Interestingly I also have this problem, but with an nVidia card (NVIDIA Coporation GT215 Quadro FX 880M rev a2) in my Thinkpad, using the nouveau driver!
I'm using kubuntu 12.04, upgraded step by step from Lucid, and this problem happens since going to 12.04. First I had the nvidia driver installed, and ran into the memory leak and 100% CPU for xorg. After fiddling around with it more without fix, I removed (apt-get purge) the nvidia driver. I looked through the alternatives and could not find any nvidia-related stuff anymore. Yet, even with nouveau this happened. Then I re-installed all things nouveau and mesa, but still this problem happens. I also installed the nvidia- firmware package (which was missing before), no help. At the beginning Xorg takes about 20M of memory, slowly growing. It uses almost no CPU at this time (about 4% of a core occasionally). When it reaches about 70M it suddenly jumps to 100% CPU (one full core). -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/787859 Title: Xorg memory usage/leak To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/787859/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
