From: bugzilla-daemon@kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 221297] AMDGPU SMU driver interface version mismatch on R9700 - fan control broken under load
Date: Mon, 30 Mar 2026 13:01:27 +0000 [thread overview]
Message-ID: <bug-221297-2300-JnW1eW3sMi@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-221297-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=221297
--- Comment #2 from lobsterman (regbob.home@gmail.com) ---
Reporting results of kernel testing as requested.
Hardware: ASUS Turbo Radeon AI Pro R9700 32GB
vBIOS: 115-G287BP00-100
OS: Ubuntu 24.04
ROCm: 7.2.1
AMDGPU driver: 6.16.13
Current kernel: 6.17.0-19
SMU MISMATCH (persists across all tested configurations):
amdgpu 0000:2d:00.0: amdgpu: smu driver if version = 0x0000002e (46)
amdgpu 0000:2d:00.0: amdgpu: smu fw if version = 0x00000032 (50)
amdgpu 0000:2d:00.0: amdgpu: smu fw version = 0x00684b00 (104.75.0)
amdgpu 0000:2d:00.0: amdgpu: SMU driver if version not matched
KERNEL TESTING RESULTS:
Kernel 6.17.0-19:
- SMU mismatch confirmed present
- Fan does not spin under any load
- GPU reached 109C and thermally throttled during AI training with fan
physically stationary
Kernel 6.18.20 mainline:
- AMDGPU 6.16.13 DKMS fails to build against this kernel
- NVIDIA 535 DKMS fails to build against this kernel
- Kernel panics on boot: VFS: Unable to mount root fs on unknown-block(0,0)
- NVMe storage drivers absent from mainline build
- Testing blocked — system unbootable
Kernel 6.19.10 mainline:
- Same DKMS build failures as 6.18.20
- Kernel panic on boot
- Testing blocked — system unbootable
CONCLUSION:
Mainline kernel testing on 6.18.20 and 6.19.10 is not feasible on this hardware
due to VFS/NVMe boot failures in the minimal mainline builds. The SMU interface
version mismatch (driver if version 46 vs firmware if version 50) persists on
kernel 6.17 with AMDGPU 6.16.13 under ROCm 7.2.1.
A fix in the AMDGPU driver to support SMU interface version 50 is required.
Mainline kernel testing cannot be used to validate this fix on this system.
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next prev parent reply other threads:[~2026-03-30 13:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-29 16:18 [Bug 221297] New: AMDGPU SMU driver interface version mismatch on R9700 - fan control broken under load bugzilla-daemon
2026-03-30 8:51 ` [Bug 221297] " bugzilla-daemon
2026-03-30 13:01 ` bugzilla-daemon [this message]
2026-04-01 8:32 ` bugzilla-daemon
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