Hi All, A few months ago I bought a AMD RX 480 GPU and followed the Gentoo amdgpu guide and everything ran just fine with excellent graphics performance.
At the weekend I upgraded my PC from a AMD 970 chipset to a x370 chipset (fx8300 to ryzen 1700x). I re-installed Gentoo but the first time I started the boot iso the screen froze, so I tried the nomodeset option and booted ok and installed as per usual. After rebooting to new install the screen froze again and the only way to get it to boot was using kernel option nomodeset. This then gave me another problem as it could not startx (no screens found). I checked the config of the kernel (inc firmware) and could not find an issue. I then tried arch/fedora/ubuntu and all froze at boot and then worked with nomodeset. I have now gone back to using an old graphics card which uses radeon and have no problems starting xorg-server. 1) Is this likeley to be a kernel issue (amdgpu drm)? 2) Could this be a firmware issue (amd)? 3) Could this be a motherboard/processor issue? 4) Can you think of any ways round this so I can use the RX 480 gpu Any thouhgts much appreciated. John
