Dr. Dre never asked Suge Knight for permission to include his likeness in the movie "Straight Outta Compton" ... and that sparked the fight which ended with the alleged murder in a parking lot.
Sources connected to Suge tell TMZ ... he got word he was included in the film, and wanted to talk to Dre about how he was being portrayed. As we've reported ... Suge's friend Terry Carter helped set up the meeting.
As for what Suge was so worried about -- a new trailer for the movie was just released, and there is a character whupping someone's ass in a studio ... who looks just like Suge.
TMZ broke the story ... Suge and Dre's sit-down never happened because Suge got into a fight with actor Cle "Bone" Sloan ... and eventually backed up over him and Carter.