diff --git a/local/recipes/gpu/redox-drm/source/src/kms/atomic.rs b/local/recipes/gpu/redox-drm/source/src/kms/atomic.rs
index 4ac0376d87..3d9bffbd39 100644
--- a/local/recipes/gpu/redox-drm/source/src/kms/atomic.rs
+++ b/local/recipes/gpu/redox-drm/source/src/kms/atomic.rs
@@ -1,6 +1,6 @@
 
 
-use super::{ConnectorInfo, ModeInfo};
+use super::{ConnectorInfo, ConnectorStatus, ModeInfo};
 
 /// Maximum pixel clock in kHz that the display engine supports.
 const MAX_PIXEL_CLOCK_KHZ: u32 = 600_000;
@@ -125,7 +125,7 @@ pub enum AtomicCheckResult {
 /// Validate the atomic state against hardware constraints.
 pub fn atomic_check(
     state: &AtomicState,
-    _available_connectors: &[ConnectorInfo],
+    available_connectors: &[ConnectorInfo],
 ) -> AtomicCheckResult {
     for crtc in &state.crtc_states {
         if !crtc.active {
@@ -175,6 +175,22 @@ pub fn atomic_check(
                 reason: "active CRTC has no framebuffer assigned".into(),
             };
         }
+
+        for conn_id in &crtc.connectors {
+            match available_connectors.iter().find(|c| c.id == *conn_id) {
+                None => {
+                    return AtomicCheckResult::CrtcNotFound {
+                        crtc_id: *conn_id,
+                    };
+                }
+                Some(conn) if conn.connection != ConnectorStatus::Connected => {
+                    return AtomicCheckResult::ConnectorDisconnected {
+                        connector_id: *conn_id,
+                    };
+                }
+                Some(_) => {}
+            }
+        }
     }
 
     AtomicCheckResult::Ok