I tried install this driver for RX 550 (https://drivers.amd.com/drivers/linux/amdgpu-pro-18.50-756341-ubuntu-18.04.tar.xz) 3 times and after installation the system doesn't begin, it just hold on a black screen saying: [ 8.6668039] ccp 0000:08:00:02: sev command 0x4 timed out, disabling PSP [ 8.6668075] ccp 0000:08:00:02: SEV: failed to get status. Error: 0x0 In that screen system doesn't answer any command. If I change to tty2 (ctrl+alt+f2) I could login on the terminal e do amdgpu-uninstall and reboot (it works one time) and system would start normally. So I couldn't fix that I had to reinstall the hole system (Kubuntu). Base-Board: GA-A320M-S2H BIOS version: F24 CPU: Ryzen 5 2600 GPU: RX 550 4GT - MSI RAM: 8Gb HyperX Fury Font: Bluecase 500W
Does it help if you disable SEV in your kernel config?
Created attachment 143972 [details] Installation log for amdgpu-install
Created attachment 143973 [details] Basic system configuration before amggpu-install
Created attachment 143974 [details] Detailed system configuration before amdgpu-install
Created attachment 143975 [details] Basic system configuration after amggpu-install
Created attachment 143976 [details] Detailed system configuration after amdgpu-install
@Alex Deucher, I will try and post results here later
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