[Bug 2142389] Re: amdgpu (R9 380) fails to resume from suspend (deep sleep) – black screen, requires hard reboot

Same issue with my system. Tried different distros (CachyOS, Mint 22, Ubuntu 22.04, 24.04, 26.04) and all of them gave the same results. In addition, lately this bug is affecting my boot as well, screen stuck after GRUB selection, R9 380 ramping up the fans to 100% and everything frozen, tho i was able to login via SSH, the system itself couldn't even change ttys, only solution was to hard reset. This happened using X11 or wayland, at any DE (tried KDE, Gnome, Cinnamon, XFCE and ChimeraOS using SteamOS interface) Solution was to boot the system with the nomodeset parameter and install another kernel before this was a thing. 6.1.0-060100-generic is wotking fine for the moment, latest 6.1 release (6.1.176) is affected by this bug. Kernel 5.15 was fine too. Hardware specs Ryzen 7 1700 16GB DDR4 2933 ASUS TUF B450M Sapphire Nitro R9 380 4GB -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2142389 Title: amdgpu (R9 380) fails to resume from suspend (deep sleep) – black screen, requires hard reboot Status in linux package in Ubuntu: Confirmed Bug description: AMDGPU suspend → display black / no video after resume on Radeon R9 380 (No EDID read) Summary: After system suspend from Zorin OS 18 (Ubuntu 24.10 base, kernel 6.17.0-14), the system sometimes resumes but the display remains black (no signal). System continues running (fans/LEDs active), but monitor shows no output. Only hard reboot restores video. Steps to reproduce: Boot Zorin OS 18 (Ubuntu 24.10 kernel 6.17). Suspend system (e.g., via GNOME “Suspend”). Wait short period. Attempt to resume (mouse/keyboard). System wakes but display either shows garbled video or no output. Observed behavior: System appears not crashed (fans/LEDs/keyboard continue). Screen stays black or displays remnants but no usable video. Sometimes resume works, sometimes fails. Relevant log excerpt: amdgpu 0000:01:00.0: [drm] *ERROR* No EDID read. Hardware: Motherboard: Gigabyte B450 AORUS PRO WIFI CPU: AMD Ryzen 5 5500 GPU: AMD Radeon R9 380 Series (Tonga, amdgpu driver) Software environment: Zorin OS 18 Core (Ubuntu 24.10 base) kernel: 6.17.0-14-generic X11 session Workaround currently applied: Suspend disabled. System remains stable without suspend. Note: Bug appears related to video resume rather than system freeze; display subsystem (EDID handshake) may fail after suspend. Additional info: Similar reports of amdgpu black screen / suspend issues exist (e.g., Launchpad #2141216) and community discussions on black screen resume after suspend for AMD GPUs. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2142389/+subscriptions