From 7fa1c779f14bb9150ea7564e5ec55f7b1e7572c3 Mon Sep 17 00:00:00 2001
From: deepin-wm <treeland@uniontech.com>
Date: Thu, 18 Jun 2026 20:02:08 +0800
Subject: [PATCH] fix: fix wallpaper-only display after lid reopen
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1. Restore current mode and scale in onSetOutputPowerMode
   MODE_ON branch, and call schedule_frame after commit
2. Iterate outputs to call scheduleFrame and trigger
   m_renderWindow->update() in onPrepareForSleep(false)
3. Connect WOutput::enabledChanged in LockScreen::addOutput
   to reconfigure lock surface and update DDM lockscreen
   component size when output re-enables

Log: Fixed the issue where only wallpaper is displayed after reopening the laptop lid

Influence:
1. Test laptop lid close and reopen, verify full desktop restores
2. Test with lock screen enabled, verify lock screen renders correctly after reopen
3. Test DPMS off/on cycle, verify output mode and scale are restored
4. Test suspend/resume cycle, verify rendering pipeline fully recovers

fix: 修复合盖后重开只显示壁纸的问题

1. 在 onSetOutputPowerMode 的 MODE_ON 分支恢复 current mode 和
   scale，commit 成功后调用 schedule_frame
2. 在 onPrepareForSleep(false) 中遍历 outputs 调用
   scheduleFrame，并触发 m_renderWindow->update()
3. 在 LockScreen::addOutput 中连接 WOutput::enabledChanged
   信号，当 output 重新启用时重新配置 lock surface 和
   更新 DDM 锁屏组件尺寸

Log: 修复合盖后重开只显示壁纸的问题

Influence:
1. 测试笔记本合盖后重开，验证完整桌面恢复
2. 测试锁屏状态下合盖重开，验证锁屏正确渲染
3. 测试 DPMS 关闭/开启循环，验证输出模式和缩放恢复
4. 测试休眠/唤醒循环，验证渲染管线完整恢复
---
 src/core/lockscreen.cpp | 21 +++++++++++++++++++++
 src/seat/helper.cpp     | 20 ++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/src/core/lockscreen.cpp b/src/core/lockscreen.cpp
index 9fb6cde54..9390678d5 100644
--- a/src/core/lockscreen.cpp
+++ b/src/core/lockscreen.cpp
@@ -9,6 +9,7 @@
 #include "utils/cmdline.h"
 #include "common/treelandlogging.h"
 #include "greeter/greeterproxy.h"
+#include <woutputrenderwindow.h>
 
 #ifdef EXT_SESSION_LOCK_V1
 #include <wsessionlock.h>
@@ -96,6 +97,26 @@ void LockScreen::addOutput(Output *output)
     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;
     }
diff --git a/src/seat/helper.cpp b/src/seat/helper.cpp
index 369aed990..121c53d1f 100644
--- a/src/seat/helper.cpp
+++ b/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();
     }
 }