Same here. Ubuntu 16.04. ASUSTek Radeon HD 5750 Formula card and Sabrent DisplayLink, with Dual Dell S2440L monitors connected to the ASUSTek card and a ViewSonic VX922 monitor connected to the Sabrent device via native DVI. Heavy flickering on the mouse cursor with updating of the DisplayLink device. I have it set up so I can see the blinking light and notice that when it flickers the mouse cursor flickers on both the primary display and the secondary display, but not the one connected to the DisplayLink device. No flickering there at all. Another problem is that responsiveness seems slower on the other displays since connecting the DisplayLink device. I ran the Unity Support test and it shows that Unity is supported.
$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD JUNIPER (DRM 2.43.0, LLVM 3.8.0) OpenGL version string: 3.0 Mesa 11.2.0 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes It is really seeming to bog down the performance of the system's other displays. It does not do that on Mac OS X or on Windows 7 or on Windows 10. Even typing has been slowed down noticeably. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1278223 Title: Mouse Flickering after adding 3rd Monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1278223/+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
