File Fix-missing-Switch-User-with-systemd-246.patch of Package plasma5-workspace

From f1393bc835ee28ceee54cdceb8d873622e36826a Mon Sep 17 00:00:00 2001
From: Wolfgang Bauer <wbauer@tmo.at>
Date: Mon, 9 Nov 2020 09:42:45 +0000
Subject: [PATCH] Fix missing "Switch User" button on lockscreen with systemd
 246

With newer systemd versions (since 246), getting the "CanMultiSession" property
doesn't work anymore.

It's hidden and always true, see https://github.com/systemd/systemd/commit/8f8cc84ba4612e74cd1e26898c6816e6e60fc4e9
and https://github.com/systemd/systemd/commit/c2b178d3cacad52eadc30ecc349160bc02d32a9c

So let's just assume that it's supported if the property is invalid.

BUG: 427777
FIXED-IN: 5.20.3
---
 libkworkspace/kdisplaymanager.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libkworkspace/kdisplaymanager.cpp b/libkworkspace/kdisplaymanager.cpp
index 7329978a3..a7cf5442d 100644
--- a/libkworkspace/kdisplaymanager.cpp
+++ b/libkworkspace/kdisplaymanager.cpp
@@ -622,6 +622,14 @@ KDisplayManager::isSwitchable()
                 QVariant prop = SDseat.property("CanMultiSession");
                 if (prop.isValid())
                     return prop.toBool();
+                else {
+                    // Newer systemd versions (since 246) don't expose "CanMultiSession" anymore.
+                    // It's hidden and always true.
+                    // See https://github.com/systemd/systemd/commit/8f8cc84ba4612e74cd1e26898c6816e6e60fc4e9
+                    // and https://github.com/systemd/systemd/commit/c2b178d3cacad52eadc30ecc349160bc02d32a9c
+                    // So assume that it's supported if the property is invalid.
+                    return true;
+                }
             }
             CKSeat CKseat(currentSeat);
             if (CKseat.isValid()) {
-- 
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