I also confirm that disabling KMS solves this problem. The only side effect is the load screen which is not anymore in the right resolution.
(the solution with radeonhd and « Option "MigrationHeuristic" "greedy" on » wasn't really acceptable because I couln't have acceleration...)
I also confirm that disabling KMS solves this problem. The only side effect is the load screen which is not anymore in the right resolution.
(the solution with radeonhd and « Option "MigrationHeuri stic" "greedy" on » wasn't really acceptable because I couln't have acceleration...)