Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754182AbYJ1Vnc (ORCPT ); Tue, 28 Oct 2008 17:43:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753297AbYJ1VnJ (ORCPT ); Tue, 28 Oct 2008 17:43:09 -0400 Received: from smtp3.Stanford.EDU ([171.67.20.26]:38849 "EHLO smtp3.stanford.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753116AbYJ1VnH (ORCPT ); Tue, 28 Oct 2008 17:43:07 -0400 Subject: Re: [alsa-devel] 2.6.26.[6|7] vs. rt11 vs. alsa (usb) midi From: Fernando Lopez-Lezcano To: Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Ingo Molnar , Fernando Pablo Lopez-Lezcano In-Reply-To: References: <1224989187.3706.7.camel@localhost.localdomain> Content-Type: text/plain Date: Tue, 28 Oct 2008 14:35:55 -0700 Message-Id: <1225229755.3750.1.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-5.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1600 Lines: 38 On Mon, 2008-10-27 at 09:13 +0100, Takashi Iwai wrote: > 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. I just tested an RME PCMCIA card + Multiface interface and it shows the same problem. No MIDI messages get through (but the LED in the Multiface blinks). Same hardware booted into 2.6.24.7-rt21 works fine. -- Fernando -- 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/