Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753004AbYJ0INi (ORCPT ); Mon, 27 Oct 2008 04:13:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751904AbYJ0INb (ORCPT ); Mon, 27 Oct 2008 04:13:31 -0400 Received: from ns.suse.de ([195.135.220.2]:56770 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751739AbYJ0INb (ORCPT ); Mon, 27 Oct 2008 04:13:31 -0400 Date: Mon, 27 Oct 2008 09:13:29 +0100 Message-ID: From: Takashi Iwai To: Fernando Lopez-Lezcano Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Ingo Molnar Subject: Re: [alsa-devel] 2.6.26.[6|7] vs. rt11 vs. alsa (usb) midi In-Reply-To: <1224989187.3706.7.camel@localhost.localdomain> References: <1224989187.3706.7.camel@localhost.localdomain> User-Agent: Wanderlust/2.12.0 (Your Wildest Dreams) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 Emacs/22.3 (x86_64-suse-linux-gnu) MULE/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") 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: 1284 Lines: 32 At Sat, 25 Oct 2008 19:46:27 -0700, Fernando Lopez-Lezcano wrote: > > Hi... anyone out there also having problem with this combination? > 2.6.26.7 or 2.6.26.6 with 2.6.26.6-rt11 and alsa MIDI > It looks to me like alsa midi is broken. > > Probably an interaction with the realtime kernel patch. A Fedora kernel > based on 2.6.26.6 (2.6.26.6-49 on fc8) works fine, a very similarly > patched kernel that includes the realtime patch does not. The > configurations for both are almost the same (today I tried to change > some of the most obvious differences and rebuild, with the same > result). > > No problems with 2.6.24.7-rt21. > > Test: boot, login, plugin an external usb keyboard (Yamaha P250), it is > recognized, use qjackctl alsa patchbay to connect it to kmidimon, > kmidimon sees only _one_ midi message and that's it. Kmidimon can't be > killed after that. What about other MIDI devices on other bus, e.g. an MPU401 on a PCI soundcard or so? There is a possibility of breakage in the USB driver side, too. Takashi -- 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/