Getting Radeon graphics card to work

D'Arcy Cain darcy at
Tue Aug 25 15:48:33 UTC 2020

I am getting "Cannot run in framebuffer mode. Please specify busIDs for all
framebuffer devices" on my new laptop.  I search the net but none of the
suggestions seem to help.  I am running 12.1-RELEASE-p8.  Here is what
"pciconf -lv" says:

vgapci0 at pci0:3:0:0:     class=0x030000 card=0x18211043 chip=0x15d81002
rev=0xc4 hdr=0x00
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Picasso'
    class      = display
    subclass   = VGA

Here is what I see in dmesg:

[drm] radeon kernel modesetting enabled.
CPU: AMD Ryzen 3 3200U with Radeon Vega Mobile Gfx   (2595.20-MHz K8-class CPU)

I tried adding this to /usr/local/share/pciids/pci.ids but I don't know what
to put for the subdevice.  I tried just putting zeroes but that didn't
change anything:

    15d8  Picasso
        1002 0000  Asus VivoBook
        103c 8615  Pavilion Laptop 15-cw1xxx
        17aa 5124  ThinkPad E595

I have tried kldloading radeonkms, i915kms and amdgpu.  I believe it is that
last one that I need but none of them helped.

Can anyone tell me if this arrangement should be able to work?

D'Arcy J.M. Cain <darcy at>         |  Democracy is three wolves                |  and a sheep voting on
+1 416 788 2246     (DoD#0082)    (eNTP)   |  what's for dinner.
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