Created attachment 279995 [details] Config-4.20-rc6 Kernel 4.20.0-rc5 starts fine and is stable on my system. With the same .config I get kernel 4.20.0-rc6 in dmesg the error given above: "mc: Failed to load firmware" amdgpu / polaris11_k_mc.bin "". The GPU will not initialize and Xorg will not start. I found this e-mail: https://lists.freedesktop.org/archives/amd-gfx/2018-December/029175.html The problem is, in Linux firmware there is no polaris11_k_mc.bin. There is only one polaris11_k_smc.bin. My question: is this a typo or will polaris11_k_mc.bin be delivered soon? Thank you for your attention
Created attachment 279999 [details] dmesg-4.20.0-rc6
The patch was sent to linux-firmware a couple of weeks ago. It should land any day now. In the mean time you can grab it here: https://people.freedesktop.org/~agd5f/radeon_ucode/
Thank you for the quick hint: Now the system starts without problems. $ uname -a Linux tux 4.20.0-rc6 # 1 SMP Thu Dec 13 18:15:31 CET 2018 x86_64 AMD Ryzen 5 1600 Six-Core Processor AuthenticAMD GNU / Linux Solved