OK, found the problem. Actually this turns out to be well known problem with current nvidia drivers. The workaround is to turn powermizer off. Create a file called /etc/modprobe.d/nvidia.conf with this in it:
options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222" I am opening a request that this should be provided as an option in the nvidia driver package. -- nvidia 185.18.36 completely unusable https://bugs.launchpad.net/bugs/442345 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
