Farkas won't give me any quests. There isn't even a topic unless I already have a quest from his brother Varkas and then he just tells me to finish that first. Anyone else with this problem? Any fixes?

I've got the same problem, I've done all the companion main quests but am stuck on the radiant quests Vilkas & The Huntress keep on giving me the same quests over and over again but I get no quests from Farkas.