkin USB-serial adapter for my UPS, and a Canon scanner attached to other USB ports, all working fine.
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