1 files changed, 12 insertions, 3 deletions
diff --git a/src/xsession.cpp b/src/xsession.cpp
index 8e26b86..d2e8cfe 100644
--- a/src/xsession.cpp
+++ b/src/xsession.cpp
@@ -3,6 +3,7 @@
 #include <QLocale>
 #include <QApplication>
 #include <QProcess>
+#include <QStandardPaths>
 
 #include "xsession.h"
 #include "globals.h"
@@ -111,9 +112,17 @@ bool XSession::isActive() const {
     return true;
 }
 
-bool XSession::isValid() const {
-    QFileInfo fi(this->exec_);
-    return !fi.isAbsolute() || (fi.isFile() && fi.isExecutable());
+QString XSession::checkCanRunInternal() const {
+    QString exe = this->exec_.left(this->exec_.indexOf(' ')); // -1 means entire string
+    QFileInfo fi(exe);
+    if (!fi.isAbsolute()) {
+        if (!QStandardPaths::findExecutable(exe).isEmpty())
+            return QString();
+    }
+    if (fi.isFile() && fi.isExecutable())
+        return QString();
+    // Not found
+    return QObject::trUtf8("Binary %1 not found.").arg(exe);
 }
 
 bool XSession::isLocked() const {