When attempting to run CrOS/Chrome on Linux/Nvidia/Nouveau like this:

sudo chvt 8; EGL_PLATFORM=surfaceless $CHROMIUM_SRC/out/Nouveau/chrome --ozone-platform=gbm --force-system-compositor-mode --login-profile=user --user-data-dir=$HOME/.config/google-chrome-gbm --ui-prioritize-in-gpu-process --use-gl=egl --gpu-sandbox-failures-fatal=yes --enable-wayland-server --login-manager --ash-constrain-pointer-to-root --default-tile-width=512 --default-tile-height=512 --system-developer-mode --crosh-command=/bin/bash

Chrome fails when attempting to initialize the GPU process because it sandbox setup and thread creation happen in the wrong order. I presume that the Nouveau driver creates additional threads at an inopportune time.