diff -up qtbase-opensource-src-5.7.1/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp.0295 qtbase-opensource-src-5.7.1/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp
--- qtbase-opensource-src-5.7.1/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp.0295	2017-02-09 07:41:56.976681266 -0600
+++ qtbase-opensource-src-5.7.1/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp	2017-02-09 07:43:31.812667108 -0600
@@ -222,7 +222,7 @@ QDpi QEGLDeviceIntegration::logicalDpi()
 
 qreal QEGLDeviceIntegration::pixelDensity() const
 {
-    return qRound(logicalDpi().first / qreal(100));
+    return qMax(1, qRound(logicalDpi().first / qreal(100)));
 }
 
 Qt::ScreenOrientation QEGLDeviceIntegration::nativeOrientation() const
diff -up qtbase-opensource-src-5.7.1/src/plugins/platforms/windows/qwindowsscreen.cpp.0295 qtbase-opensource-src-5.7.1/src/plugins/platforms/windows/qwindowsscreen.cpp
--- qtbase-opensource-src-5.7.1/src/plugins/platforms/windows/qwindowsscreen.cpp.0295	2016-12-01 02:17:04.000000000 -0600
+++ qtbase-opensource-src-5.7.1/src/plugins/platforms/windows/qwindowsscreen.cpp	2017-02-09 07:41:56.976681266 -0600
@@ -264,7 +264,7 @@ qreal QWindowsScreen::pixelDensity() con
     // the pixel density since it is reflects the Windows UI scaling.
     // High DPI auto scaling should be disabled when the user chooses
     // small fonts on a High DPI monitor, resulting in lower logical DPI.
-    return qRound(logicalDpi().first / 96);
+    return qMax(1, qRound(logicalDpi().first / 96));
 }
 
 /*!
diff -up qtbase-opensource-src-5.7.1/src/plugins/platforms/winrt/qwinrtscreen.cpp.0295 qtbase-opensource-src-5.7.1/src/plugins/platforms/winrt/qwinrtscreen.cpp
--- qtbase-opensource-src-5.7.1/src/plugins/platforms/winrt/qwinrtscreen.cpp.0295	2016-12-01 02:17:04.000000000 -0600
+++ qtbase-opensource-src-5.7.1/src/plugins/platforms/winrt/qwinrtscreen.cpp	2017-02-09 07:41:56.976681266 -0600
@@ -644,7 +644,7 @@ QDpi QWinRTScreen::logicalDpi() const
 qreal QWinRTScreen::pixelDensity() const
 {
     Q_D(const QWinRTScreen);
-    return qRound(d->logicalDpi / 96);
+    return qMax(1, qRound(d->logicalDpi / 96));
 }
 
 qreal QWinRTScreen::scaleFactor() const
diff -up qtbase-opensource-src-5.7.1/src/plugins/platforms/xcb/qxcbscreen.cpp.0295 qtbase-opensource-src-5.7.1/src/plugins/platforms/xcb/qxcbscreen.cpp
--- qtbase-opensource-src-5.7.1/src/plugins/platforms/xcb/qxcbscreen.cpp.0295	2016-12-01 02:17:04.000000000 -0600
+++ qtbase-opensource-src-5.7.1/src/plugins/platforms/xcb/qxcbscreen.cpp	2017-02-09 07:41:56.977681276 -0600
@@ -633,7 +633,7 @@ void QXcbScreen::updateGeometry(const QR
         m_sizeMillimeters = sizeInMillimeters(xGeometry.size(), virtualDpi());
 
     qreal dpi = xGeometry.width() / physicalSize().width() * qreal(25.4);
-    m_pixelDensity = qRound(dpi/96);
+    m_pixelDensity = qMax(1, qRound(dpi/96));
     m_geometry = QRect(xGeometry.topLeft(), xGeometry.size());
     m_availableGeometry = xGeometry & m_virtualDesktop->workArea();
     QWindowSystemInterface::handleScreenGeometryChange(QPlatformScreen::screen(), m_geometry, m_availableGeometry);