usb/119509: USB flaky on Dell Optiplex 755

[M. Warner Losh]

In message: <200804112210.m3BMA4dU092518 at freefall.freebsd.org>
            Raphael Becker <rabe at uugrn.org> writes:
: The following reply was made to PR usb/119509; it has been noted by GNATS.
: 
: From: Raphael Becker <rabe at uugrn.org>
: To: bug-followup at FreeBSD.org
: Cc:  
: Subject: Re: usb/119509: USB flaky on Dell Optiplex 755
: Date: Fri, 11 Apr 2008 23:32:36 +0200
: 
:  --mxv5cy4qt+RJ9ypb
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:  
:  Use a custom kernel config for DELL Optiplex 755 (and maybe others):
:  -----------------------------
:  # Kernel-Config for Dell Optiplex 755 / amd64
:   =20
:  
:  include         GENERIC
:  ident           DELL755
:   =20
:  nodevice          atkbdc          # AT keyboard controller
:  nodevice          atkbd           # AT keyboard
:  nodevice          psm             # PS/2 mouse
:  -----------------------------
:  
:  There *should* be a facility to (temporary) disable specific hardware=20
:  drivers or make them skip hardware-checks, maybe in /boot/loader.conf:=20
:  
:  atkbdc_enable=3D"NO"
:  atkbdc_skip=3D"YES"
:  atkbdc_disable=3D"YES"

See http://people.freebsd.org/~imp/disable-hint.diff

Warner