@Matt Thanks for your test. I rechecked noble kernel again, the patch will be in Ubuntu-6.8.0-44.44.
Maybe the 6.8.0-43 got a respin. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2072428 Title: 6.8 generic & amdpgu / polaris Status in linux package in Ubuntu: In Progress Status in linux-oem-6.8 package in Ubuntu: In Progress Status in linux source package in Noble: Fix Committed Status in linux-oem-6.8 source package in Noble: Fix Released Bug description: 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 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 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 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 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2072428/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
