I've been trying to figure this one out and I see some similarities to this thread, but it isn't quite the same: https://lmms.io/forum/viewtopic.php?f=7&t=30807&p=64302&hilit=crash#p64302 . I'm not on Ubuntu or Mint, but rather Debian Testing which they're both derivatives of. Long story...
Does that allow you have two open piano rolls though? The Song Editor view of them doesn't appear large enough to see the details.Mr_LMMS_user wrote: ↑Mon Oct 21, 2019 12:23 amI usually just copy one piano roll and paste it to the top or the bottom of the second one and then I can use that as a guide and then just delete it later.