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| author | i-shm <[email protected]> | 2026-08-29 05:57:15 +0000 |
|---|---|---|
| committer | i-shm <[email protected]> | 2026-08-29 05:57:15 +0000 |
| commit | aa43b41aa9ea292e8b818f63c6238a63fb7890c1 (patch) | |
| tree | a0716e66abb91b4a570e9e463fd82db27927dd77 | |
| parent | 06895bb6352efffd3a09f9f50039d84bdfa4269f (diff) | |
| download | blog-aa43b41aa9ea292e8b818f63c6238a63fb7890c1.tar.gz | |
deploy: 76309b0a559c3cffe9d7b9db74c8c2e217eaf822
35 files changed, 1290 insertions, 565 deletions
diff --git a/2026/08/25/非小细胞肺癌鳞状分化的免疫组化判读及其治疗边界/index.html b/2026/08/25/非小细胞肺癌鳞状分化的免疫组化判读及其治疗边界/index.html index 941c3734..b3af985b 100644 --- a/2026/08/25/非小细胞肺癌鳞状分化的免疫组化判读及其治疗边界/index.html +++ b/2026/08/25/非小细胞肺癌鳞状分化的免疫组化判读及其治疗边界/index.html @@ -317,6 +317,11 @@ <nav class="post-nav"> <div class="prev-item"> + <div class="icon arrow-left"></div> + <div class="post-link"> + <a href="/2026/08/29/%E7%BB%99%E4%B8%80%E5%8F%B0Linux%E7%AC%94%E8%AE%B0%E6%9C%AC%E5%81%9A%E6%9C%8D%E5%8A%A1%E5%99%A8%E5%8C%96%E6%94%B9%E9%80%A0%EF%BC%9A%E4%BC%91%E7%9C%A0%E3%80%81%E5%85%85%E7%94%B5%E4%B8%8A%E9%99%90%E4%B8%8EEC%E5%AF%84%E5%AD%98%E5%99%A8%E8%80%83%E5%8F%A4/">Prev</a> + </div> + </div> <div class="next-item"> diff --git a/2026/08/29/给一台Linux笔记本做服务器化改造:休眠、充电上限与EC寄存器考古/index.html b/2026/08/29/给一台Linux笔记本做服务器化改造:休眠、充电上限与EC寄存器考古/index.html new file mode 100644 index 00000000..71334111 --- /dev/null +++ b/2026/08/29/给一台Linux笔记本做服务器化改造:休眠、充电上限与EC寄存器考古/index.html @@ -0,0 +1,335 @@ +<!DOCTYPE html> +<html lang="en"> + <head> + <meta charset="UTF-8"> +<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> +<meta http-equiv="X-UA-Compatible" content="ie=edge"> + + <meta name="author" content="韩暮秋"> + + + <meta name="subtitle" content="暮秋小屋"> + + + <meta name="description" content="这里是暮秋小屋,思念和灵感的寄存处"> + + + <meta name="keywords" content="韩暮秋,MuqiuHan,'Muqiu Han', 'muqiu han', muqiuhan"> + + + + + <title> + + 给一台 Linux 笔记本做服务器化改造:休眠、充电上限与 EC 寄存器考古 | + 暮秋小屋 + </title> + + + + <link rel="icon" href="/favicon.ico"> + + + + + <!-- stylesheets list from _config.yml --> + + <link rel="stylesheet" href="/css/style.css"> + + + + + <link rel="preload" href="/fonts/FZYouSongS-509R.woff2" as="font" type="font/woff2" crossorigin> + + + + <!-- scripts list from _config.yml --> + + <script + src="/js/menu.js"></script> + + + + + + <script + src="https://polyfill.alicdn.com/polyfill.js?features=es6"></script> + <script + id="MathJax-script" + async + 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关于 + </a> + </li> + + + + <li class="menu-item"> + <a href="/search">搜索</a> + </li> + + </ul> + </nav> + </div> + </div> +</div> + + + <div class="main"> + <div class="flex-container"> + <article id="post"> + + + <div class="post-head"> + <div class="post-info"> + <div class="tag-list"> + + + <span class="post-tag"> + <a href="/tags/Technique/"> + Technique + </a> + </span> + + <span class="post-tag"> + <a href="/tags/Linux/"> + Linux + </a> + </span> + + + </div> + <div class="post-title"> + + + 给一台 Linux 笔记本做服务器化改造:休眠、充电上限与 EC 寄存器考古 + + + </div> + <span class="post-date"> + Aug 29, 2026 + </span> + </div> + <div class="post-img"> + + <div class="h-line-primary"></div> + + </div> +</div> + <div class="post-content"> + <p>一台旧笔记本装上 Hermes Agent 之后,就成了 7×24 挂在家庭网络里的常驻服务机。