Clone this repo:
  1. 97f1843 Fix: typo inverting size of working area height and width by Lucas Berthou · 6 weeks ago factory-14778.B factory-firmware-ti50-guc-14778.B main release-R103-14816.B stabilize-14771.B stabilize-14790.B stabilize-14803.B stabilize-14839.B
  2. daa2883 GBM: fixing hack that allows to run current configuration of croscomp on by Lucas Berthou · 6 weeks ago
  3. 6a43cc8 Drop client list from wl_display by Kristian H. Kristensen · 9 weeks ago release-R102-14695.B stabilize-14633.B stabilize-14682.B stabilize-voshyr-14637.B
  4. 7db3ed2 Move event loop out of wl_display by Kristian H. Kristensen · 9 weeks ago
  5. ad0a11d Handle client socket data in tokio async task by Kristian H. Kristensen · 9 weeks ago


Compositor for ChromeOS


Build using portage

$ mkdir ~/trunk/src/third_party/chromiumos-overlay/chromeos-base/croscomp

$ ln -s  ../../../../platform/croscomp/croscomp-9999.ebuild \

$ emerge-$BOARD croscomp

Building in the CrOS SDK

$ export BOARD=strongbad

$ setup_board --board=$BOARD

C deps:

$ emerge-$BOARD libxkbcommon wayland pixman libdrm mtdev wayland-protocols cairo mesa-freedreno minigbm lcms pango opengles-headers

Rust deps:

$ emerge-$BOARD bitflags bindgen libloading nix smallvec xml-rs downcast-rs parking_lot_core lock_api owning_ref parking_lot scoped-tls pkg-config

$ ./

$ cros deploy $DUT mtdev


You may need to specify which mtdev to deploy

$ cros deploy $DUT sys-libs/mtdev

If croscomp doesn't run smoothly you can get more logs with: $ export WAYLAND_DEBUG=1 RUST_BACKTRACE=1 RUST_LOG=debug

Croscomp may be missing libinput that may require libevdev

$ cros deploy $DUT dev-libs/libevdev
$ cros deploy $DUT libinput

Running chrome under croscomp

Using the CLs from,

build and deploy chrome to the device. You need

target_os = ["chromeos"]
ozone_platform_wayland = "true"
ozone_platform = "wayland"
use_wayland_egl = "false"
use_wayland_gbm = "true"

in the gn args and then

$ ninja -C out_$BOARD/Relase chrome

followed by

$ deploy_chrome --build-dir=out_$BOARD/Release --device=$DUT --nostartui

Make sure both ui and frecon are not running, then start croscomp remotely on the device and use scripts/ to start the chrome login screen on croscomp.