Amaros

Q: Logic X Out of tune bug

I work with Logic Pro X every day since it has been released and noticed a very strange bug with both audio and software instruments (MIDI):

After saving and reloading a project Logic Pro X randomly plays audio files out of tune. It is not affecting every track, but some. I checked everything: sample rate, interface (Presonus StudioLive 16.0.2). The strange thing is: after stopping playback, starting, stopping again and starting again and opening the track in the sample window, playing it back there and so on.....everything works just fine.

 

Today the same with MIDI:

 

I saved a track some days ago. Today I reopened it. Just piano. Logic Pro X starts to insert false notes and some, not all, notes are out of tune. I checked the arrangement in the piano roll, score and event list. Everything is fine. No controllers, nothing. I even switched to another instrument and internal audio. Same result. I then moved the region to a new track (external MIDI) and played it back over USB and a ROLAND Juno-Di. Perfect. After that I exported the region as a MIDI file and imported it back to the same software instrument track were it was before. Everything works fine.

 

That's strange, isn't it?

The last two updates didn't correct this bug - and I really think it is a bug, because it happens to new songs and imported songs (from L9), but never happens in L9.

 

No third party plug-ins are involved! Just Logic! I checked that before.

 

I wrote a bug report for Apple and hope they will do something about it.

 

Anyone else with this bug?

iMac, OS X Mountain Lion (10.8.4)

Posted on Aug 23, 2013 2:45 AM

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Q: Logic X Out of tune bug

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  • by Eriksimon,

    Eriksimon Eriksimon Aug 25, 2013 6:05 AM in response to xmota
    Level 6 (12,469 points)
    Aug 25, 2013 6:05 AM in response to xmota

    Well, the issue proves impossible to create again so far (I did some more MIDI recording in the same project - all fine.)

    Also, for affected regions there is a fix, luckily: Export the track as a MIDI file and then re-import it.

    It seems that the heart of this corruption is in the region, since I could copy over a faulty region to a new LP X project and it kept exhibiting the anomaly.

  • by Eriksimon,

    Eriksimon Eriksimon Aug 25, 2013 6:08 AM in response to xmota
    Level 6 (12,469 points)
    Aug 25, 2013 6:08 AM in response to xmota

    Well, the issue proves impossible to create again so far (I did some more MIDI recording in the same project - all fine.)

    Also, for affected regions there is a fix, luckily: Export the track as a MIDI file and then re-import it.

    It seems that the heart of this corruption is in the region, since I could copy over a faulty region to a new LP X project and it kept exhibiting the anomaly.

  • by The Art Of Sound,

    The Art Of Sound The Art Of Sound Aug 25, 2013 9:00 AM in response to Eriksimon
    Level 6 (12,107 points)
    Aug 25, 2013 9:00 AM in response to Eriksimon

    Test 2 Erik?

  • by Eriksimon,

    Eriksimon Eriksimon Aug 25, 2013 9:10 AM in response to The Art Of Sound
    Level 6 (12,469 points)
    Aug 25, 2013 9:10 AM in response to The Art Of Sound

    The forum was still being "temperamental" after whatever it was they fixed (or tried to?) during the outage? I only got timeout messages when trying to post these, so I copied the text and saved it in a document, so I could post it later, when the glitches had cleared up. Apparently they did  post anyway, in spite of me being told they didn't.

    First posts don't appear, then they all appear - I wonder "wuttuf" they are doing?

     

    This one took 11 seconds...

    pic 2013-08-25 at 18.09.04.PNG

  • by The Art Of Sound,

    The Art Of Sound The Art Of Sound Aug 25, 2013 9:34 AM in response to Eriksimon
    Level 6 (12,107 points)
    Aug 25, 2013 9:34 AM in response to Eriksimon

    Yes.. strange things™ going on this weekend.. and still cannot edit an existing post on an iPad.. which is what they said they were trying to fix.

  • by leefisher,

    leefisher leefisher Aug 29, 2013 3:53 AM in response to Amaros
    Level 1 (0 points)
    Aug 29, 2013 3:53 AM in response to Amaros

    I also have this problem. I don't think it is a bug in a region, as I have re-recorded the bugged MIDI track, and upon playback the problem occurs (even if its recorded onto a different track). Reverting back to previous versions (10.01) doesn't fix it. God this is annoying!

