I had very similar problems with unity (latest ubuntu 11.04) + nvidia (latest driver from the official repositories). The PC is a "Foxconn NetBox-nT330i Nettop" (Intel Atom 330 with NVIDIA ION chipset) with two monitors (TwinView 2x1920x1080):
As soon as I open a terminal, or kile, etc. the Xorg process rises up to 100% CPU power, which slows down all processing, e.g., typing needs about 50-500 ms after each keypress, dragging&dropping a maximized window from one monitor to the others laggs a lot, and so on. The system was near to be unuseable. So, I gave it a last try: The Intel Atom 330 provides 64bit instructions, but I had a 32bit ubuntu installed. Today, I installed ubuntu 11.04 64bit. And now all works as it should (and as it was before with older 32 bit ubuntus)! No more typing delay, and no more Xorg process raising to 100% CPU power. The system responses very fast! So, at least on my PC, this problem seems to be somehow related to 32/64 bit combinations of CPU, ubuntu and perhaps the nvidia driver (due to 3D-requesting unity). -- 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/776198 Title: xorg and nvidia give very bad performance on multi display setup after update to ubuntu 11.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/776198/+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
