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