Here is what I did and tried so far:
I finished several quests in Markath, even made the Forsworn one and scaped the prision. He doesn't talk to me. So I started the bounty quest by asking in the Silver-Blood Inn if they had any jobs. I killed the guy (funny, because the Forsworn in that cave were friendly), I came back and Raerek would only talk about the bounty, no other dialogue options.
So I pulled the console, I killed him, resurrected him, enabled him, disabled him. Nothing I do works! He just doesn't talk to me, it doesn't open the dialogue box :c
I finished several quests in Markath, even made the Forsworn one and scaped the prision. He doesn't talk to me. So I started the bounty quest by asking in the Silver-Blood Inn if they had any jobs. I killed the guy (funny, because the Forsworn in that cave were friendly), I came back and Raerek would only talk about the bounty, no other dialogue options.
So I pulled the console, I killed him, resurrected him, enabled him, disabled him. Nothing I do works! He just doesn't talk to me, it doesn't open the dialogue box :c
Are you level 20? Try doing the quest for Diabella (go to her temple in Markarth, sneak into the Inner Sanctum, and talk to the lady in there).