机器继续服役,但"笔记本"这个出厂身份留下的问题需要逐个拆除:拔电半小时自动休眠、合盖掉线、电池永远充到顶。这篇文章记录一次完整的改造过程——大部分是常规配置,最后一段是真正的硬骨头:Linux 下没有现成驱动的 Redmi EC,如何从固件代码里考古出充电上限的寄存器地址,并把 80% 上限真正写进硬件。</p> +<p>改造对象是 Redmi Book Pro 15 2022,系统 Pop!_OS 24.04,内核 6.18.7。文中所有验证步骤都给出了可复核的证据,文末附完整的脚本清单。</p> +<h2 id="休眠问题的两个来源:一个在用户会话,一个在系统层"><a class="header-anchor" href="#休眠问题的两个来源:一个在用户会话,一个在系统层">¶</a>休眠问题的两个来源:一个在用户会话,一个在系统层</h2> +<p>先说结论:这台机器的自动休眠由两套机制叠加控制,只改任何一处都会被另一处重新睡掉。</p> +<p>第一处在 GNOME。<code>org.gnome.settings-daemon.plugins.power</code> 这组键值把插电和用电池分成两个策略:这台机器出厂默认插电模式 <code>nothing</code>(永不睡),电池模式 <code>suspend</code>(30 分钟无操作就睡)。服务器场景下,这个"电池模式"就是拔电失联的直接原因。禁用只需两条命令:</p> +<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">gsettings <span class="built_in">set</span> org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type <span class="string">'nothing'</span></span><br><span class="line">gsettings <span class="built_in">set</span> org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type <span class="string">'nothing'</span></span><br></pre></td></tr></table></figure> +<p>第二处在 systemd-logind。不处理它,合盖依然会触发 suspend。做法是往 <code>/etc/systemd/logind.conf.d/</code> 放一个drop-in 配置:</p> +<figure class="highlight ini"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="section">[Login]</span></span><br><span class="line"><span class="attr">HandleLidSwitch</span>=ignore</span><br><span class="line"><span class="attr">HandleLidSwitchExternalPower</span>=ignore</span><br><span class="line"><span class="attr">HandleLidSwitchDocked</span>=ignore</span><br><span class="line"><span class="attr">AllowSuspend</span>=<span class="literal">no</span></span><br><span class="line"><span class="attr">AllowHibernation</span>=<span class="literal">no</span></span><br></pre></td></tr></table></figure> +<p><code>AllowSuspend=no</code> 这几行比合盖策略更进一步——它让 suspend/hibernate 这两个电源目标在系统层面不可达。从此无论哪个组件想休眠这台机器,systemd 都会拒绝执行。对服务器而言这是最保险的一层。</p> +<h2 id="充电上限:配置了两年,从来没生效过"><a class="header-anchor" href="#充电上限:配置了两年,从来没生效过">¶</a>充电上限:配置了两年,从来没生效过</h2> +<p>机器上一直装着 TLP,配置文件里写得明明白白:</p> +<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">START_CHARGE_THRESH_BAT0=20</span><br><span class="line">STOP_CHARGE_THRESH_BAT0=80</span><br></pre></td></tr></table></figure> +<p>但电量依然冲到了 94%(对应衰减后的满充点)。原因在 TLP 的工作方式:它自己不碰硬件,只调用内核提供的接口。Linux 内核标准接口是 <code>/sys/class/power_supply/BAT0/charge_control_end_threshold</code>,TLP 依次尝试三种后端——<code>natacpi</code>(内核 ACPI 驱动直写)、<code>acpi_call</code>(通过第三方模块调用任意 ACPI 方法)、<code>sysfs</code>(上述标准接口)。三种在这台机器上全部缺席:Redmi 没有为自家 EC 提交过任何内核驱动,<code>charge_control_end_threshold</code> 文件不存在,<code>acpi_call</code> 也没有安装。</p> +<p>TLP 的处理方式是静默降级——配置留着,什么都不做。这解释了"设置了却充到顶"的全部现象。