** Description changed: The amdgpu driver fails to initialise properly due to a bug introduced when trying to fix another bug (https://gitlab.freedesktop.org/drm/amd/-/issues/2925). This bug is already being tracked on freedesktop, and I tripped over it today when rebooting a machine that hadn't been rebooted in a while. The bug on freedesktop is https://gitlab.freedesktop.org/drm/amd/-/issues/3289 (it also affects some Fedora and other Linux distros). The bug is tagged with "Polaris" but the machine that is affected here is a RX 5500. The commit that introduced the bug is https://gitlab.freedesktop.org/agd5f/linux/-/commit/466a7d115326ece682c2b60d1c77d1d0b9010b4f I got a copy of linux-source-6.8.0 and confirmed that the offending line in the code is present. The issue was not present when using the linux-image- unsigned-6.10.0-061000rc4-generic deb from kernel.ubuntu.com Here's the details of the machine in question (I've attached complete logs to not fill up the text). # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 24.04 LTS Release: 24.04 Codename: noble boot line: Linux version 6.8.0-36-generic (buildd@lcy02-amd64-077) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.2.0-23ubuntu4) 13.2.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #36-Ubuntu SMP PREEMPT_DYNAMIC Mon Jun 10 10:49:14 UTC 2024 (Ubuntu 6.8.0-36.36-generic 6.8.4) command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-36-generic root=UUID=2a38795c-259e-455e-aa40-29b51fb6dd29 ro quiet splash vt.handoff=7 subset of dmidecode: Handle 0x0000, DMI type 0, 26 bytes BIOS Information - Vendor: American Megatrends Inc. - Version: A.C0 - Release Date: 04/24/2018 - Address: 0xF0000 - Runtime Size: 64 kB - ROM Size: 16 MB - Characteristics: - PCI is supported - BIOS is upgradeable - BIOS shadowing is allowed - Boot from CD is supported - Selectable boot is supported - BIOS ROM is socketed - EDD is supported - 5.25"/1.2 MB floppy services are supported (int 13h) - 3.5"/720 kB floppy services are supported (int 13h) - 3.5"/2.88 MB floppy services are supported (int 13h) - Print screen service is supported (int 5h) - 8042 keyboard services are supported (int 9h) - Serial services are supported (int 14h) - Printer services are supported (int 17h) - ACPI is supported - USB legacy is supported - BIOS boot specification is supported - Targeted content distribution is supported - UEFI is supported - BIOS Revision: 5.13 + Vendor: American Megatrends Inc. + Version: A.C0 + Release Date: 04/24/2018 + Address: 0xF0000 + Runtime Size: 64 kB + ROM Size: 16 MB + Characteristics: + PCI is supported + BIOS is upgradeable + BIOS shadowing is allowed + Boot from CD is supported + Selectable boot is supported + BIOS ROM is socketed + EDD is supported + 5.25"/1.2 MB floppy services are supported (int 13h) + 3.5"/720 kB floppy services are supported (int 13h) + 3.5"/2.88 MB floppy services are supported (int 13h) + Print screen service is supported (int 5h) + 8042 keyboard services are supported (int 9h) + Serial services are supported (int 14h) + Printer services are supported (int 17h) + ACPI is supported + USB legacy is supported + BIOS boot specification is supported + Targeted content distribution is supported + UEFI is supported + BIOS Revision: 5.13 Handle 0x0002, DMI type 2, 15 bytes Base Board Information - Manufacturer: Micro-Star International Co., Ltd. - Product Name: B350M PRO-VDH (MS-7A38) - Version: 2.0 - Serial Number: XXXXXXXXXXX - Asset Tag: To be filled by O.E.M. - Features: - Board is a hosting board - Board is replaceable - Location In Chassis: To be filled by O.E.M. - Chassis Handle: 0x0003 - Type: Motherboard - Contained Object Handles: 0 + Manufacturer: Micro-Star International Co., Ltd. + Product Name: B350M PRO-VDH (MS-7A38) + Version: 2.0 + Serial Number: XXXXXXXXXXX + Asset Tag: To be filled by O.E.M. + Features: + Board is a hosting board + Board is replaceable + Location In Chassis: To be filled by O.E.M. + Chassis Handle: 0x0003 + Type: Motherboard + Contained Object Handles: 0 Handle 0x0004, DMI type 9, 17 bytes System Slot Information - Designation: J6B2 - Type: x16 PCI Express - Current Usage: In Use - Length: Long - ID: 0 - Characteristics: - 3.3 V is provided - Opening is shared - PME signal is supported - Bus Address: 0000:00:01.0 + Designation: J6B2 + Type: x16 PCI Express + Current Usage: In Use + Length: Long + ID: 0 + Characteristics: + 3.3 V is provided + Opening is shared + PME signal is supported + Bus Address: 0000:00:01.0 Handle 0x0014, DMI type 4, 48 bytes Processor Information - Socket Designation: AM4 - Type: Central Processor - Family: Zen - Manufacturer: Advanced Micro Devices, Inc. - ID: 82 0F 80 00 FF FB 8B 17 - Signature: Family 23, Model 8, Stepping 2 - Flags: - FPU (Floating-point unit on-chip) - VME (Virtual mode extension) - DE (Debugging extension) - PSE (Page size extension) - TSC (Time stamp counter) - MSR (Model specific registers) - PAE (Physical address extension) - MCE (Machine check exception) - CX8 (CMPXCHG8 instruction supported) - APIC (On-chip APIC hardware supported) - SEP (Fast system call) - MTRR (Memory type range registers) - PGE (Page global enable) - MCA (Machine check architecture) - CMOV (Conditional move instruction supported) - PAT (Page attribute table) - PSE-36 (36-bit page size extension) - CLFSH (CLFLUSH instruction supported) - MMX (MMX technology supported) - FXSR (FXSAVE and FXSTOR instructions supported) - SSE (Streaming SIMD extensions) - SSE2 (Streaming SIMD extensions 2) - HTT (Multi-threading) - Version: AMD Ryzen 5 2600 Six-Core Processor - Voltage: 1.1 V - External Clock: 100 MHz - Max Speed: 3900 MHz - Current Speed: 3400 MHz - Status: Populated, Enabled - Upgrade: Socket AM4 - L1 Cache Handle: 0x0011 - L2 Cache Handle: 0x0012 - L3 Cache Handle: 0x0013 - Serial Number: Unknown - Asset Tag: Unknown - Part Number: Unknown - Core Count: 6 - Core Enabled: 6 - Thread Count: 12 - Characteristics: - 64-bit capable - Multi-Core - Hardware Thread - Execute Protection - Enhanced Virtualization - Power/Performance Control + Socket Designation: AM4 + Type: Central Processor + Family: Zen + Manufacturer: Advanced Micro Devices, Inc. + ID: 82 0F 80 00 FF FB 8B 17 + Signature: Family 23, Model 8, Stepping 2 + Flags: + FPU (Floating-point unit on-chip) + VME (Virtual mode extension) + DE (Debugging extension) + PSE (Page size extension) + TSC (Time stamp counter) + MSR (Model specific registers) + PAE (Physical address extension) + MCE (Machine check exception) + CX8 (CMPXCHG8 instruction supported) + APIC (On-chip APIC hardware supported) + SEP (Fast system call) + MTRR (Memory type range registers) + PGE (Page global enable) + MCA (Machine check architecture) + CMOV (Conditional move instruction supported) + PAT (Page attribute table) + PSE-36 (36-bit page size extension) + CLFSH (CLFLUSH instruction supported) + MMX (MMX technology supported) + FXSR (FXSAVE and FXSTOR instructions supported) + SSE (Streaming SIMD extensions) + SSE2 (Streaming SIMD extensions 2) + HTT (Multi-threading) + Version: AMD Ryzen 5 2600 Six-Core Processor + Voltage: 1.1 V + External Clock: 100 MHz + Max Speed: 3900 MHz + Current Speed: 3400 MHz + Status: Populated, Enabled + Upgrade: Socket AM4 + L1 Cache Handle: 0x0011 + L2 Cache Handle: 0x0012 + L3 Cache Handle: 0x0013 + Serial Number: Unknown + Asset Tag: Unknown + Part Number: Unknown + Core Count: 6 + Core Enabled: 6 + Thread Count: 12 + Characteristics: + 64-bit capable + Multi-Core + Hardware Thread + Execute Protection + Enhanced Virtualization + Power/Performance Control lspci: 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) I/O Memory Management Unit 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 59) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7 03:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset USB 3.1 xHCI Controller (rev 02) 03:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset SATA Controller (rev 02) 03:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43b2 (rev 02) 16:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 16:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 16:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 16:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1b:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller (rev 15) 1f:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch (rev c5) 20:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch 21:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 14 [Radeon RX 5500/5500M / Pro 5500M] (rev c5) 21:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio 22:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function 22:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor (PSP) 3.0 Device 22:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0 xHCI Compliant Host Controller 23:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function 23:00.2 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) 23:00.3 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller + + + SRU Justification: + ============== + [Impact] + AMD GPUs like RX580 and RX5500 failed to be initialized after + commit: 466a7d115326 ("drm/amd: Use the first non-dGPU PCI device for BW limits") + The screen stays blank. + + [Fix] + Set the current speed/width on devices. + Upstream fix: + ba46b3bda296 ("drm/amdgpu: Adjust logic in amdgpu_device_partner_bandwidth()") + + [Test] + Bug reporter tested on hardware, amdgpu works fine. + Also verified on AMD iGPU of laptop by myself. glmark2 works fine. + + [Where problems could occur] + It may break amdgpu.
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