[Bug 297135] graphics/drm-66-kmod: Fails with integrated AMD graphics

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D297135

            Bug ID: 297135
           Summary: graphics/drm-66-kmod: Fails with integrated AMD
                    graphics
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: [email protected]
          Reporter: [email protected]
          Assignee: [email protected]
             Flags: maintainer-feedback?([email protected])

This port fails with the AMD graphics controller on X870 Tomahawk MB.

Graphics starts but it prints the following into the system log.

$ sysctl hw.model
hw.model: AMD Ryzen 9 9950X 16-Core Processor=20=20=20=20=20=20=20=20=20=20=
=20=20


$ pciconf -lv | grep -B4 VGA
vgapci1@pci0:113:0:0:   class=3D0x030000 rev=3D0xc1 hdr=3D0x00 vendor=3D0x1=
002
device=3D0x13c0 subvendor=3D0x1462 subdevice=3D0x7e51
    vendor     =3D 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     =3D 'Granite Ridge [Radeon Graphics]'
    class      =3D display
    subclass   =3D VGA




[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0
[drm] Fence fallback timer expired on ring gfx_0.0.0

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