Hello I have NVIDIA Jetson Nano Developer Kit Monitor 2560x1440 connected with displayport or HDMI OS Armbian(armbian.com) ubuntu 21.04 linux 5.15.0-rc2 and tegra_drm driver isn't working from time to time (after cold boot or restart) All works fine with L4T kernel log https://pastebin.com/raw/U9AYq5Vg I also made issue on gitlab https://gitlab.freedesktop.org/drm/nouveau/-/issues/117 Best regards Michal Lazo xlazom00@xxxxxxxxx