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