I have downloaded the 13.10 Desktop version to bootable USB. When run "Live" all is OK, but when installed, graphics performance is 'dismal' (compiz proc at >70% when idle). In Live mode, 'Details' reports an Intel GD MMX/SSE2 driver but when installed it reports Gallium 0.4. I assume this is the issue. How can I get back to the driver that works? Device is Intel ATOM with GMA 3150 graphics.