I am having issues with Radeon HD 6450, with both proprietary and open source drivers. I don't have issues on Ubuntu 12.04, but everything after that yes. Tried both Ubuntu 13.10 and 14.04. I switched to my integrated Intel HD 2000, and didn't have issues.
-- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/874619 Title: Dragging windows around is slow/sluggish/laggy when multiple monitors are enabled Status in Ubutter: Making Ubuntu buttery smooth: Fix Released Status in Unity: Fix Released Status in Unity 5.0 series: Fix Released Status in “unity” package in Ubuntu: Fix Released Status in “unity” source package in Precise: Fix Released Bug description: [Test Case] A performance fix, just make sure that icon movement is fast. [Regression Potential] Visual regressions, shell drawing problems. Big change, many regression potentials. Original description: Description: Ubuntu 11.10 / 3.0.0-12-generic #20-Ubuntu Quadro NVS 290 - Dual screen Display is too slow to be usable. Moving windows or icon is sluggish. Switching from Nouveau to Nvidia proprietary driver helps a bit but the issue is the same. I found 2 ways to "fix" this issue: * disabling Ubuntu Unity Plugin in CompizConfig Setting Manager * disabling one screen Disabling "Sync to VBlank" doesn't help Upgrading the nvidia driver with ppa:ubuntu-x-swat doesn't help To manage notifications about this bug go to: https://bugs.launchpad.net/ubutter/+bug/874619/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp