gxfb.rst 1.4 KB

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  1. =======================================
  2. gxfb - AMD Geode GX2 framebuffer driver
  3. =======================================
  4. This is a graphics framebuffer driver for AMD Geode GX2 based processors.
  5. Advantages:
  6. * No need to use AMD's VSA code (or other VESA emulation layer) in the
  7. BIOS.
  8. * It provides a nice large console (128 cols + 48 lines with 1024x768)
  9. without using tiny, unreadable fonts.
  10. * You can run XF68_FBDev on top of /dev/fb0
  11. * Most important: boot logo :-)
  12. Disadvantages:
  13. * graphic mode is slower than text mode...
  14. How to use it?
  15. ==============
  16. Switching modes is done using gxfb.mode_option=<resolution>... boot
  17. parameter or using `fbset` program.
  18. See Documentation/fb/modedb.rst for more information on modedb
  19. resolutions.
  20. X11
  21. ===
  22. XF68_FBDev should generally work fine, but it is non-accelerated.
  23. Configuration
  24. =============
  25. You can pass kernel command line options to gxfb with gxfb.<option>.
  26. For example, gxfb.mode_option=800x600@75.
  27. Accepted options:
  28. ================ ==================================================
  29. mode_option specify the video mode. Of the form
  30. <x>x<y>[-<bpp>][@<refresh>]
  31. vram size of video ram (normally auto-detected)
  32. vt_switch enable vt switching during suspend/resume. The vt
  33. switch is slow, but harmless.
  34. ================ ==================================================
  35. Andres Salomon <dilinger@debian.org>