[linux-audio-dev] rosegarden, alsa_seq and usx2y rawusb

Rui Nuno Capela rncbc at rncbc.org
Mon Dec 13 04:13:00 EST 2004


Uwe Koloska rwote:
> Hello,
>
> have now figured out how to drive my audio and midi with tascam us-122 on
> SuSE 9.2 -- and (after disabling all tv thingies) it works very reliable
> and with very few xruns.
>
> The following software seems to be involved:
> - linux-2.6.8-24.3 (SuSE Standard kernel -- heavily patched)
>   patched with linux-2.6.8-24-usx2y-0.8.6.patch from rncbc
>   (CONFIG_HPET_RTC_IRQ=n)
> - realtime-lsm-0.8.5
> - ruis jack
>   jack-0.99.21.1usx2y-17.suse92
> - qjackctl-0.2.13-1
> - rosegarden4-0.9.9-2
> - ZynAddSubFX-1.4.3-141
>
> With this configuration I have found a weird problem:
> When starting jack with driver 'alsa' (from qjackctl) I am able to play my
> alsa instruments (for example ZynAddSubFX) from within rosegarden:
> - start ZynAddSubFX
> - start rosegarden
> - choose ZynAddSubFX for the active track
> - play the keyboard an listen to nice ZynAddSubFX sounds ...
>
> But when starting jack with driver 'usx2y' the midi seems not to arrive at
> ZynAddSubFX (or Hydrogen or fluidsynth or ...) Even ASeqView doesn't show
> any incoming events if chosen as instrument in rosegarden.
>
> Restarting jack with driver alsa -- and all went well ...
>
> What is the problem?  And what can I do to help with this problem?
>
> Are there any missing facts?
>

I cannot confirm this issue yet, but seems strange how just using the alsa
hwdep pcm interface affects the alsa sequencer behavior. They should be
orthogonal.

As most of your stack is filled with these custom versions of mine for
alsa and jack, I'll try to reproduce this at my SUSE 9.2 box. BBL tonight

Bye now.
-- 
rncbc aka Rui Nuno Capela
rncbc at rncbc.org



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