ok, in my case it seems to have indeed been a specific application. I killed it - CPU usage was back to normal. Memory was not freed though. I am not sure if this application hasn't been updated between 11.10 and 12.04, so I cannot say if a change in xorg or a change in teh application caused it though. (I was finally so frustrated I started killing apps when I found it...)
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/787859 Title: Xorg memory usage/leak Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Bug description: For some reason, with nvidia-current (270.41.06) installed, Xorg uses around 600M of ram when just started, with an idle desktop. No effects or anything enabled. Also, it seems to leak memory as after some use, its memory use goes up to around 1G, at which point the system gets horribly slow. Still later, when the entire 2G of ram and 6G of swap are used up, the system crashes. I.e., not really usable. Now, when i manually install the 270.41.19 driver, this reduces memory use somewhat, with an idle desktop just after starting its down to 80M. But after some time and use (firefox etc open) this easily climbs back to 500M but doesnt seem to leak anymore. Kubuntu 11.04, 2.6.38-8, x64, 7600GT 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/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

