On Saturday 05 June 2010 14:20:07 Андрей Ковальчук wrote:
> The following reply was made to PR usb/146840; it has been noted by GNATS.
> 
> From: =?UTF-8?B?0JDQvdC00YDQtdC5INCa0L7QstCw0LvRjNGH0YPQug==?=
>  <and...@anviko.com.ua> To: bug-follo...@freebsd.org, free...@anviko.com.ua
> Cc:
> Subject: Re: usb/146840: [hang] FreeBSD 7.2 / 7.3 / 8.0 hang at startup
>  after ehci0 detected (CD Loader 1.2) // same as closed-unsolved
>  [usb/108509] Date: Sat, 5 Jun 2010 14:45:57 +0300
> 
>  I try disabling EHCI and USB in loader (because Compaq BIOS dont have
>  settings for disabling USB controller):
> 
>  hint.ehci.0.disabled=1
>  hint.usb.0.disabled=1

A hang can indicate an IRQ issue.

Try to enable USB debugging:

sysctl hw.usb.ehci.debug=15

--HPS
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