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-rw-r--r--src/plugins/platforms/xcb/qxcbscreen.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp
index 0f25d10aac..b5eed4f4fe 100644
--- a/src/plugins/platforms/xcb/qxcbscreen.cpp
+++ b/src/plugins/platforms/xcb/qxcbscreen.cpp
@@ -417,6 +417,13 @@ void QXcbScreen::handleScreenChange(xcb_randr_screen_change_notify_event_t *chan
QDpi ldpi = logicalDpi();
QWindowSystemInterface::handleScreenLogicalDotsPerInchChange(QPlatformScreen::screen(), ldpi.first, ldpi.second);
+
+ // Windows which had null screens have already had expose events by now.
+ // They need to be told the screen is back, it's OK to render.
+ foreach (QWindow *window, QGuiApplication::topLevelWindows()) {
+ QXcbWindow *xcbWin = static_cast<QXcbWindow*>(window->handle());
+ xcbWin->maybeSetScreen(this);
+ }
}
void QXcbScreen::updateGeometry(xcb_timestamp_t timestamp)