<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Bluetooth on Zedo.dev</title><link>https://wp.zedo.dev/tags/bluetooth/</link><description>Recent content in Bluetooth on Zedo.dev</description><generator>Hugo -- gohugo.io</generator><language>zh-TW</language><copyright>Zedo.dev | Made with 💖</copyright><lastBuildDate>Tue, 13 Oct 2026 09:37:24 +0800</lastBuildDate><atom:link href="https://wp.zedo.dev/tags/bluetooth/index.xml" rel="self" type="application/rss+xml"/><item><title>Windows 11 26H2 睡眠後藍牙鍵盤無法自動重連</title><link>https://wp.zedo.dev/p/windows-11-26h2-bluetooth-reconnect-after-sleep/</link><pubDate>Tue, 13 Oct 2026 07:20:00 +0800</pubDate><guid>https://wp.zedo.dev/p/windows-11-26h2-bluetooth-reconnect-after-sleep/</guid><description>&lt;img src="https://wp.zedo.dev/p/windows-11-26h2-bluetooth-reconnect-after-sleep/windows-11-26h2-bluetooth-reconnect-after-sleep.png" alt="Featured image of post Windows 11 26H2 睡眠後藍牙鍵盤無法自動重連" />&lt;p>Windows 11 26H2 睡眠之後，藍牙鍵盤有時不會自己連回來。畫面已經醒了，鍵盤卻要重新配對，或先關掉藍牙再開一次才會動。滑鼠若走同一顆接收器，也可能一起斷掉。&lt;/p>
&lt;p>原因通常不是鍵盤壞了。Windows 在睡眠時會把 USB 藍牙接收器掛起省電，醒來後這條連線沒有被拉回來。把接收器的節電關掉，並停用目前電源配置的 USB 選擇性暫停，重開機後再睡一次，鍵盤就能自動重連。&lt;/p>
&lt;p>做法不綁廠牌，也不綁某一支鍵盤。Intel、Realtek 或其他 USB 藍牙接收器都用同一組步驟：先找出正在使用的接收器，再只改那顆接收器。&lt;/p>
&lt;h2 id="什麼情況適用">什麼情況適用
&lt;/h2>&lt;p>適用：Windows 11 26H2，周邊是藍牙鍵盤或藍牙滑鼠，睡眠醒來後裝置還在，但不會自動重連。&lt;/p>
&lt;p>不適用：裝置在裝置管理員裡消失、驅動報錯，或從來沒有配對成功。那種要先處理驅動或重新配對，不是這篇的節電設定。&lt;/p>
&lt;h2 id="處理順序">處理順序
&lt;/h2>&lt;ol>
&lt;li>用系統管理員 PowerShell 找出狀態為 OK、執行個體路徑以 &lt;code>USB\&lt;/code> 開頭的藍牙接收器。&lt;/li>
&lt;li>把該接收器的 &lt;code>PnPCapabilities&lt;/code> 設為 &lt;code>24&lt;/code>。這會取消「允許電腦關閉這個裝置以節省電源」。&lt;/li>
&lt;li>把接收器的選擇性暫停與加強電源管理設為 0。&lt;/li>
&lt;li>把目前電源配置的 USB 選擇性暫停，AC 與 DC 都設為停用。&lt;/li>
&lt;li>重開機，進入睡眠再醒來，確認鍵盤會自己連上。&lt;/li>
&lt;/ol>
&lt;h2 id="找出-usb-藍牙接收器">找出 USB 藍牙接收器
&lt;/h2>&lt;p>以系統管理員開啟 PowerShell。正在使用的接收器，&lt;code>Status&lt;/code> 是 &lt;code>OK&lt;/code>，&lt;code>InstanceId&lt;/code> 以 &lt;code>USB\&lt;/code> 開頭。&lt;/p>
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&lt;table class="lntable">&lt;tr>&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code>&lt;span class="lnt">1
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&lt;pre tabindex="0" class="chroma">&lt;code class="language-powershell" data-lang="powershell">&lt;span class="line">&lt;span class="cl">&lt;span class="nv">$radio&lt;/span> &lt;span class="p">=&lt;/span> &lt;span class="nb">Get-PnpDevice&lt;/span> &lt;span class="n">-Class&lt;/span> &lt;span class="n">Bluetooth&lt;/span> &lt;span class="p">|&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">Where-Object&lt;/span> &lt;span class="p">{&lt;/span> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">Status&lt;/span> &lt;span class="o">-eq&lt;/span> &lt;span class="s1">&amp;#39;OK&amp;#39;&lt;/span> &lt;span class="o">-and&lt;/span> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">InstanceId&lt;/span> &lt;span class="o">-like&lt;/span> &lt;span class="s1">&amp;#39;USB\*&amp;#39;&lt;/span> &lt;span class="p">}&lt;/span> &lt;span class="p">|&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">Select-Object&lt;/span> &lt;span class="n">-First&lt;/span> &lt;span class="mf">1&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nv">$radio&lt;/span> &lt;span class="p">|&lt;/span> &lt;span class="nb">Select-Object&lt;/span> &lt;span class="n">FriendlyName&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">InstanceId&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/td>&lt;/tr>&lt;/table>