</p> +<h2 id="从-DSDT-考古:找到-EC-里的充电上限字段"><a class="header-anchor" href="#从-DSDT-考古:找到-EC-里的充电上限字段">¶</a>从 DSDT 考古:找到 EC 里的充电上限字段</h2> +<p>内核不提供接口,就要自己读固件。ACPI 的 DSDT 表是主板固件的执行代码,用 <code>iasl</code> 反汇编后就是一份可检索的"硬件说明书":</p> +<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">cp</span> /sys/firmware/acpi/tables/DSDT /tmp/probe/</span><br><span class="line">iasl -d /tmp/probe/DSDT.bin</span><br></pre></td></tr></table></figure> +<p>在反汇编产物里,<code>Device (EC0)</code> 是嵌入式控制器(Embedded Controller,主板上负责电池、键盘、风扇等底层事务的 8 位单片机)。EC 暴露给 ACPI 的字段表以 <code>Field (ERAM…)</code> 开头,逐项列出每个字段的名称和位宽。搜索电池相关的命名,一段关键结构浮现出来:</p> +<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">Offset (0x80),</span><br><span class="line">ACIN, 1, // AC 已插电</span><br><span class="line">BTIN, 1, // 电池在位</span><br><span class="line">BTST, 4, // 电池状态</span><br><span class="line">ADPW, 8,</span><br><span class="line">BTSN, 16, // 序列号</span><br><span class="line">BTDC, 16, // Design Capacity 设计容量</span><br><span class="line">BTDV, 16, // Design Voltage 设计电压</span><br><span class="line">BTFC, 16, // Full Charge Capacity 满充容量</span><br><span class="line">BTTP, 16,</span><br><span class="line">BTCT, 16, // Cycle Count 循环次数</span><br><span class="line">BTPR, 16, // Present Capacity 当前容量</span><br><span class="line">BTVT, 16, // Voltage 电压</span><br><span class="line">RSOC, 8, // Relative State of Charge 电量百分比</span><br><span class="line">… // 8 个状态位占满一个字节</span><br><span class="line">BTCC, 16, // Charge Cap 充电上限</span><br><span class="line">BATM, 16,</span><br></pre></td></tr></table></figure> +<p>按 ACPI Field 的位累积规则手工推算,每个字段落在 EC RAM 的具体字节位置:电量百分比 RSOC 在偏移 0x92,充电上限 BTCC 在 0x95-0x96(16 位小端)。这台机器的 EC RAM 通过内存映射窗口 <code>0xFE0B0400</code> 可直接访问。</p> +<p>推断需要验证。验证方法是交叉比对:把 32 个字节一次性读出来,看各项读数能否和系统已知的数值对上。实际读取结果:</p> +<table> +<thead> +<tr> +<th>EC 字段</th> +<th>读数</th> +<th>系统对照值</th> +<th>结果</th> +</tr> +</thead> +<tbody> +<tr> +<td>RSOC</td> +<td>89%</td> +<td>upower 实时 89%(自放电后的实时值)</td> +<td>命中</td> +</tr> +<tr> +<td>BTDC</td> +<td>4664 mAh × 15440 mV = 72.0 Wh</td> +<td>energy_full_design 72.012 Wh</td> +<td>命中</td> +</tr> +<tr> +<td>BTFC</td> +<td>3939 mAh → 60.8 Wh</td> +<td>energy_full 60.818 Wh</td> +<td>命中</td> +</tr> +<tr> +<td>BTFC/BTDC</td> +<td>84.5%</td> +<td>电池健康度 84.455%</td> +<td>命中</td> +</tr> +<tr> +<td>BTPR/BTFC</td> +<td>88.9%</td> +<td>≈ RSOC 89%,内部自洽</td> +<td>命中</td> +</tr> +</tbody> +</table> +<p>六项全部命中,偏移表确认无误。这次读取还带来一个意外收获:<strong>循环次数 1196 次</strong>——内核 sysfs 一直报 0,真实数字一直躺在 EC 里。84.5% 的健康度对一千二百次循环来说衰减曲线相当正常,而 80% 上限从现在开始会显著放缓后续衰减。</p> +<p>验证时 BTCC 读数为 0,即从未有系统写入过它——TLP 静默失效、小米自己的管理软件从未在 Linux 侧运行,这个字段空了两年。</p> +<h2 id="写入与固化:从一次性验证到开机自启"><a class="header-anchor" href="#写入与固化:从一次性验证到开机自启">¶</a>写入与固化:从一次性验证到开机自启</h2> +<p>写入本身是对内存映射窗口的 2 字节操作。用 <code>dd</code> 定位到 <code>0xFE0B0495</code>,写入小端编码的 80,读回确认 EC 接受。行为验证更直接:写入时电量 87%,高于上限,状态立即表现为 Discharging(拒绝充电);电量自然回落到 83% 后,状态转为 Charging——EC 正在按"低于 80 才充、充到 80 停"的逻辑工作。</p> +<p>EC 的值在冷启动后可能复位,所以最后一步是固化:一个 20 行的 shell 脚本(写入 + 最多 5 次读回重试 + 写 syslog),注册成 oneshot 的 systemd 服务,<code>WantedBy=multi-user.target</code>。每次开机自动重写。