Subject: Kernel regression confirmed between 6.12.0 and 6.13.0 – system freeze on AMD Radeon R9 380 (Tonga)
Hello, After performing the requested testing, I was able to reproduce and isolate the regression related to system freezes and suspend issues on my system. System information Hardware: * CPU: AMD Ryzen 5 5500 * GPU: AMD Radeon R9 380 (Tonga) – 4GB VRAM * Motherboard: Gigabyte B450 Aorus Pro WiFi * RAM: 16GB DDR4 * Distribution: Zorin OS (Ubuntu-based) Summary of results Kernel 6.12.0 * System works correctly. * Suspend/resume works reliably (tested multiple short and long suspend cycles). * No freezes observed. * General desktop usage is stable. Kernel 6.13.0 * System becomes unstable during normal desktop usage. * I experienced multiple complete system freezes (screen, mouse and keyboard stop responding). * Forced reboot was required. Observed kernel errors (journalctl) Examples from the logs: * amdgpu errors: *ERROR* No EDID read * memory corruption warnings: BUG: Bad page state in process * CPU stall / watchdog: watchdog: BUG: soft lockup - CPU stuck These freezes happened during normal desktop usage while the web browser was open (watching a YouTube video). The system is normally capable of handling this workload without issues. Conclusion Based on these tests, the regression appears to occur between: Kernel 6.12.0 (stable on my system) and Kernel 6.13.0 (system freeze and instability) This strongly suggests that the issue was introduced somewhere between these versions. Current status I am currently running kernel 6.12.0, which is fully stable on my hardware. I am willing to test additional kernels if it is technically useful for narrowing down the issue further. If needed, please indicate a specific version or commit to test and I will gladly run it and report the results. My intention is to migrate to a newer kernel once the issue is fully resolved. As soon as the problem is fixed, I will confirm here that the newer kernel works correctly on my system. Thank you for the work on this issue and for your guidance during testing. Best regards. Relevant kernel log excerpts journalctl -k -b -1 -p 3 ACPI BIOS Error (bug): Failure creating named object ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog amdgpu 0000:01:00.0: [drm] *ERROR* No EDID read. BUG: Bad page state in process fuse mainloop BUG: Bad page state in process python3 BUG: Bad page state in process Chrome_ChildIOT BUG: Bad page state in process ffmpeg watchdog: BUG: soft lockup - CPU#1 stuck watchdog: BUG: soft lockup - CPU#5 stuck rcu: INFO: rcu_preempt self-detected stall on CPU Relevant amdgpu messages (dmesg) amdgpu kernel modesetting enabled amdgpu: ATOM BIOS: 113-380X4DB71-W80 amdgpu 0000:01:00.0: [drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS with error code 4 amdgpu 0000:01:00.0: [drm] *ERROR* No EDID read. amdgpu: VRAM: 4096M amdgpu: GART: 1024M [drm] Initialized amdgpu 3.59.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2142389 Title: amdgpu (R9 380) fails to resume from suspend (deep sleep) – black screen, requires hard reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2142389/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
