I have the same problem on Debian Lenny as well. With fresh compiled radeon drivers :
drivers : (II) Module radeon: vendor="X.Org Foundation" compiled for 1.4.2, module version = 6.12.99 board : ATI Technologies Inc RV280 [Radeon 9200 SE] The problem didn't occured in etch with default drivers (or was really less unnoying) I haven't found other non-java application with the problem yet, so it has to do with radeon+java Running with "vesa" xorg driver solves the problem, but it's not a solution. I'm also a josm user and got the same message as you do. Note that I've managed to ease my pain a bit with http://www.linuxinsight.com/your-ati-radeon-very-slow-on-xorg-x-server-1.3.html But I don't feel it really solves the core problem -- Slow graphics/animation in Java, Xorg uses 100% cpu https://bugs.launchpad.net/bugs/250931 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs