http://bugzilla.opensuse.org/show_bug.cgi?id=1177973 Bug ID: 1177973 Summary: amdgpu: kernel panic on boot upon modeset on AMD Renoir APU Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: x86-64 OS: openSUSE Tumbleweed Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: nospam20@randolf.at QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 842864 --> http://bugzilla.opensuse.org/attachment.cgi?id=842864&action=edit screenshot of kernel panic upon booting kernel-default-5.8.14 Hi All, I'm currently on kernel-default-5.8.14-1.2.x86_64 and kernel-firmware...20201005 Upon boot, my system (AMD Ryzen 5 PRO 4650G with Radeon Graphics, Gigabyte B550M AORUS PRO (rev. 1.0) - most recent bios F10, Display DELL U4320Q, 3840x2160 via displayport) frequently hangs with kernel-panic. Statistically, about one out of 5 boot-attempts are successful, sometimes it works on first attempt, sometimes it takes significantly more than 5 attempts, seems random. However, once boot was successful, I can run the computer without any stability issues the entire day. As the machine works nice apart from booting (or with nomodeset to avoid loading amdgpu), I think defective hardware can be ruled out. The only thing that does not work reliably is booting. Unfortunately I seem not to be able to get a direct log from the kernel-panic, I only managed to take a photo of the screen (attached). I also tried kernel:stable as of today: kernel-default-5.9.1-1.1.g8abc535.x86_64 plus the corresponding firmware from the same source - same result: most boot attempts lead to kernel panic. This is NOT a new problem / regression with a specific kernel or tumbleweed version, I'm experiencing these problems since I bought the Ryzen APU (plus mainboard). I did test various kernel versions starting from 5.8.x since about 2 months, all more or less the same behavior. As this is my first bug submission here, please be patient if any required information is missing, I'll try my best to deliver them upon request. Thanks! -- You are receiving this mail because: You are the assignee for the bug.