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ab42b818 | 1 | ============= |
c805df3d | 2 | What is lxfb? |
ab42b818 MCC |
3 | ============= |
4 | ||
5 | .. [This file is cloned from VesaFB/aty128fb] | |
6 | ||
c805df3d AS |
7 | |
8 | This is a graphics framebuffer driver for AMD Geode LX based processors. | |
9 | ||
10 | Advantages: | |
11 | ||
12 | * No need to use AMD's VSA code (or other VESA emulation layer) in the | |
13 | BIOS. | |
14 | * It provides a nice large console (128 cols + 48 lines with 1024x768) | |
15 | without using tiny, unreadable fonts. | |
16 | * You can run XF68_FBDev on top of /dev/fb0 | |
17 | * Most important: boot logo :-) | |
18 | ||
19 | Disadvantages: | |
20 | ||
21 | * graphic mode is slower than text mode... | |
22 | ||
23 | ||
24 | How to use it? | |
25 | ============== | |
26 | ||
27 | Switching modes is done using lxfb.mode_option=<resolution>... boot | |
ab42b818 | 28 | parameter or using `fbset` program. |
c805df3d | 29 | |
ab42b818 | 30 | See Documentation/fb/modedb.rst for more information on modedb |
c805df3d AS |
31 | resolutions. |
32 | ||
33 | ||
34 | X11 | |
35 | === | |
36 | ||
37 | XF68_FBDev should generally work fine, but it is non-accelerated. | |
38 | ||
39 | ||
40 | Configuration | |
41 | ============= | |
42 | ||
43 | You can pass kernel command line options to lxfb with lxfb.<option>. | |
44 | For example, lxfb.mode_option=800x600@75. | |
45 | Accepted options: | |
46 | ||
ab42b818 MCC |
47 | ================ ================================================== |
48 | mode_option specify the video mode. Of the form | |
49 | <x>x<y>[-<bpp>][@<refresh>] | |
50 | vram size of video ram (normally auto-detected) | |
51 | vt_switch enable vt switching during suspend/resume. The vt | |
52 | switch is slow, but harmless. | |
53 | ================ ================================================== | |
c805df3d | 54 | |
c805df3d | 55 | Andres Salomon <dilinger@debian.org> |