Comeau (upper body) was placed on injured reserve retroactive to Oct. 7 on Wednesday, Mike Heika of the Stars' official site reports.
Comeau didn't make the trip for the start of Dallas' four-game road trip, which will kick off Thursday night against the Rangers, but he may join the team on the road if he's able to overcome his upper-body injury by Tuesday. The 35-year-old vet picked up 14 points in 51 games last season.