&lt;/div>
&lt;/div>&lt;p>電腦上若有兩顆以上的接收器，拿掉 &lt;code>-First 1&lt;/code>，改指定實際在用的那一個 &lt;code>InstanceId&lt;/code>。後面的 &lt;code>$radio&lt;/code> 必須是這個物件，否則會寫到錯誤的登錄機碼。&lt;/p>
&lt;h2 id="關閉藍牙接收器的節電">關閉藍牙接收器的節電
&lt;/h2>&lt;p>&lt;code>PnPCapabilities = 24&lt;/code>（十六進位 &lt;code>0x18&lt;/code>）對應裝置管理員裡那一格「允許電腦關閉這個裝置以節省電源」。設成 24 就是取消勾選。&lt;/p>
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&lt;table class="lntable">&lt;tr>&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code>&lt;span class="lnt">1
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&lt;pre tabindex="0" class="chroma">&lt;code class="language-powershell" data-lang="powershell">&lt;span class="line">&lt;span class="cl">&lt;span class="nv">$enum&lt;/span> &lt;span class="p">=&lt;/span> &lt;span class="s2">&amp;#34;HKLM:\SYSTEM\CurrentControlSet\Enum\&lt;/span>&lt;span class="p">$(&lt;/span>&lt;span class="nv">$radio&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="n">InstanceId&lt;/span>&lt;span class="p">)&lt;/span>&lt;span class="s2">&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$enum&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">PnPCapabilities&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">24&lt;/span> &lt;span class="n">-Force&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nv">$dp&lt;/span> &lt;span class="p">=&lt;/span> &lt;span class="nb">Join-Path&lt;/span> &lt;span class="nv">$enum&lt;/span> &lt;span class="s1">&amp;#39;Device Parameters&amp;#39;&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$dp&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">SelectiveSuspendEnabled&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">0&lt;/span> &lt;span class="n">-Force&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$dp&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">EnhancedPowerManagementEnabled&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">0&lt;/span> &lt;span class="n">-Force&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$dp&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">AllowIdleIrpInD3&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">0&lt;/span> &lt;span class="n">-Force&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$dp&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">DeviceSelectiveSuspended&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">0&lt;/span> &lt;span class="n">-Force&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/td>&lt;/tr>&lt;/table>
&lt;/div>
&lt;/div>&lt;p>四個 &lt;code>Device Parameters&lt;/code> 都設 0：不允許選擇性暫停，不使用加強電源管理，不允許在 D3 閒置，並把目前的選擇性暫停狀態清掉。&lt;/p>
&lt;p>藍牙鍵盤節點若存在，也只對它設 &lt;code>PnPCapabilities&lt;/code>。找不到就略過，接收器那一段已經夠用。&lt;/p>
&lt;div class="highlight">&lt;div class="chroma">
&lt;table class="lntable">&lt;tr>&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code>&lt;span class="lnt">1
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&lt;pre tabindex="0" class="chroma">&lt;code class="language-powershell" data-lang="powershell">&lt;span class="line">&lt;span class="cl">&lt;span class="nb">Get-PnpDevice&lt;/span> &lt;span class="n">-Class&lt;/span> &lt;span class="n">Bluetooth&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">Keyboard&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">HIDClass&lt;/span> &lt;span class="p">|&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">Where-Object&lt;/span> &lt;span