USB_ERR_IOERR: is usb controller electrically "broken" ?

[Hans Petter Selasky]

On 12/01/17 10:55, ingegneriaforense at alice.it wrote:
> Hello everybody,
> I'm new of this list. I'm installing the freebsd from CDROM.
> 
> During the installation I receive some messages:
> 
>>> usbd_req_re_enumerate: addre=3, set address failed (USB_ERR_IOERROR, ignored)
>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_IOERROR
>>> ugen0.3: <Unknown> at usbus0 (disconnected)
>>> uhub_reattach_port: could not allocate new device
>   
> QUESTIONS:
> 

Hi,

> 1. Please, can you tell me what this means ? Maybe is the USB controller electrically "broken" or is due to a no correct software configuration of its parameters ?

It means the HUB is unable to enumerate some device, because it is not 
responding correctly to the USB tokens the host controller is sending. 
You'll need a USB wire analyzer to nail this down exactly.

--HPS

> These messages are shown during the whole installation process overwriting my terminal and the sysinstall windows also.
> Is a way to avoid this behaviour, configuring the freebsd installation ?
> 
> 2. Is there a way to take a screenshot of boot messages that are shown on the monitor during the installation process ?
> Thanks very much in advance.
> 
> I apologize with you if my question is not related to the topics of this mailing list.
> 
> Vincenzo.
> 
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