1 files changed, 46 insertions, 0 deletions
diff --git a/x11-misc/sddm/files/sddm-0.18.1-nvidia-glitches-vt-switch.patch b/x11-misc/sddm/files/sddm-0.18.1-nvidia-glitches-vt-switch.patch
new file mode 100644
index 00000000..ab2fc18c
--- /dev/null
+++ b/x11-misc/sddm/files/sddm-0.18.1-nvidia-glitches-vt-switch.patch
@@ -0,0 +1,46 @@
+From 76c11653522453efcf86f6f2f53bca1a497ea350 Mon Sep 17 00:00:00 2001
+From: David Edmundson <kde@davidedmundson.co.uk>
+Date: Thu, 28 Mar 2019 11:43:37 +0000
+Subject: Enable QSurfaceFormat::ResetNotification on new Qt
+
+This fixes graphical glitches on nvidia after VT switching.
+
+It's opt-in as it requires code paths to handle glGetError differently.
+The version comparison is because my early implementations missed a code
+path. This was fixed in 5.12.2, but we may as well play safe
+
+(cherry picked from commit cd4e1fa21e1ab7178fa5d2ef858f3271575fd315)
+---
+ src/greeter/GreeterApp.cpp | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/src/greeter/GreeterApp.cpp b/src/greeter/GreeterApp.cpp
+index d47998e..4e117a7 100644
+--- a/src/greeter/GreeterApp.cpp
++++ b/src/greeter/GreeterApp.cpp
+@@ -40,6 +40,9 @@
+ #include <QDebug>
+ #include <QTimer>
+ #include <QTranslator>
++#include <QLibraryInfo>
++#include <QVersionNumber>
++#include <QSurfaceFormat>
+ 
+ #include <iostream>
+ 
+@@ -309,6 +312,12 @@ int main(int argc, char **argv)
+         qDebug() << "High-DPI autoscaling not Enabled";
+     }
+ 
++    if (QLibraryInfo::version() >= QVersionNumber(5, 13, 0)) {
++        auto format(QSurfaceFormat::defaultFormat());
++        format.setOption(QSurfaceFormat::ResetNotification);
++        QSurfaceFormat::setDefaultFormat(format);
++    }
++
+     QGuiApplication app(argc, argv);
+ 
+     QCommandLineParser parser;
+-- 
+2.38.1
+