diff --git a/.docker/files/chromium/supervisord.conf b/.docker/files/chromium/supervisord.conf
index 459472e1..da86a77b 100644
--- a/.docker/files/chromium/supervisord.conf
+++ b/.docker/files/chromium/supervisord.conf
@@ -2,7 +2,7 @@
 # https://peter.sh/experiments/chromium-command-line-switches/ --no-sandbox 
 [program:chromium]
 environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
-command=/usr/lib/chromium/chromium --window-position=0,0 --window-size=%(ENV_SCREEN_WIDTH)s,%(ENV_SCREEN_HEIGHT)s --display=%(ENV_DISPLAY)s --start-maximized --bwsi --test-type --force-dark-mode --disable-file-system --disable-gpu --disable-software-rasterizer --disable-dev-shm-usage
+command=/usr/lib/chromium/chromium --window-position=0,0 --display=%(ENV_DISPLAY)s --start-maximized --bwsi --test-type --force-dark-mode --disable-file-system --disable-gpu --disable-software-rasterizer --disable-dev-shm-usage
 autorestart=true
 priority=800
 user=%(ENV_USER)s
diff --git a/.docker/files/firefox/supervisord.conf b/.docker/files/firefox/supervisord.conf
index db3ce1a4..312ef888 100644
--- a/.docker/files/firefox/supervisord.conf
+++ b/.docker/files/firefox/supervisord.conf
@@ -1,7 +1,7 @@
 
 [program:firefox-esr]
 environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
-command=/usr/lib/firefox-esr/firefox-esr --display=%(ENV_DISPLAY)s --setDefaultBrowser -width %(ENV_SCREEN_WIDTH)s -height %(ENV_SCREEN_HEIGHT)s
+command=/usr/lib/firefox-esr/firefox-esr --display=%(ENV_DISPLAY)s -setDefaultBrowser -width 1280 -height 720
 autorestart=true
 priority=800
 user=%(ENV_USER)s
diff --git a/.docker/files/supervisord.conf b/.docker/files/supervisord.conf
index afdf7878..b132c556 100644
--- a/.docker/files/supervisord.conf
+++ b/.docker/files/supervisord.conf
@@ -18,23 +18,17 @@ stdout_logfile=/var/log/neko/dbus.log
 stdout_logfile_maxbytes=100MB
 stdout_logfile_backups=10
 redirect_stderr=true
-stderr_logfile=/var/log/neko/dbus.err.log
-stderr_logfile_maxbytes=100MB
-stderr_logfile_backups=10
 
-[program:xvfb]
+[program:x-server]
 environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s"
-command=/usr/bin/Xvfb %(ENV_DISPLAY)s -screen 0 %(ENV_SCREEN_WIDTH)sx%(ENV_SCREEN_HEIGHT)sx%(ENV_SCREEN_DEPTH)s
+command=/usr/bin/X -config /etc/neko/xorg.conf %(ENV_DISPLAY)s
 autorestart=true
 priority=300
 user=%(ENV_USER)s
-stdout_logfile=/var/log/neko/xvfb.log
+stdout_logfile=/var/log/neko/xorg.log
 stdout_logfile_maxbytes=100MB
 stdout_logfile_backups=10
 redirect_stderr=true
-stderr_logfile=/var/log/neko/xvfb.err.log
-stderr_logfile_maxbytes=100MB
-stderr_logfile_backups=10
 
 [program:pulseaudio]
 environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
@@ -46,9 +40,6 @@ stdout_logfile=/var/log/neko/pulseaudio.log
 stdout_logfile_maxbytes=100MB
 stdout_logfile_backups=10
 redirect_stderr=true
-stderr_logfile=/var/log/neko/pulseaudio.err.log
-stderr_logfile_maxbytes=100MB
-stderr_logfile_backups=10
 
