usb/140160: USB ports are no longer "active" after ACPI suspend/resume cycle.

[Mark Duller]

The following reply was made to PR usb/140160; it has been noted by GNATS.

From: Mark Duller <mark.duller at oerc.ox.ac.uk>
To: bug-followup at FreeBSD.org, jamesbrandongooch at gmail.com
Cc:  
Subject: Re: usb/140160: USB ports are no longer "active" after ACPI suspend/resume
 cycle.
Date: Wed, 02 Dec 2009 09:50:55 +0000

 I have seen a similar issue on my x61s Thinkpad while following the 8.0x 
 releases. The behaviour has changed throughout the releases.
 
 On my latest test (on FreeBSD 8.0-PRERELEASE #2: i386), I found this 
 issue only occurs if I suspend the system while no usb modules are 
 loaded. On a resume, if one then loads the usb modules (such as umass 
 ehci uhci), usb does not work.
 
 My current workaround is to ensure I load the modules I need before the 
 first suspend. A resume in this case does keep the usb ports 'active'.
 
 I'll report back if i notice any change in 8.0-Release.