linux-kernel - Re: broken access to a USB HID device after suspend

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Message-ID: <Pine.LNX.4.44L0.0803141034260.4478-100000@iolanthe.rowland.org>
Date:	Fri, 14 Mar 2008 10:36:06 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Tino Keitel <tino.keitel@....de>
cc:	Jiri Kosina <jkosina@...e.cz>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>
Subject: Re: broken access to a USB HID device after suspend

On Fri, 14 Mar 2008, Tino Keitel wrote:

> On Fri, Mar 14, 2008 at 08:13:36 +0100, Tino Keitel wrote:
> 
> [...]
> 
> > Well, I still don't have USB_DEBUG or usbmon enabled, but I just got
> > that error again. I pulled the power plug from the LCD and replugged
> > it, without success. Then I did a suspend/resume cycle, and it worked.
> 
> Forgot to mention: yesterday it was working, and the computer was
> suspended overnight, without a reboot inbetween.

I suspect the suspend/resume connection is misleading you, that it has 
nothing to do with the real problem.

Have you tried using the LCD device with a different computer?  It's 
worth a try, just to rule out the possibility that something is wrong 
with your computer's USB hardware.

Alan Stern

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