At Tue, 28 Oct 2008 14:35:55 -0700, Fernando Lopez-Lezcano wrote:
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.
Then this should be in RT side. There is no fundamental change regarding rawmidi since some time ago...
Takashi