1 files changed, 18 insertions, 4 deletions
diff --git a/src/platformsupport/kmsconvenience/qkmsdevice.cpp b/src/platformsupport/kmsconvenience/qkmsdevice.cpp
index 4b27522976..8cc7a539b5 100644
--- a/src/platformsupport/kmsconvenience/qkmsdevice.cpp
+++ b/src/platformsupport/kmsconvenience/qkmsdevice.cpp
@@ -59,6 +59,7 @@ enum OutputConfiguration {
     OutputConfigOff,
     OutputConfigPreferred,
     OutputConfigCurrent,
+    OutputConfigSkip,
     OutputConfigMode,
     OutputConfigModeline
 };
@@ -191,6 +192,8 @@ QPlatformScreen *QKmsDevice::createScreenForConnector(drmModeResPtr resources,
         configuration = OutputConfigPreferred;
     } else if (mode == "current") {
         configuration = OutputConfigCurrent;
+    } else if (mode == "skip") {
+        configuration = OutputConfigSkip;
     } else if (sscanf(mode.constData(), "%dx%d@%d", &configurationSize.rwidth(), &configurationSize.rheight(),
                       &configurationRefresh) == 3)
     {
@@ -229,6 +232,11 @@ QPlatformScreen *QKmsDevice::createScreenForConnector(drmModeResPtr resources,
         return nullptr;
     }
 
+    if (configuration == OutputConfigSkip) {
+        qCDebug(qLcKmsDebug) << "Skipping output" << connectorName;
+        return nullptr;
+    }
+
     // Get the current mode on the current crtc
     drmModeModeInfo crtc_mode;
     memset(&crtc_mode, 0, sizeof crtc_mode);
@@ -573,10 +581,16 @@ void QKmsDevice::createScreens()
 
 #if QT_CONFIG(drm_atomic)
     // check atomic support
-    m_has_atomic_support = !drmSetClientCap(m_dri_fd, DRM_CLIENT_CAP_ATOMIC, 1)
-                           && qEnvironmentVariableIntValue("QT_QPA_EGLFS_KMS_ATOMIC");
-    if (m_has_atomic_support)
-        qCDebug(qLcKmsDebug) << "Atomic Support found";
+    m_has_atomic_support = !drmSetClientCap(m_dri_fd, DRM_CLIENT_CAP_ATOMIC, 1);
+    if (m_has_atomic_support) {
+        qCDebug(qLcKmsDebug, "Atomic reported as supported");
+        if (qEnvironmentVariableIntValue("QT_QPA_EGLFS_KMS_ATOMIC")) {
+            qCDebug(qLcKmsDebug, "Atomic enabled");
+        } else {
+            qCDebug(qLcKmsDebug, "Atomic disabled");
+            m_has_atomic_support = false;
+        }
+    }
 #endif
 
     drmModeResPtr resources = drmModeGetResources(m_dri_fd);