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Date:      Tue, 03 Jun 2014 17:54:59 +0200
From:      Hans Petter Selasky <hps@selasky.org>
To:        sbruno@freebsd.org, freebsd-usb@freebsd.org
Subject:   Re: Lenovo T61, USB fails to power on after resume
Message-ID:  <538DEFD3.2010406@selasky.org>
In-Reply-To: <1401807398.96874.3.camel@bruno>
References:  <1401807398.96874.3.camel@bruno>

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On 06/03/14 16:56, Sean Bruno wrote:
> Noted that on resume, the USB ports on my T61 don't seem to be active.
>
> How should I go about debugging this?
>
> sean

Hi,

The USB stack performs the same EHCI/OHCI/UHCI/XHCI reset which is does 
during power on, when it resumes. Ensure the ports are powered.  +5V. 
Might be a BIOS/PCI/ACPI issue.

--HPS




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