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Date: Mon, 27 Oct 2008 09:13:29 +0100 From: Takashi Iwai <tiwai@...e.de> To: Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU> Cc: alsa-devel@...a-project.org, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu> Subject: Re: [alsa-devel] 2.6.26.[6|7] vs. rt11 vs. alsa (usb) midi 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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