On 2010-03-07 18:53, Mick wrote: > Good news! I seem to have solved it somehow ... it started showing up after > I > configured the framebuffer for the VTs. Could this be related? Is it now > using the fb to render X, or the radeon driver? How can I tell? (glxgears > is > 4 times slower than in Knoppix)
If you are using the framebuffer then X is not using the graphic cards hardware to move things about; it's the CPU that will have to do the transformations etc. Hence it's slow(er). I am not up to speed when it comes to the open source drivers (radeon/radeonhd) or their status as gentoo packages but you need proper kernel support for them to work (drm-module) and matching support in libdrm, mesa and the X server for 3D to work (DRI). How to setup is explained here (disclaimer: I don't know how up-to-date this is): http://www.x.org/wiki/radeonhd%3Aexperimental_3D and http://en.gentoo-wiki.com/wiki/RadeonHD If that doesn't work for you I would recommend using the proprietary driver (fglrx): http://www.gentoo.org/doc/en/ati-faq.xml http://www.gentoo.org/doc/en/dri-howto.xml (emerge ati-drivers etc...) HTH Best regards Peter K
