diff --git a/.github/workflows/test-live.yml b/.github/workflows/test-live.yml
index 51a6f2e..23cfe49 100644
--- a/.github/workflows/test-live.yml
+++ b/.github/workflows/test-live.yml
@@ -55,4 +55,11 @@ jobs:
         run: vp exec playwright install --with-deps chromium firefox webkit
       - name: Safe live browser smoke
         if: ${{ inputs.browser }}
-        run: vp run test:browser
+        # A virtual display on Linux, for repositories that run a browser headed.
+        shell: bash
+        run: |
+          if [[ "$RUNNER_OS" == Linux ]]; then
+            xvfb-run -a vp run test:browser
+          else
+            vp run test:browser
+          fi
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 99c415d..81900d2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -156,7 +156,14 @@ jobs:
           BASE_URL: ${{ steps.preview.outputs.base-url }}
           QA_DEPLOY_URLS: ${{ steps.preview.outputs.deploy-urls }}
           TESTING_SECRET: ${{ secrets.testing-secret }}
-        run: vp run test:browser
+        # A virtual display on Linux, for repositories that run a browser headed.
+        shell: bash
+        run: |
+          if [[ "$RUNNER_OS" == Linux ]]; then
+            xvfb-run -a vp run test:browser
+          else
+            vp run test:browser
+          fi
       - name: Upload browser failure output
         if: ${{ failure() && steps.browser.outcome == 'failure' && inputs.browser-artifacts != '' }}
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1