lkml.org 
[lkml]   [2008]   [Oct]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [alsa-devel] 2.6.26.[6|7] vs. rt11 vs. alsa (usb) midi
From
Date
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




\
 
 \ /
  Last update: 2008-10-28 22:45    [W:0.378 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site