Hi, I wish to debug the amdgpu driver with regards to plugging and unplugging display port cables and screens. So, I would like to see the plug/unplug events, the negotiation of link parameters: swing / pre-emphasis. I have a display that is not sensed on a particular laptop running Linux with the amdgpu driver, whereas the same display and cable works fine on a different laptop with an intel GPU. I think there is a bug in the amdgpu driver, but I need some extra debug output, but just for the plug/unplug/link negotiation. Please can someone point me to which debug variable to tweak to get the debug messages I need, without being flooded with too many messages. Kind Regards James