class="p">{&lt;/span> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">Status&lt;/span> &lt;span class="o">-eq&lt;/span> &lt;span class="s1">&amp;#39;OK&amp;#39;&lt;/span> &lt;span class="o">-and&lt;/span> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">FriendlyName&lt;/span> &lt;span class="o">-match&lt;/span> &lt;span class="s1">&amp;#39;Keyboard|鍵盤&amp;#39;&lt;/span> &lt;span class="o">-and&lt;/span> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">InstanceId&lt;/span> &lt;span class="o">-match&lt;/span> &lt;span class="s1">&amp;#39;BTH&amp;#39;&lt;/span> &lt;span class="p">}&lt;/span> &lt;span class="p">|&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">ForEach-Object&lt;/span> &lt;span class="p">{&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nv">$key&lt;/span> &lt;span class="p">=&lt;/span> &lt;span class="s2">&amp;#34;HKLM:\SYSTEM\CurrentControlSet\Enum\&lt;/span>&lt;span class="p">$(&lt;/span>&lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="n">InstanceId&lt;/span>&lt;span class="p">)&lt;/span>&lt;span class="s2">&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="k">if&lt;/span> &lt;span class="p">(&lt;/span>&lt;span class="nb">Test-Path&lt;/span> &lt;span class="nv">$key&lt;/span>&lt;span class="p">)&lt;/span> &lt;span class="p">{&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">New-ItemProperty&lt;/span> &lt;span class="n">-Path&lt;/span> &lt;span class="nv">$key&lt;/span> &lt;span class="n">-Name&lt;/span> &lt;span class="n">PnPCapabilities&lt;/span> &lt;span class="n">-PropertyType&lt;/span> &lt;span class="n">DWord&lt;/span> &lt;span class="n">-Value&lt;/span> &lt;span class="mf">24&lt;/span> &lt;span class="n">-Force&lt;/span> &lt;span class="p">|&lt;/span> &lt;span class="nb">Out-Null&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nv">$_&lt;/span>&lt;span class="p">.&lt;/span>&lt;span class="py">FriendlyName&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="p">}&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="p">}&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/td>&lt;/tr>&lt;/table>
&lt;/div>
&lt;/div>&lt;h2 id="停用-usb-選擇性暫停">停用 USB 選擇性暫停
&lt;/h2>&lt;p>改的是目前作用中的電源配置，插電與電池都停用。兩個 GUID 是 Windows 電源選項裡的「USB 設定」與「USB 選擇性暫停設定」，不是某一張硬體的編號。&lt;/p>
&lt;div class="highlight">&lt;div class="chroma">
&lt;table class="lntable">&lt;tr>&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code>&lt;span class="lnt">1
&lt;/span>&lt;span class="lnt">2
&lt;/span>&lt;span class="lnt">3
&lt;/span>&lt;/code>&lt;/pre>&lt;/td>
&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code class="language-powershell" data-lang="powershell">&lt;span class="line">&lt;span class="cl">&lt;span class="n">powercfg&lt;/span> &lt;span class="p">/&lt;/span>&lt;span class="n">SETACVALUEINDEX&lt;/span> &lt;span class="n">SCHEME_CURRENT&lt;/span> &lt;span class="n">2a737441&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">1930&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4402&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">8d77-b2bebba308a3&lt;/span> &lt;span class="n">48e6b7a6&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">50f5&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4782&lt;/span>&lt;span class="n">-a5d4&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">53bb8f07e226&lt;/span> &lt;span class="mf">0&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="n">powercfg&lt;/span> &lt;span class="p">/&lt;/span>&lt;span