Tested again with Trusty daily-live/current CD image booted from USB stick.
Perceived perfomance is a little better but moving windows is still jerky. glxgears performance improved compared to my last test. ubuntu@ubuntu:~$ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 348 frames in 5.0 seconds = 69.121 FPS 352 frames in 5.0 seconds = 70.342 FPS 362 frames in 5.0 seconds = 72.196 FPS ubuntu@ubuntu:~$ glxgears -fullscreen Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 76 frames in 5.0 seconds = 15.138 FPS 60 frames in 5.0 seconds = 11.898 FPS 66 frames in 5.1 seconds = 12.931 FPS -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/931122 Title: [q35] 3D performance is very bad To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/931122/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs