Tracker+ sends midi system reset on power up ($FF)

Bug
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1

Bug Description

When performing a fresh boot after longer unplugged powerless state, PT+ sends out system reset byte on start up ( FF 00 00) over trs.

Some synths can react weird when they are in the same midi network.

It only happens when PT+ was unplugged for a few minutes. A normal power cycle does not send a midi message.

According to the mma:

"There is also a “system reset” message ($FF), a single byte message which according to the MIDI spec, “[resets] all receivers in the system to power-up status. This should be used sparingly, preferably under manual control. In particular, it should not be sent on power-up”

Steps to Reproduce

1.Plug in Usb cable
2. Plug in a trs midi cable to the midi out of PT+ and hook it up to a midi monitor wich can log midi bytes
3. Power up PT+

Occurrence / Frequency

Always

Found in Firmware

  • Version: 1.1.0 beta2
  • Build: 1156b2

Attachments

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4

Hey Patrick, I’m struggling to recreate this, even after waiting awhile to power-up. Are you still experiencing the issue?

5

Yes, i had to block system reset in my midi router to get rid if this issue.
I use midi over trs.
First (or cold) boot, always reproducable.
I used several midi monitors. The one in reaper (under track midi tools) gives you the most detailed information.

The problem with this is, some synths like mutable instruments ambika and a few old roland ones mute all their voices until you restart them.
So with PT+ in the midi system the thing goes: power on the studio, boot the tracker, switch off the synths, turn on the synths again. Pita!

6

And to add this: with the PT OG it does not happen.
Perhaps its a specific midi config, for this case:

Transport Out: din
Midi clock out: din
Midi out: din
Channel: 8ch

7

ah yeah that is helpful, will test with those settings thanks.

1 Like
8

@Mitch hey, because its still unconfirmed, should i redo the test and provide a video or did you get to replicate it?

9

I tried with those settings again but still have not recreated it. Could you add your config settings file here?

10

Sure, asap when i am back at my studio :blush:

11

Sorry for the late reply.

I tested it again, issue persist.

I reduced the test setup to a dead simple minimum. Here is what i did to constantly recreate it:

  • PT+ to interface via trs midi typ b.

  • Reaper reacontrol midi listening to midi in.

  • Original Polyend power supply via usb c to the tracker

  • Tracker with attached config and new project applied.

  • Plug in all the cables except the usb c power cable, be sure the tracker was unpowered for several minutes.

  • Plug in usb c power and turn on the device within several seconds.

  • midi monitor shows 80 00 00 note off ch1(or2 etc) 0

This is the system reset message. If you power cycle the device again, it wont happen anymore, wait several minutes after unplugging PT+ and you can recreate it again.
trackerConfig.zip (238 Bytes)

IMG_20250324_233203
IMG_20250324_2332031920×4267 1.45 MB

Sorry for the crappy screenshot😅

14

Hi @Patrick , thank you for logging such detailed bug report. We’ll look into fixing it and let you know when a solution is available. Thanks for your support!

1 Like