Uvesafb

From Funtoo
This is the approved revision of this page, as well as being the most recent.
Jump to: navigation, search

Contents

[edit] How to : Framebuffer: Userspace VESA VGA graphics support

Uvesafb is an improved framebuffer driver for Linux systems with some enhancements compared to vesa.

[edit] Kernel configuration


Device Drivers ->
    <*> Connector - unified userspace <-> kernelspace linker  --->
    Graphics support ->
        [*] Support for frame buffer devices  --->
            [*] Enable firmware EDID
            Console display driver support ->
                [*] Video mode selection support
                [*] Video mode handling helpers
            Frame buffer hardware drivers
            [*] Userspace VESA VGA graphics support
Note: Build the kernel, do not install the kernel and modules. You can choose uvesafb as a module, unlike vesa.

[edit] Klibc

Next, we emerge dev-libs/klibc:

# emerge klibc

This step is necessary because klibc has to be compiled against a kernel that includes uvesafb. You need to do it only once.

[edit] v86d

sys-apps/v86d is the userspace helper that runs x86 code in emulated environment. Uvesafb will not work without v86d. Now, we emerge v86d:

# emerge v86d

[edit] Back to kernel configuration

Reconfigure the kernel:

General Setup->
[*] Initial RAM filesystem and RAM disk (initramfs/initrd) support
(/usr/share/v86d/initramfs)    Initramfs source file(s)

Rebuild the kernel: make and install it, install the modules

[edit] Bootloader configuration

add video=uvesafb:1440x900-32,mtrr:3,ywrap (or similar) to your kernel command line, like in example boot.conf

boot {
        generate grub
        default "Funtoo Linux uvesafb" 
        timeout 3 
}
  "Funtoo Linux uvesafb" { 
        kernel bzImage-uvesafb[-v]
        params += video=uvesafb:1440x900-32,mtrr:3,ywrap
}

Then run:

# boot-update

and then run:

# reboot

and enjoy uvesafb!