> http://www.telegraph-road.org/rosegarden/rosegarden-4-0.9.91rc2.tar.bz2
After installing RC2 on my gentoo box (it compiles without errors now :-), I 
have serious trouble with USB-MIDI:
The first playback device seems to be broken (no MIDI output). With 0.9.9 
there was no such problem. The problem is somwehat complex, and I don't know 
exactly what would be the expected behaviour in conjunction with qjackctl.
But what I know is that after playing too much around, also the 2nd playback 
device has no sound no more, and a reboot of the box helps.


Environment
===========

Program versions
----------------

Distro: Gentoo stable
Kernel: gentoo-dev-sources 2.6.9-r4
RG: http://www.telegraph-road.org/rosegarden/rosegarden-4-0.9.91rc2.tar.bz2
alsa-lib 1.0.6
jack-audio-connection-kit:  0.99.0
qjackctl 0.2.9
vkeybd 0.1.15

Relevant Hardware
-----------------
2 x MidiSport 2x4, showing up as device 80 and 88; Playback device 1 is on 
80:2 Playback device channel 1,  (with omni on), 80:1 is not connected.


Steps to reproduce
==================

A) Test environment without RG
------------------------------

start qjackctl via Alt&F2
start vkeybd via Alt&F2

qjackctl: Connect Virtual KeyBoard to Playback Device:
129:0 Virtual Keyboard |- 0: Virtual Keyboard
 --to-- 80: MidiSpoirt 2x4 - Rawmidi 2 |- 2: MidiSport 2x4 MIDI 3

Play with the mouse on vkebd and have some limited amount of fun ;-)
-> Anything OK up to now.


B) Bring in RG
--------------

start rosegarden via Alt&F2
-> RG shows up as Writeable Client 130:Rosegarden |- 0:Rosegarden input
-> don't touch it, bring vkeybd to front

Play with the mouse on vkebd and have no fun at all :-(
-> Although still connected as in A), no sound on the Playback device.

close RG
-> RG disappears from qjackctl as expected.

Play with the mouse on vkebd and have no fun at all :-(
-> Although still connected as in A), no sound on the Playback device.


C) Verify reproducability until now
-----------------------------------

close vkeybd
close qjackctl
back to square A)

-> Steps A) to B) seem to be (sometimes?) reproducable.
It seems not always to be needed to restart jack.


D) Deeper inquiry: bring in a second playback device
----------------------------------------------------

qjackctl: Connect Virtual KeyBoard to Playback Device 2:
129:0 Virtual Keyboard |- 0: Virtual Keyboard
 --to-- 80: MidiSpoirt 2x4 - Rawmidi 2 |- 2: MidiSport 2x4 MIDI 2

Switch Device 2 to MIDI Channel 1 (for vkeybd)

Play with the mouse on vkebd and have some limited amount of fun ;-)
-> Device 2 is OK, Device 1 still muted.


E) Play around with RG
----------------------------------------------------
The 1st Device can never be used with existing compositions (no MIDI, no 
matter whether I start RG with jack or without jack), the 2nd device works 
for playback.
-> Exchanging the 2 devices in RG.
-> The 2nd Device still works, it seems that the 1st device listed
   in qjackctl gets broken (no Idea which ordering is relevant here).

The more I play around with RG, the more devices I seem to loose (I have 3 of 
them). Before sending this mail, I had no sound no more of device 2, saved 
the .rg file, rebooted, had still no sound out of device 1 as before, but 
device 2 worked again.

--> ???





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