linux-kernel - Re: USB keyboard backlight powering down.

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Message-ID: <CAC5F_1=tiGUtWOsOQ17vEYqVxuoVuoEH_nmEZ3BoL0dsgXJn3w@mail.gmail.com>
Date:	Tue, 16 Oct 2012 12:45:56 -0400
From:	Michael Spang <spang@...gle.com>
To:	Dave Jones <davej@...hat.com>, Michael Spang <spang@...omium.org>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>, greno@...izon.net,
	Fedora Kernel Team <kernel-team@...oraproject.org>
Subject: Re: USB keyboard backlight powering down.

On Tue, Oct 16, 2012 at 11:20 AM, Dave Jones <davej@...hat.com> wrote:
> Gerry (CC'd) reported a bug to us that since 3.6.1, his illuminated
> Logitech USB keyboard doesn't light up until he hits a key, and then
> it immediately powers back off, defeating the purpose of having an
> illumated keyboard.
>
> Looking over the 3.6.1 changelog, I see this change, which sounds
> like it might be responsible ?
>
> commit ee537508bdc0c00b96ac497f3d82a68f820e6182
> Author: Michael Spang <spang@...omium.org>
> Date:   Fri Sep 14 13:05:49 2012 -0400
>
>     Increase XHCI suspend timeout to 16ms

I don't think this is related to your problem, as this patch is in
suspend/resume code. It just allows the controller more time to halt.

Thanks,
Michael
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