Date: Sat, 27 Nov 2010 18:46:22 -0600 From: Brandon Gooch <jamesbrandongooch@gmail.com> To: Bruce Cran <bruce@cran.org.uk> Cc: freebsd-usb@freebsd.org Subject: Re: USB controller error logged when resuming after suspend Message-ID: <AANLkTi=PTQp1jV-rXygYKHkLMaU-0EADbZ6HXBnG5gPK@mail.gmail.com> In-Reply-To: <20101126074943.00001950@unknown> References: <201011142136.57161.bruce@cran.org.uk> <AANLkTik8exJ7_biOMkj5OOp4R0WxwSYqtQaQv%2BJajt=w@mail.gmail.com> <20101126074943.00001950@unknown>
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On Fri, Nov 26, 2010 at 1:49 AM, Bruce Cran <bruce@cran.org.uk> wrote: > On Thu, 25 Nov 2010 20:46:42 -0600 > Brandon Gooch <jamesbrandongooch@gmail.com> wrote: > >> It's becoming more well known that the USB stack isn't >> "suspend/resume" safe at this point. Have you tried building your USB >> systems as kernel modules and unloading/loading them via >> /etc/rs.suspend|resume? I used to have luck doing that here, but >> recently that has broken as well (running HEAD). > > I'm not so interested in using suspend/resume as a real feature, > but more as a developer to report issues so that in the future we can > perhaps have it working for end-users. Apparently there's lots of > infrastructure work that still needs to be done before it's going to be > reliable unfortunately. Do you mean USB subsystem infrastructure, or something more far-reaching? It seems to me that it's SO close to being functional; in fact, I've taken to not loading any USB drivers at all on my notebook, which seems to be the only "reliable" way of using suspend/resume -- that's not to say that it's perfect, but Pretty Good(TM). Also, If we could round-up the various sysctl settings and document them in one place([1] or [2]), I imagine many users would have suspend/resume as a workable feature, at least on amd64... -Brandon [1] http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html [2] http://www.freebsd.org/doc/en/articles/laptop/article.html or
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