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AMDGPU(4)             DragonFly Kernel Interfaces Manual             AMDGPU(4)


NAME

     amdgpu - Driver for newer AMD graphics chipsets


DESCRIPTION

     The amdgpu driver provides support for the newer AMD graphics chips,
     beginning with the Arctic Islands/Polaris family (Radeon RX 400 series).
     Please refer to the Loader Tunables section in syscons(4) for more
     information about how to make the console work with amdgpu.

     In order to use the driver one needs to install the sysutils/devfw-amdgpu
     package available in dports(7).


EXAMPLES

     Section "Device"
             Identifier "Screen0"
             Driver "modesetting"
             Option "kmsdev" "/dev/dri/card0"
             Option "AccelMethod" "None"
     EndSection


LOADER TUNABLES

     Tunables can be set at the loader(8) prompt before booting the kernel or
     stored in loader.conf(5).

     drm.amdgpu.cik_support
             Enable/Disable support for CIK GPU generation (KAVERI, BONAIRE,
             HAWAII, KABINI, and MULLINS). These GPUs are handled by the
             radeon(4) driver by default.  1 = enable, 0 = disable (default)


SEE ALSO

     drm(4), radeon(4) syscons(4)


HISTORY

     The amdgpu driver was first available for Linux.


CAVEATS

     Currently, only the modesetting driver is supported for Xorg(1).

     When using the optional support for CIK GPUs, it may be necessary to use
     the drm.video.<connector> tunable documented in the LOADER TUNABLES
     section in drm(4) to force a console framebuffer in 16bpp or 32bpp mode.
     This is due to amdgpu sometimes defaulting to an 8bpp framebuffer console
     which is currently not supported in syscons(4).

DragonFly 6.5-DEVELOPMENT      January 17, 2026      DragonFly 6.5-DEVELOPMENT

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