Sebastien, downgrade to mesa 7.5 (https://edge.launchpad.net/~ubuntu-x-swat/+archive/x-retro) and see if that solves it for you.
Sebastien, downgrade to mesa 7.5 (https:/ /edge.launchpad .net/~ubuntu- x-swat/ +archive/ x-retro) and see if that solves it for you.