 [program:openbox]
 environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
@@ -60,6 +51,3 @@ stdout_logfile=/var/log/neko/openbox.log
 stdout_logfile_maxbytes=100MB
 stdout_logfile_backups=10
 redirect_stderr=true
-stderr_logfile=/var/log/neko/openbox.err.log
-stderr_logfile_maxbytes=100MB
-stderr_logfile_backups=10
diff --git a/.docker/files/xorg.conf b/.docker/files/xorg.conf
new file mode 100644
index 00000000..89cee560
--- /dev/null
+++ b/.docker/files/xorg.conf
@@ -0,0 +1,66 @@
+# This xorg configuration file is meant to be used by xpra
+# to start a dummy X11 server.
+# For details, please see:
+# https://xpra.org/Xdummy.html
+
+Section "ServerFlags"
+  Option "DontVTSwitch" "true"
+  Option "AllowMouseOpenFail" "true"
+  Option "PciForceNone" "true"
+  Option "AutoEnableDevices" "false"
+  Option "AutoAddDevices" "false"
+EndSection
+
+Section "InputDevice"
+  Identifier "dummy_mouse"
+  Option "CorePointer" "true"
+  Driver "void"
+EndSection
+
+Section "InputDevice"
+  Identifier "dummy_keyboard"
+  Option "CoreKeyboard" "true"
+  Driver "void"
+EndSection
+
+Section "Device"
+  Identifier "dummy_videocard"
+  Driver "dummy"
+  Option "ConstantDPI" "true"
+  #VideoRam 4096000
+  #VideoRam 256000
+  VideoRam 192000
+EndSection
+
+Section "Monitor"
+  Identifier "dummy_monitor"
+  HorizSync   5.0 - 1000.0
+  VertRefresh 5.0 - 200.0
+  #This can be used to get a specific DPI, but only for the default resolution:
+  #DisplaySize 508 317
+  #NOTE: the highest modes will not work without increasing the VideoRam
+  # for the dummy video card.
+  # https://arachnoid.com/modelines/
+  # 1280x720 @ 30.00 Hz (GTF) hsync: 21.99 kHz; pclk: 33.78 MHz
+  Modeline "1280x720_30.00" 33.78 1280 1288 1408 1536 720 721 724 733 -HSync +Vsync
+EndSection
+
+Section "Screen"
+  Identifier "dummy_screen"
+  Device "dummy_videocard"
+  Monitor "dummy_monitor"
+  DefaultDepth 24
+  SubSection "Display"
+    Viewport 0 0
+    Depth 24
+    Modes "1280x720_30.00"
+    Virtual 1280 720
+  EndSubSection
+EndSection
+
+Section "ServerLayout"
+  Identifier   "dummy_layout"
+  Screen       "dummy_screen"
+  InputDevice  "dummy_mouse"
+  InputDevice  "dummy_keyboard"
+EndSection
\ No newline at end of file
diff --git a/.docker/test b/.docker/test
index 8bdd4ced..6c331811 100755
--- a/.docker/test
+++ b/.docker/test
@@ -38,6 +38,7 @@ mkdir -p /etc/neko/supervisord
 cp files/dbus /usr/bin/dbus
 cp files/default.pa /etc/pulse/default.pa
 cp files/supervisord.conf /etc/neko/supervisord.conf
+cp files/xorg.conf /etc/neko/xorg.conf
 cp files/openbox.xml /etc/neko/openbox.xml
 
 chmod +x /usr/bin/dbus
diff --git a/Dockerfile b/Dockerfile
index bdac0adb..5ab2c9dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,7 +28,7 @@ RUN set -eux; apt-get update; \
 #
 # install neko dependencies
 RUN set -eux; apt-get update; \
-    apt-get install -y --no-install-recommends wget ca-certificates pulseaudio openbox dbus-x11 xvfb supervisor; \
+    apt-get install -y --no-install-recommends wget ca-certificates pulseaudio openbox dbus-x11 xserver-xorg-video-dummy supervisor; \
     apt-get install -y --no-install-recommends libxv1 libopus0 libvpx4; \
     #
     # create a non-root user
@@ -66,9 +66,6 @@ COPY .build/gst/local /gst/local/
 #
 # env
 ENV USER=$USERNAME
-ENV SCREEN_WIDTH=1280
-ENV SCREEN_HEIGHT=720
-ENV SCREEN_DEPTH=24
 ENV DISPLAY=:99.0
 
 #
@@ -77,6 +74,7 @@ COPY .docker/files/dbus /usr/bin/dbus
 COPY .docker/files/openbox.xml /etc/neko/openbox.xml
 COPY .docker/files/neko/supervisord.conf /etc/neko/supervisord/neko.conf
 COPY .docker/files/supervisord.conf /etc/neko/supervisord.conf
+COPY .docker/files/xorg.conf /etc/neko/xorg.conf
 COPY .docker/files/default.pa /etc/pulse/default.pa
 
 #