  • by xmota,

    xmota xmota Sep 24, 2013 10:10 AM in response to Amaros
    Level 1 (0 points)
    Sep 24, 2013 10:10 AM in response to Amaros

    I have another pitch problem symptoms now:

     

    - I have Mackie Control + 2 Expanders and C4

    - They are recognized correctly as a control surfaces

    - They are not connected in Environment to seq input

     

    ... but when moving the volume faders except of the volume the fader changes also pitch of the External instrument (same for plugins). The same behaviour happens in the oposite direction, when I move pitchbend wheel on my master keyboards - the motorised faders on Mackies start to move (only on selected track)

  • by commonhare,

    commonhare commonhare Nov 20, 2013 2:13 PM in response to Amaros
    Level 1 (0 points)
    Nov 20, 2013 2:13 PM in response to Amaros

    Same here.  B becomes D# on playback, every octave.

     

    Created new region on same track, cut & paste notes, problem gone.

     

    Fix that nonsense, Apple.  Frikkin amateur hour.

  • by dieboldcracy,

    dieboldcracy dieboldcracy Nov 28, 2013 7:49 AM in response to Amaros
    Level 1 (0 points)
    Nov 28, 2013 7:49 AM in response to Amaros

    Same here and it's always B to D#.  I thought maybe it had to do with my using a novation controller with automap which doesn't seem to quite behave well with LX.  Whatever it is I concur with commonhare- it's open mic night in Recording platformville

  • by Evindar,

    Evindar Evindar Nov 28, 2013 10:42 AM in response to Amaros
    Level 1 (0 points)
    Nov 28, 2013 10:42 AM in response to Amaros

    I´m making ethnic music and I have the same problem.

     

    I´m using blue tones, some tones to -50 cent ot +50. All was working in LP9 without bugs. But in LPX when I close and open a project ist´detuned/out of tune.

     

     

    I have to go to tuning, uncheck end recheck the costum scale to get it tuned again. I hope Apple will fix it soon!

  • by terryat22,

    terryat22 terryat22 Jan 18, 2014 7:47 PM in response to Amaros
    Level 1 (0 points)
    Jan 18, 2014 7:47 PM in response to Amaros

    I'm getting the same issue. B2 in the piano roll plays as D#2. The 'Piano Roll keyboard' plays the right note, but the B2 in the 'Piano Roll grid' sounds very D#2. The Event panel shows the correct note, but clicking on the event plays the wrong one.

     

    Additionally, clicking on a MIDI region on another track doesnt show it in the piano roll.

  • by Eriksimon,

    Eriksimon Eriksimon Jan 19, 2014 2:48 AM in response to terryat22
    Level 6 (12,469 points)
    Jan 19, 2014 2:48 AM in response to terryat22

    Hi commonhare, dieboldcracy and terryat22, could you post which version of Logic Pro X this happened in? And will you please all report it to Apple feedback?

    I'm hoping you're still on 10.0.4 or earlier, so that it might mean that this bug has been fixed in the enormous (the Logic app got about 25 % bigger) 10.0.5 update..

    Even though it is now clear this is a bug, it is also weirdly specific (B becomes D#), and very occasional. I haven't encountered it again thus fair, though there are B's in all my projects... no idea if this "occasionality" makes it easier or harder for the devs to repair...

  • by terryat22,

    terryat22 terryat22 Jan 19, 2014 4:48 AM in response to Eriksimon
    Level 1 (0 points)
    Jan 19, 2014 4:48 AM in response to Eriksimon

    Sorry to say that mine is a fresh installation of 10.0.6. My project was created in this same version and not 9 as had been a suggest cause. I've tried but can't seem to track down the cause, so I'm also thinking bug. I'll report it to feeback now.

  • by Eriksimon,

    Eriksimon Eriksimon Jan 19, 2014 5:13 AM in response to terryat22
    Level 6 (12,469 points)
    Jan 19, 2014 5:13 AM in response to terryat22

    Too bad indeed, but thanks for reporting back. And about the "migration" issue: I never believed that, although I first encountered in a LP9 created project imported in X - but it was on a track that was created in LP X., and later I "caught" the bug in an LP X started project.

    On the upside: it only happens very occassionaly, and it is generally easy to catch because of the dissonance (aug. 5th down) it creates in most situations. And it's easily fixed. Still, it is a very odd bug.

  • by agmusicman,

    agmusicman agmusicman Jan 21, 2014 3:56 PM in response to Amaros
    Level 1 (0 points)
    Jan 21, 2014 3:56 PM in response to Amaros

    This is my first post on here - but I have exactly the same bug happening. Running latest version of Logic - Midi sounding fine. Close and re-open and B's changing to D#'s...   I've noted the work-around to export to midi and re-import and this works.. but this is seriously frustrating isn't it ! I will also report the bug to Apple... have you heard anything from them ?

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