I have the same problem. Notebook: Lenovo T420, Intel HD Graphics 3000 After starting Ubuntu everything works fine. If I use Google Maps in Chromium/Firefox or working some time with LibreOffice the graphic begins to stutter. Even if I only move a window for one end of the screen to the other it jerky (anything but smoothly).
Yesterday I updated the BIOS to 2013-07-05 (latest version) but it did not help. The only thing that helps is a reboot. Please let me know if you need more information. Best Tino -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1236653 Title: [Lenovo ThinkPad T420] Graphics performance reduced after playing games for a little bit To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1236653/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
