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1 | [This file is cloned from VesaFB/aty128fb] | ||
2 | |||
3 | What is lxfb? | ||
4 | ================= | ||
5 | |||
6 | This is a graphics framebuffer driver for AMD Geode LX based processors. | ||
7 | |||
8 | Advantages: | ||
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 | |||
17 | Disadvantages: | ||
18 | |||
19 | * graphic mode is slower than text mode... | ||
20 | |||
21 | |||
22 | How to use it? | ||
23 | ============== | ||
24 | |||
25 | Switching modes is done using lxfb.mode_option=<resolution>... boot | ||
26 | parameter or using `fbset' program. | ||
27 | |||
28 | See Documentation/fb/modedb.txt for more information on modedb | ||
29 | resolutions. | ||
30 | |||
31 | |||
32 | X11 | ||
33 | === | ||
34 | |||
35 | XF68_FBDev should generally work fine, but it is non-accelerated. | ||
36 | |||
37 | |||
38 | Configuration | ||
39 | ============= | ||
40 | |||
41 | You can pass kernel command line options to lxfb with lxfb.<option>. | ||
42 | For example, lxfb.mode_option=800x600@75. | ||
43 | Accepted options: | ||
44 | |||
45 | mode_option - specify the video mode. Of the form | ||
46 | <x>x<y>[-<bpp>][@<refresh>] | ||
47 | vram - size of video ram (normally auto-detected) | ||
48 | |||
49 | -- | ||
50 | Andres Salomon <dilinger@debian.org> | ||