Sunday, March 08, 2009

Using framebuffer on Ubuntu

https://wiki.ubuntu.com/FrameBuffer
http://cha.homeip.net/blog/archives/2008/12/_ubuntu_framebu.html
http://ubuntuforums.org/showthread.php?t=124036

Ubuntu default disable framebuffer driver, so need to comment it in module blacklist. And need to use hwinfo tool to check machine fb information. If you got the support mode, you can add "vga=0x323" in grub kernel command line.

The kernel boot message will show something like:

vesafb: framebuffer at 0xc0000000, mapped to 0xf8880000, using 6144k, total 16384k
vesafb: mode is 1024x768x32, linelength=4096, pages=4
vesafb: protected mode interface info at c000:ab00
vesafb: pmi: set display start = c00cab88, set palette = c00cac44
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0


[Note] $ sudo hwinfo --framebuffer

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