Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758190Ab1EBW3K (ORCPT ); Mon, 2 May 2011 18:29:10 -0400 Received: from netrider.rowland.org ([192.131.102.5]:39393 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755221Ab1EBW3I (ORCPT ); Mon, 2 May 2011 18:29:08 -0400 Date: Mon, 2 May 2011 18:29:06 -0400 (EDT) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: "Adi J. Sieker" , Jiri Kosina cc: Oliver Neukum , USB list , , Kernel development list Subject: Re: USB keyboard recognized as HID keyboard but doesn't work In-Reply-To: <4DBF1FD6.1000809@sieker.io> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1588 Lines: 37 On Mon, 2 May 2011, Adi J. Sieker wrote: > > Interestingly, the usbmon trace shows that the interrupt endpoint for > > interface 1 isn't being used by usbhid. I don't know why, but it > > shouldn't make much difference for your purposes since that interface > > appears to be associated with the gaming interface. But maybe I'm > > wrong and it is important somehow... > > > > The other noticeable thing is that the keyboard didn't accept the > > Set-Idle request for interface 1. > > > > You said before that the keyboard worked okay when driven by a guest > > Windows OS, right? Can you collect an equivalent usbmon trace for > > that? Comparing the two traces may be instructive. > > I hope this is what you meant. :) > Attached is a usbmon trace when I attach the keyboard to a VBox VM > running a Windows XP guest. I have no idea how to get a USB trace from > within Windows. The last block is when I pressed h twice in the Windows > XP guest. This is perfect. It shows that the H key is reported using the interrupt endpoint on interface 1, which explains why it's not working with usbhid. It also shows that the rejected Set-Idle request doesn't matter. At this point I don't know what the problem is, but now there's plenty of information in the email thread for the people on linux-input to debug this. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/