日志验证一行即可:<code>journalctl -t ec-charge-limit</code>。</p> +<h2 id="为什么绕了这么多路"><a class="header-anchor" href="#为什么绕了这么多路">¶</a>为什么绕了这么多路</h2> +<p>这套探索的完整链条值得复盘,因为它演示了一个通用模式:<strong>当厂商不为 Linux 提供驱动时,固件代码是最后的、也是完全可靠的文档</strong>。</p> +<p>TLP 配置存在但从未生效,说明用户态工具依赖于内核 ABI 的覆盖面。内核接口缺失时,<code>acpi_call</code> 这类"万能调用器"是第一层补救——但它的前提仍是 ACPI 层存在可调用的方法。DSDT 反汇编显示这台机器的 EC 确实声明了 BTCC 字段,但没有任何 AML 代码(ACPI 层的解释执行代码)读写它——小米把充电控制做成了纯 EC 寄存器协议,只有 Windows 侧的私有驱动知道怎么写。这一层是 acpi_call 也救不了的,于是只剩最后一条路:直接读写 EC RAM。</p> +<p>这已经触及了此类探索的边界。直接写 EC 是有真实风险的操作——这段内存窗口同时被固件本身使用,写错偏移可能影响风扇、键盘背光乃至供电策略。整个过程中风险控制靠三件事:所有写入前先完成只读交叉验证(六个字段全命中才敢写);写入目标收窄到 2 字节;写入后立即读回并观察行为。至于回滚,同样的通道写 100 就能恢复原状。</p> +<h2 id="交付清单"><a class="header-anchor" href="#交付清单">¶</a>交付清单</h2> +<p>改造后的最终状态:</p> +<ul> +<li>拔电、合盖均不休眠,suspend 目标在 systemd 层全局禁用</li> +<li>充电到 80% 由 EC 强制执行,不依赖任何用户态进程存活</li> +<li>开机自动重写上限,冷启动不丢配置</li> +<li>电池档案:设计 72 Wh,满充 60.8 Wh(健康度 84.5%),循环 1196 次</li> +</ul> +<p>完整脚本已归档:<code>setup-server-power.sh</code>(休眠部分)、<code>acpi-probe-battery.sh</code>(DSDT 反汇编 + 只读探测)、<code>ec-verify-readonly.sh</code>(字段交叉验证)、<code>ec-set-charge-limit.sh</code>(写入与行为观察)、<code>power-rollback.sh</code>(一键回滚)。如果你有一台同样"EC 沉默"的笔记本,这套只读验证优先的流程可以直接复用——先证明地址表是对的,再谈写入。</p> + +</div> + +<script> + window.onload = detectors(); +</script> + <div class="post-footer"> + <div class="h-line-primary"></div> + <nav class="post-nav"> + <div class="prev-item"> + + </div> + <div class="next-item"> + + <div class="icon arrow-right"></div> + <div class="post-link"> + <a href="/2026/08/25/%E9%9D%9E%E5%B0%8F%E7%BB%86%E8%83%9E%E8%82%BA%E7%99%8C%E9%B3%9E%E7%8A%B6%E5%88%86%E5%8C%96%E7%9A%84%E5%85%8D%E7%96%AB%E7%BB%84%E5%8C%96%E5%88%A4%E8%AF%BB%E5%8F%8A%E5%85%B6%E6%B2%BB%E7%96%97%E8%BE%B9%E7%95%8C/">Next</a> + </div> + + </div> + </nav> +</div> + + + <div class="post-comment"> + + + + + + + +</div> + + +</article> + </div> + </div> + + <div class="footer"> + <div class="flex-container"> + <div class="footer-text"> + + + 韩暮秋 | + + + 希望路过的人可以添点柴火让这里暖和点 + + </div> + </div> +</div> + + + 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+ <div class="post-list-item"> + <div class="post-title"> <a href="/2024/07/23/OCaml-News-2024-6/"> OCaml News 2024-6 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2024/05/07/%E4%BA%8C%E3%80%87%E4%BA%8C%E5%9B%9B%E5%B9%B4%E4%BA%94%E6%9C%88%E4%B8%83%E6%97%A5/"> - - 二〇二四年五月七日 - - </a> - </div> - - <span class="post-date">May 7, 2024</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/11/index.html b/archives/page/11/index.html index 81e70d8e..fd001aea 100644 --- a/archives/page/11/index.html +++ b/archives/page/11/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2024/05/07/%E4%BA%8C%E3%80%87%E4%BA%8C%E5%9B%9B%E5%B9%B4%E4%BA%94%E6%9C%88%E4%B8%83%E6%97%A5/"> + + 二〇二四年五月七日 + + </a> + </div> + + <span class="post-date">May 7, 2024</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2024/04/08/%E4%BA%8C%E3%80%87%E4%BA%8C%E5%9B%9B%E5%B9%B4%E5%9B%9B%E6%9C%88%E5%85%AB%E6%97%A5/"> 二〇二四年四月八日 