diff --git a/.github/workflows/build_macos.yml b/.github/workflows/build_macos.yml
index adf9fe2..ccdb816 100644
--- a/.github/workflows/build_macos.yml
+++ b/.github/workflows/build_macos.yml
@@ -23,6 +23,9 @@ jobs:
       with:
         python-version: "3.8"
 
+    - name: Setup OpenGL
+      run: brew install mesa-glu libxrender libxi libxkbcommon
+
     - name: Download ANTs
       uses: robinraju/release-downloader@main
       with:
@@ -53,12 +56,18 @@ jobs:
         mkdir tmp_dependencies
         pyinstaller --log-level INFO --noconfirm --clean assets/main.spec
 
-#    - name: Test executable
-#      run: QT_QPA_PLATFORM="offscreen" ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
-#      shell: bash
-#
-#    - name: Test GUI startup
-#      run: cd ${{github.workspace}}/tests && python software_launch_test.py
+    - name: Test executable
+      env:
+        DISPLAY: ':1'
+      run: QT_QPA_PLATFORM="offscreen" ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
+      shell: bash
+
+    - name: Test GUI startup
+      env:
+        DISPLAY: ':1'
+      run: |
+          export QT_QPA_PLATFORM="offscreen"
+          cd ${{github.workspace}}/tests && python software_launch_test.py
 
     - name: Make installer
       run: |
diff --git a/.github/workflows/build_macos_arm.yml b/.github/workflows/build_macos_arm.yml
index dc43d3a..d804a52 100644
--- a/.github/workflows/build_macos_arm.yml
+++ b/.github/workflows/build_macos_arm.yml
@@ -34,27 +34,6 @@ jobs:
         pip install urllib3==1.26.6
         deactivate
 
-#    - name: Install cmake
-#      run: |
-#        brew update
-#        brew install cmake ninja
-#        ninja --version
-#        cmake --version
-#
-#    - name: Build ANTs
-#      run: |
-#        cd ${{github.workspace}}
-#        mkdir ANTs
-#        cd ANTs
-#        git clone https://github.com/ANTsX/ANTs.git source
-#        mkdir build
-#        cd build
-#        cmake -DCMAKE_INSTALL_PREFIX=${{github.workspace}}/ANTs/install ../source
-#        make -j4
-#        cd ANTS-build
-#        make install
-#        cp -R ${{github.workspace}}/ANTs/source/Scripts ${{github.workspace}}/ANTs/install/
-
     - name: Download ANTs
       uses: robinraju/release-downloader@main
       with:
@@ -79,17 +58,17 @@ jobs:
         pyinstaller --log-level INFO --noconfirm --clean assets/main_arm.spec
 
     - name: Test executable
-      run: QT_QPA_PLATFORM="offscreen" ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
+      run: ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
       shell: bash
 
     - name: Test GUI startup
-      run: cd ${{github.workspace}}/tests && python software_launch_test.py
+      run: cd ${{github.workspace}}/tests && python3 software_launch_test.py
 
     - name: Make installer
       run: |
         git clone https://github.com/dbouget/quickpkg.git
-        quickpkg/quickpkg dist/Raidionics.app --output Raidionics-1.2.1-macOS.pkg
-        cp -r Raidionics-1.2.1-macOS.pkg dist/Raidionics-1.2.1-macOS-arm64.pkg
+        quickpkg/quickpkg dist/Raidionics.app --output Raidionics-1.2.2-macOS.pkg
+        cp -r Raidionics-1.2.2-macOS.pkg dist/Raidionics-1.2.2-macOS-arm64.pkg
 
     - name: Upload package
       uses: actions/upload-artifact@v3
diff --git a/.github/workflows/build_ubuntu.yml b/.github/workflows/build_ubuntu.yml
index f6e8a07..efdc1ca 100644
--- a/.github/workflows/build_ubuntu.yml
+++ b/.github/workflows/build_ubuntu.yml
@@ -20,6 +20,19 @@ jobs:
       with:
         python-version: "3.8"
 
+    - name: Free Up GitHub Actions Ubuntu Runner Disk Space
+      uses: dbouget/free-disk-space@main
+      with:
+        # This might remove tools that are actually needed, if set to "true" but frees about 6 GB
+        tool-cache: false
+
+        # All of these default to true, but feel free to set to "false" if necessary for your workflow
+        android: true
+        dotnet: true
+        haskell: true
+        large-packages: true
+        swap-storage: true
+
     - name: Install CL dependencies
       run: |
           apt update && apt install -y sudo
@@ -32,23 +45,13 @@ jobs:
           sudo apt-get install -y pocl-opencl-icd
 
     - name: Setup OpenGL
-      run: sudo apt-get install -y libopengl0
+      run: sudo apt install -y '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev libxkbcommon-x11-dev
 
     - name: Debug clinfo
       run: clinfo
 
-    - name: Free Up GitHub Actions Ubuntu Runner Disk Space
-      uses: dbouget/free-disk-space@main
-      with:
-        # This might remove tools that are actually needed, if set to "true" but frees about 6 GB
-        tool-cache: false
-
-        # All of these default to true, but feel free to set to "false" if necessary for your workflow
-        android: true
-        dotnet: true
-        haskell: true
-        large-packages: true
-        swap-storage: true
+    - name: Setup X virtual framebuffer
+      run: sudo apt-get install -y xvfb
 
     - name: Download ANTs
       uses: robinraju/release-downloader@main
@@ -80,12 +83,24 @@ jobs:
         mkdir tmp_dependencies
         pyinstaller --log-level INFO --noconfirm --clean assets/main.spec
 
-#    - name: Test executable
-#      run: QT_QPA_PLATFORM="offscreen" ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
-#      shell: bash
-#
-#    - name: Test GUI startup
-#      run: cd ${{github.workspace}}/tests && python software_launch_test.py
+    - name: Test executable xvfb
+      env:
+        DISPLAY: ':1'
+      run: xvfb-run ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
+      shell: bash
+
+    - name: Test executable
+      env:
+        DISPLAY: ':1'
+      run: QT_QPA_PLATFORM="offscreen" ./dist/Raidionics/Raidionics & sleep 5; kill -INT %+
+      shell: bash
+
+    - name: Test GUI startup
+      env:
+        DISPLAY: ':1'
+      run: |
+          export QT_QPA_PLATFORM="offscreen"
+          cd ${{github.workspace}}/tests && python software_launch_test.py
 
     - name: Make installer
       run: |
diff --git a/tests/software_launch_test.py b/tests/software_launch_test.py
index 35d0a01..224f66f 100644
--- a/tests/software_launch_test.py
+++ b/tests/software_launch_test.py
@@ -33,8 +33,9 @@ def software_launch_test():
             proc.send_signal(signal.CTRL_BREAK_EVENT)
             proc.kill()
         else:
-            proc = subprocess.Popen([os.path.join(build_executable_path, 'Raidionics')], stdout=subprocess.PIPE,
-                                    stderr=subprocess.PIPE, preexec_fn=os.setsid)
+            os.environ['QT_QPA_PLATFORM'] = "offscreen"
+            proc = subprocess.Popen([os.path.join(build_executable_path, 'Raidionics')],
+                                    stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=os.setsid)
             time.sleep(10)
             stdout = proc.stdout
             stderr = proc.stderr