class="n">SETDCVALUEINDEX&lt;/span> &lt;span class="n">SCHEME_CURRENT&lt;/span> &lt;span class="n">2a737441&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">1930&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4402&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">8d77-b2bebba308a3&lt;/span> &lt;span class="n">48e6b7a6&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">50f5&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4782&lt;/span>&lt;span class="n">-a5d4&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">53bb8f07e226&lt;/span> &lt;span class="mf">0&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="n">powercfg&lt;/span> &lt;span class="p">/&lt;/span>&lt;span class="n">SETACTIVE&lt;/span> &lt;span class="n">SCHEME_CURRENT&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/td>&lt;/tr>&lt;/table>
&lt;/div>
&lt;/div>&lt;h2 id="重開機後確認藍牙鍵盤會自動重連">重開機後確認藍牙鍵盤會自動重連
&lt;/h2>&lt;p>有些接收器不能用 &lt;code>Disable-PnpDevice&lt;/code> 重新載入，系統會回報不支援。登錄寫入後直接重開機，不要假設不重開就會生效。&lt;/p>
&lt;p>重開機後用同一組變數核對。&lt;code>$enum&lt;/code> 與 &lt;code>$dp&lt;/code> 要還在這個 PowerShell 工作階段裡；若已關掉視窗，先重跑找出接收器的那段。&lt;/p>
&lt;div class="highlight">&lt;div class="chroma">
&lt;table class="lntable">&lt;tr>&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code>&lt;span class="lnt">1
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&lt;td class="lntd">
&lt;pre tabindex="0" class="chroma">&lt;code class="language-powershell" data-lang="powershell">&lt;span class="line">&lt;span class="cl">&lt;span class="nb">Get-ItemProperty&lt;/span> &lt;span class="nv">$enum&lt;/span> &lt;span class="p">|&lt;/span> &lt;span class="nb">Select-Object&lt;/span> &lt;span class="n">PnPCapabilities&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="nb">Get-ItemProperty&lt;/span> &lt;span class="nv">$dp&lt;/span> &lt;span class="p">|&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl"> &lt;span class="nb">Select-Object&lt;/span> &lt;span class="n">DeviceSelectiveSuspended&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">SelectiveSuspendEnabled&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">EnhancedPowerManagementEnabled&lt;/span>&lt;span class="p">,&lt;/span> &lt;span class="n">AllowIdleIrpInD3&lt;/span>
&lt;/span>&lt;/span>&lt;span class="line">&lt;span class="cl">&lt;span class="n">powercfg&lt;/span> &lt;span class="p">/&lt;/span>&lt;span class="n">q&lt;/span> &lt;span class="n">SCHEME_CURRENT&lt;/span> &lt;span class="n">2a737441&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">1930&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4402&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">8d77-b2bebba308a3&lt;/span> &lt;span class="n">48e6b7a6&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">50f5&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="mf">4782&lt;/span>&lt;span class="n">-a5d4&lt;/span>&lt;span class="p">-&lt;/span>&lt;span class="n">53bb8f07e226&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/td>&lt;/tr>&lt;/table>
&lt;/div>
&lt;/div>&lt;p>對得上的結果：&lt;code>PnPCapabilities&lt;/code> 是 24；四個暫停相關值是 0；AC 與 DC 的 Current Power Setting Index 都是 &lt;code>0x00000000&lt;/code>。接著讓電腦睡眠再醒來。Windows 11 26H2 上的藍牙鍵盤若會自動重連，這組設定就已經生效。&lt;/p>
&lt;h2 id="不要一併改到其他-usb-裝置">不要一併改到其他 USB 裝置
&lt;/h2>&lt;p>只寫藍牙接收器，以及名稱符合鍵盤的藍牙節點。同一組登錄不要套到隨身碟、加密鑰匙或其他 USB 裝置。&lt;/p>
&lt;p>USB 選擇性暫停關掉之後，閒置耗電會高一點。若重開機、睡眠醒來後鍵盤仍要手動重連，再更新該接收器的藍牙驅動。驅動問題和節電問題是兩件事，這篇只處理後者。&lt;/p></description></item></channel></rss>