fix: fix wallpaper-only display after lid reopen

src/core/lockscreen.cpp

@@ -6,12 +6,13 @@
 #include "interfaces/lockscreeninterface.h"
 #include "output/output.h"
 #include "seat/helper.h"
 #include "utils/cmdline.h"
 #include "common/treelandlogging.h"
 #include "greeter/greeterproxy.h"
+#include <woutputrenderwindow.h>
 
 #ifdef EXT_SESSION_LOCK_V1
 #include <wsessionlock.h>
 #include <wsessionlocksurface.h>
 
 #include "rootsurfacecontainer.h"
@@ -96,6 +97,26 @@
     Q_ASSERT(ok);
 #endif
 
+    connect(output->output(), &WOutput::enabledChanged, this, [this, output]() {
+        if (!output->output()->isEnabled() || !isLocked()) {
+            return;
+        }
+#if EXT_SESSION_LOCK_V1
+        auto outputItem = output->outputItem();
+        if (outputItem) {
+            auto *lockSurface = m_lockSurfaces[outputItem].get();
+            if (lockSurface) {
+                lockSurface->configureSize(outputItem->size().toSize());
+            }
+        }
+#endif
+        auto it = m_components.find(output);
+        if (it != m_components.end() && it->second) {
+            it->second->setSize(output->outputItem()->size());
+        }
+        Helper::instance()->window()->update();
+    });
+
     if (!m_impl) {
         return;
     }

src/seat/helper.cpp

@@ -936,9 +936,23 @@ void Helper::onSetOutputPowerMode(wlr_output_power_v1_set_mode_event *event)
         if (output->handle()->enabled) {
             return;
         }
+        if (!output->handle()->current_mode) {
+            auto mode = output->preferred_mode();
+            if (mode) {
+                newState.set_mode(mode);
+            }
+        }
+        auto outputObj = getOutput(WOutput::fromHandle(output));
+        if (outputObj) {
+            newState.set_scale(outputObj->preferredScaleFactor(output->handle()->width > 0
+                                                                ? QSize(output->handle()->width, output->handle()->height)
+                                                                : QSize()));
+        }
         newState.set_enabled(true);
         if (!output->commit_state(newState)) {
             qCCritical(lcTlCore, "commit failed on output %s", output->handle()->name);
+        } else {
+            output->schedule_frame();
         }
         break;
     }
@@ -2773,6 +2787,12 @@ void Helper::onPrepareForSleep(bool sleep)
     } else {
         qCInfo(lcTlCore) << "Re-enabled rendering after hibernate";
         enableRender();
+        for (auto o : std::as_const(m_outputList)) {
+            if (o && o->output() && o->output()->isEnabled()) {
+                o->output()->scheduleFrame();
+            }
+        }
+        m_renderWindow->update();
     }
 }