I recently upgraded a 12.04 LTS Wubi installation to 13.10. The Unity Dash is nearly impossible to use on 13.10 due to the immense amount of lag it produces when opening, taking about 8 seconds to open, frame by frame. Typing is recognized at an average of two letters per second. On top of that the top area of the screen is flashing with slightly slanted yellow and black lines (lack of a better description) while it is open.
I am used a modified Dell Latitude D610, with 1GB of RAM and an (as recognized by Windows) ATI Radeon Mobility X300 graphics card. Output from
/usr/lib/nux/unity_support_test -p says Unity 3D is supposed to run fine:
OpenGL vendor string: X.Org R300 Project OpenGL renderer string: Gallium 0.4 on ATI RV370 OpenGL version string: 2.1 Mesa 9.2.1 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
Something obviously changed in the way Unity renders the Dash. Is there a way to revert to the old rendering? Upgrade to a different driver? I don't know.