https://bugzilla.kernel.org/show_bug.cgi?id=215492

Bug ID: 215492 Summary: amdgpu si_support no longer working in 5.16 Product: Drivers Version: 2.5 Kernel Version: 5.16 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: knut.tidemann@gmail.com Regression: No

After installing kernel 5.16 from the Arch Linux repository and booting it up I can no longer get amdgpu to work on my Sea Islands card.

This is the output I get from the kernel:

Jan 14 11:41:43 kyle kernel: Command line: initrd=\amd-ucode.img initrd=\initramfs-linux.img root="LABEL=arch" radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1 amdgpu.dc=1 Jan 14 11:41:43 kyle kernel: Kernel command line: initrd=\amd-ucode.img initrd=\initramfs-linux.img root="LABEL=arch" radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1 amdgpu.dc=1 Jan 14 11:41:43 kyle kernel: ACPI: bus type drm_connector registered Jan 14 11:41:43 kyle kernel: [drm] amdgpu kernel modesetting enabled. Jan 14 11:41:43 kyle kernel: amdgpu: Ignoring ACPI CRAT on non-APU system Jan 14 11:41:43 kyle kernel: amdgpu: Virtual CRAT table created for CPU Jan 14 11:41:43 kyle kernel: amdgpu: Topology: Add CPU node Jan 14 11:41:43 kyle kernel: [drm] Unsupported asic. Remove me when IP discovery init is in place.

Rebooting with kernel 5.15.14 and the same kernel command line arguments works fine.

My card is a Radeon R9 280X (taken on 5.15.14): 09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Tahiti XTL [Radeon R9 280X DirectCU II TOP] Flags: bus master, fast devsel, latency 0, IRQ 100, IOMMU group 23 Memory at e0000000 (64-bit, prefetchable) [size=256M] Memory at fce00000 (64-bit, non-prefetchable) [size=256K] I/O ports at e000 [size=256] Expansion ROM at fce40000 [disabled] [size=128K] Capabilities: [48] Vendor Specific Information: Len=08 <?> Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Capabilities: [270] Secondary PCI Express Capabilities: [2b0] Address Translation Service (ATS) Capabilities: [2c0] Page Request Interface (PRI) Capabilities: [2d0] Process Address Space ID (PASID) Kernel driver in use: amdgpu Kernel modules: radeon, amdgpu

Please let me know if I can add any more information.