's'

tools/compat.py

@@ -141,6 +141,11 @@ def analyze_for_run(
         )
     if req == "auto" and not skip_check:
         report.notes.append("Resolved --gpu-mode auto -> {}".format(effective))
+    if effective == "host" and not skip_check:
+        report.notes.append(
+            "GPU host mode: if ADB cannot connect (connection refused), Android may not have finished boot "
+            "or init crashed (EGL/driver mismatch); try --gpu-mode guest or docker logs on the container."
+        )
 
     return report, effective, device_args