diff -ur libkworkspace_orig/sessionmanagementbackend.cpp libkworkspace/sessionmanagementbackend.cpp
--- libkworkspace_orig/sessionmanagementbackend.cpp	2021-08-31 13:52:18.000000000 +0200
+++ libkworkspace/sessionmanagementbackend.cpp	2021-10-29 17:13:36.539658992 +0200
@@ -160,7 +160,7 @@
 
 void LogindSessionBackend::suspend()
 {
-    m_login1->Suspend(true);
+    m_login1->Suspend(true).waitForFinished();
 }
 
 void LogindSessionBackend::hybridSuspend()