Root/Documentation/fb/lxfb.txt

1[This file is cloned from VesaFB/aty128fb]
2
3What is lxfb?
4=================
5
6This is a graphics framebuffer driver for AMD Geode LX based processors.
7
8Advantages:
9
10 * No need to use AMD's VSA code (or other VESA emulation layer) in the
11   BIOS.
12 * It provides a nice large console (128 cols + 48 lines with 1024x768)
13   without using tiny, unreadable fonts.
14 * You can run XF68_FBDev on top of /dev/fb0
15 * Most important: boot logo :-)
16
17Disadvantages:
18
19 * graphic mode is slower than text mode...
20
21
22How to use it?
23==============
24
25Switching modes is done using lxfb.mode_option=<resolution>... boot
26parameter or using `fbset' program.
27
28See Documentation/fb/modedb.txt for more information on modedb
29resolutions.
30
31
32X11
33===
34
35XF68_FBDev should generally work fine, but it is non-accelerated.
36
37
38Configuration
39=============
40
41You can pass kernel command line options to lxfb with lxfb.<option>.
42For example, lxfb.mode_option=800x600@75.
43Accepted options:
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

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