0001 =============
0002 What is lxfb?
0003 =============
0004
0005 .. [This file is cloned from VesaFB/aty128fb]
0006
0007
0008 This is a graphics framebuffer driver for AMD Geode LX based processors.
0009
0010 Advantages:
0011
0012 * No need to use AMD's VSA code (or other VESA emulation layer) in the
0013 BIOS.
0014 * It provides a nice large console (128 cols + 48 lines with 1024x768)
0015 without using tiny, unreadable fonts.
0016 * You can run XF68_FBDev on top of /dev/fb0
0017 * Most important: boot logo :-)
0018
0019 Disadvantages:
0020
0021 * graphic mode is slower than text mode...
0022
0023
0024 How to use it?
0025 ==============
0026
0027 Switching modes is done using lxfb.mode_option=<resolution>... boot
0028 parameter or using `fbset` program.
0029
0030 See Documentation/fb/modedb.rst for more information on modedb
0031 resolutions.
0032
0033
0034 X11
0035 ===
0036
0037 XF68_FBDev should generally work fine, but it is non-accelerated.
0038
0039
0040 Configuration
0041 =============
0042
0043 You can pass kernel command line options to lxfb with lxfb.<option>.
0044 For example, lxfb.mode_option=800x600@75.
0045 Accepted options:
0046
0047 ================ ==================================================
0048 mode_option specify the video mode. Of the form
0049 <x>x<y>[-<bpp>][@<refresh>]
0050 vram size of video ram (normally auto-detected)
0051 vt_switch enable vt switching during suspend/resume. The vt
0052 switch is slow, but harmless.
0053 ================ ==================================================
0054
0055 Andres Salomon <dilinger@debian.org>
