Messages in this thread | | | Subject | Re: [alsa-devel] 2.6.26.[6|7] vs. rt11 vs. alsa (usb) midi | From | Fernando Lopez-Lezcano <> | Date | Tue, 28 Oct 2008 14:35:55 -0700 |
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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
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