1============= 2What is gxfb? 3============= 4 5.. [This file is cloned from VesaFB/aty128fb] 6 7This is a graphics framebuffer driver for AMD Geode GX2 based processors. 8 9Advantages: 10 11 * No need to use AMD's VSA code (or other VESA emulation layer) in the 12 BIOS. 13 * It provides a nice large console (128 cols + 48 lines with 1024x768) 14 without using tiny, unreadable fonts. 15 * You can run XF68_FBDev on top of /dev/fb0 16 * Most important: boot logo :-) 17 18Disadvantages: 19 20 * graphic mode is slower than text mode... 21 22 23How to use it? 24============== 25 26Switching modes is done using gxfb.mode_option=<resolution>... boot 27parameter or using `fbset` program. 28 29See Documentation/fb/modedb.rst for more information on modedb 30resolutions. 31 32 33X11 34=== 35 36XF68_FBDev should generally work fine, but it is non-accelerated. 37 38 39Configuration 40============= 41 42You can pass kernel command line options to gxfb with gxfb.<option>. 43For example, gxfb.mode_option=800x600@75. 44Accepted options: 45 46================ ================================================== 47mode_option specify the video mode. Of the form 48 <x>x<y>[-<bpp>][@<refresh>] 49vram size of video ram (normally auto-detected) 50vt_switch enable vt switching during suspend/resume. The vt 51 switch is slow, but harmless. 52================ ================================================== 53 54Andres Salomon <dilinger@debian.org> 55