I'm not sure, if it is correct to post here, but I had a similar problems since I updated to ubuntu 14.04 LTS (x86_64k). Sometimes I had more than 500MB for each compiz and xorg, which once summed up in 1,2 GB. The system was very slow, then I even thought it had been freezed (but it wasn't), even with a total memory of 4 GB. I used the drivers form http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu, installed the newest kernel, nothing seemed to help.
Finally I tried installing xserver-xorg-video-ati , which hadn't been installed, and voila now the system is fast again as it should be, although it seems as if the same driver (radeon) is used. Current system: Ubuntu 14.04 LTS (x86_64k), kernel 3.14.1, [AMD/ATI] RS880 [Radeon HD 4250], radeon graphic driver ( recent drivers from: http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu ) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/870042 Title: Memory leak in compiz (and maybe Xorg) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/870042/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
