Date: Fri, 17 Oct 2003 10:43:20 -0700 From: Michael Smith <msmith@mu.org> To: acpi-jp@jp.FreeBSD.org Cc: freebsd-current@freebsd.org Subject: Re: [acpi-jp 2746] Re: ACPI, USB, and the tangled web Message-ID: <6620DF5E-00C9-11D8-AF0E-000393DA4D30@mu.org> In-Reply-To: <20031017101531.H41079@root.org> References: <200310162152.22187.mistry.7@osu.edu> <20031017101531.H41079@root.org>
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On Oct 17, 2003, at 10:25 AM, Nate Lawson wrote: > The problem is USB although ACPI magnifies it. USB devices can > generate > wake events. In my current testing of a new acpi_cpu driver, I've > found > that just having the USB bus enabled in the kernel (with no devices > attached) causes it to generate a steady stream of bm_sts sets even > though > the laptop is completely idle. This is normal; USB polls for new devices. You'll need to quiesce the USB controller somehow. = Mike -- "there is no reliable algorithm for ensuring efficient memory usage, and none is possible" [Wilson95]
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