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Date:      Wed, 29 Jul 2026 07:37:34 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 297135] graphics/drm-66-kmod: Fails with integrated AMD graphics
Message-ID:  <bug-297135-7788@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=297135

            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: x11@FreeBSD.org
          Reporter: yuri@freebsd.org
          Assignee: x11@FreeBSD.org
             Flags: maintainer-feedback?(x11@FreeBSD.org)

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            


$ pciconf -lv | grep -B4 VGA
vgapci1@pci0:113:0:0:   class=0x030000 rev=0xc1 hdr=0x00 vendor=0x1002
device=0x13c0 subvendor=0x1462 subdevice=0x7e51
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Granite Ridge [Radeon Graphics]'
    class      = display
    subclass   = 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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