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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
HEEELp! Ssys Chej Error - bricked G2X?
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jamos



Joined: Jun 01, 2004
Posts: 513
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 41

PostPosted: Sat Jul 02, 2022 5:24 pm    Post subject: HEEELp! Ssys Chej Error - bricked G2X?
Subject description: God damn it
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My G2X just crashed, again, due to bad data sent from my MPC - long story - but this time, it is down for the count. Sys Chek Error, ready for update.

I have FUCKING WEDDING to play in a week, and my backups are old.

Right now I am fucking frazzled but I need to get this going FAST - can anyone help? (I have read jack Hertz's post on this but it has been so long I can't even remember how to do the update.)

Will be scouring the forum for tips... any help is appreciated! jimjohnson59@protonmail.com
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jamos



Joined: Jun 01, 2004
Posts: 513
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 41

PostPosted: Sat Jul 02, 2022 5:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

Whew! I am safe, but my heart is still pounding.

In a nutshell - junk data from my MPC crashed my G2x, HARD. As in it wouldn't boot. Fortunately I remembered how to install the OS and, after an initial failure it came up again with no apparent data loss.

I will have a full report n the full story of this bullshit tomorrow... right now I need to do some backups. And have a drink.
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Blue Hell
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Joined: Apr 03, 2004
Posts: 23960
Location: The Netherlands, Enschede
Audio files: 273
G2 patch files: 320

PostPosted: Sat Jul 02, 2022 7:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

Pwew - lucky escape!
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Jan
also .. could someone please turn down the thermostat a bit.
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jamos



Joined: Jun 01, 2004
Posts: 513
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 41

PostPosted: Sun Jul 03, 2022 12:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ugh. Several crashes and reboots later, I still don't know what's going on.

First - this is caused by specific data strings sent from the MPC Live. The weird thing is that it only happens when moving between specific performances, and it is completely repeatable when moving between those performances. In most cases the instrument is fine after a reboot, but in this particular case it wipes out the OS - every single time. (This problem cropped up when we rearranged our set for a wedding we're doing next weekend.)

The MIDI data that causes the problem is below:

Code:
 3310106  BA 00 00       Control Change, channel 11, controller = 0, value = 0
  3310106  BA 20 02       Control Change, channel 11, controller = 32, value = 2
  3310107  CA 09          Program Change, channel 11, program = 9
  3310108  CA 09          Program Change, channel 11, program = 9
  3310108  CA 09          Program Change, channel 11, program = 9
  3310109  CA 09          Program Change, channel 11, program = 9
  3310129  BA 7B 00       Control Change, channel 11, controller = 123, value = 0
  3310129  BA 40 00       Control Change, channel 11, controller = 64, value = 0
  3310130  BE 7B 00       Control Change, channel 15, controller = 123, value = 0
  3310131  BE 40 00       Control Change, channel 15, controller = 64, value = 0
  3310132  B5 7B 00       Control Change, channel 6, controller = 123, value = 0
  3310133  B5 40 00       Control Change, channel 6, controller = 64, value = 0
  3310134  BD 7B 00       Control Change, channel 14, controller = 123, value = 0
  3310135  BD 40 00       Control Change, channel 14, controller = 64, value = 0


I thought the problem would be the repeated program changes, but no. I inserted a MIDI filter (MIDI Solutions Event Processor), tested that it is doing what it should, and the problem still occurs.

I am using OS 1.40 because I was having compatibility problems with Windows XP and 1.62... if I remember correctly. Perhaps I will try updating. Does anyone know if there is a reason to think this might be the problem?

For completeness' sake I am attaching the two performances that are involved below.

ANY help is greatly appreciated!


Burn.prf2
 Description:
Crashes here

Download
 Filename:  Burn.prf2
 Filesize:  11.27 KB
 Downloaded:  89 Time(s)


Jasmine and Rose.prf2
 Description:
Pre-crash

Download
 Filename:  Jasmine and Rose.prf2
 Filesize:  11.88 KB
 Downloaded:  93 Time(s)

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Blue Hell
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Joined: Apr 03, 2004
Posts: 23960
Location: The Netherlands, Enschede
Audio files: 273
G2 patch files: 320

PostPosted: Sun Jul 03, 2022 2:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

Could it be that the MIDI is too fast for the synth?
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Jan
also .. could someone please turn down the thermostat a bit.
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jamos



Joined: Jun 01, 2004
Posts: 513
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 41

PostPosted: Sun Jul 03, 2022 3:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yes, that is what it is. Basically it seems that any MIDI channel data that is received immediately after the program change, causes the crash. In fact, I am operating on a new hypothesis here. The performance name on the G2 changes before the lockup, so that indicates that the patch is at least partially loaded. I have a MIDI zone in this G2 perf that routes channel 6 data from the MPC to another synth. I have turned that off and it seems to work. I have to do a lot of testing to be sure (I've thought I had the fix before). In fact what I am doing now is disabling that zone in the initial variation (by setting the input to Keyboard), and then switch to the correct variation just before real data starts arriving from the MPC.
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Blue Hell
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Joined: Apr 03, 2004
Posts: 23960
Location: The Netherlands, Enschede
Audio files: 273
G2 patch files: 320

PostPosted: Sun Jul 03, 2022 3:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

Fingers crossed then - but seems to go somewhere :)
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Jan
also .. could someone please turn down the thermostat a bit.
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jamos



Joined: Jun 01, 2004
Posts: 513
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 41

PostPosted: Tue Aug 16, 2022 10:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

To cap this off correctly, if a bit late: it seems that the MPC sends an all notes off message and sustain off message immediately after each program change. By filtering these out... everything works correctly.
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Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 23960
Location: The Netherlands, Enschede
Audio files: 273
G2 patch files: 320

PostPosted: Wed Aug 17, 2022 6:44 am    Post subject: Reply with quote  Mark this post and the followings unread

Good that it is fix(able/ed) :')

And how did the wedding thing go?

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Jan
also .. could someone please turn down the thermostat a bit.
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Electromagnetic Wave



Joined: Apr 28, 2013
Posts: 298
Location: Kebek
G2 patch files: 38

PostPosted: Thu Sep 08, 2022 4:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hey! I had a similar issue with an old sequencer. The Yamaha RS7000 send MIDI #cc 64 and 66 to MIDI output everytime the'Stop" button is pressed.+ the RS7k send continuous Real Time MIDI message. I no longer had bugs with my heavy performances when filtering these messages. I have also found that keeping G2 memory at a minimum of 20% helps stability for heavy performances.

Cheers
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