Re: [Qtractor-devel] System lock-up on MIDI clocking

[Ralf M. <ral...@al...>]

On Thu, 2014-08-07 at 22:43 +0200, Ralf Mardorf wrote:
> The only issue seems to be, that the RX21 only follow song positions,
> when playing or manually moving the play head, but in loop play it's
> ignored.

I suspect that song position pointer only is send when the play head is
moved to a position and when starting, but during playing just MIDI
clock is sent. I didn't check this, but if so, for loop play it should
be send each time the loop is at the left locator position.

> Qtractor as sync master and a YAMAHA RX21 as sync slave (both tested,
> RX21 CLOCK: INTERNAL and CLOCK: MIDI) seems to work correctly.

With clock set to internal, song position pointer does work, for correct
sync there likely is the need to choose MIDI ;). JFTR syncing different
MIDI gear to each other is a PITA, for some devices combinations it does
work and for other devices combinations it doesn't work. It has nothing
to do with bad software and/or bad stand alone devices, it's related to
the MIDI specifications, we once talked about this at LAD or perhaps
LAU. If Qtractor does freeze a machine it's a bug, but as already
pointed out, I don't experience this bug on my machine.

IMO using a sequencer is more comfortable, than using menus of drum
machines, so using a drum machine as a MIDI drum sound player IMO is
better, than to sync the machines sequencer with the computer's
sequencer.