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2024/01/22/Rescript-React-Native/"> - - Rescript and React Native - - </a> - </div> - - <span class="post-date">Jan 22, 2024</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/12/index.html b/archives/page/12/index.html index 3f808371..835caee7 100644 --- a/archives/page/12/index.html +++ b/archives/page/12/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2024/01/22/Rescript-React-Native/"> + + Rescript and React Native + + </a> + </div> + + <span class="post-date">Jan 22, 2024</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2024/01/18/OCaml-News-2024-2/"> OCaml News 2024-2 @@ -321,24 +339,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2023/10/25/Radiographic-Absence-of-the-Left-Humeral-Head/"> - - Radiographic Absence of the Left Humeral Head - - </a> - </div> - - <span class="post-date">Oct 25, 2023</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/13/index.html b/archives/page/13/index.html index 444a8959..7114dafd 100644 --- a/archives/page/13/index.html +++ b/archives/page/13/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2023/10/25/Radiographic-Absence-of-the-Left-Humeral-Head/"> + + Radiographic Absence of the Left Humeral Head + + </a> + </div> + + <span class="post-date">Oct 25, 2023</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2023/10/25/%E8%82%BA%E7%82%8E%E6%94%AF%E5%8E%9F%E4%BD%93%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9/"> 肺炎支原体注意事项 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2023/08/27/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E5%85%AB%E6%9C%88%E4%BA%8C%E5%8D%81%E4%B8%83%E6%97%A5/"> - - 二零二三年八月二十七日 - - </a> - </div> - - <span class="post-date">Aug 27, 2023</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/14/index.html b/archives/page/14/index.html index c767b1d3..b1564f91 100644 --- a/archives/page/14/index.html +++ b/archives/page/14/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2023/08/27/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E5%85%AB%E6%9C%88%E4%BA%8C%E5%8D%81%E4%B8%83%E6%97%A5/"> + + 二零二三年八月二十七日 + + </a> + </div> + + <span class="post-date">Aug 27, 2023</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2023/08/21/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E5%85%AB%E6%9C%88%E4%BA%8C%E5%8D%81%E4%B8%80%E6%97%A5/"> 二零二三年八月二十一日 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2023/06/22/%E7%81%AF%E7%AC%BC%E8%8D%89/"> - - 灯笼草 - - </a> - </div> - - <span class="post-date">Jun 22, 2023</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/15/index.html b/archives/page/15/index.html index 69fbae4b..489bb308 100644 --- a/archives/page/15/index.html +++ b/archives/page/15/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2023/06/22/%E7%81%AF%E7%AC%BC%E8%8D%89/"> + + 灯笼草 + + </a> + </div> + + <span class="post-date">Jun 22, 2023</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2023/06/17/%E5%8F%91%E7%83%AD%E5%8F%8A%E8%B6%85%E9%AB%98%E7%83%AD%E5%8D%B1%E8%B1%A1/"> 发热及超高热危象 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2023/03/14/%E5%91%8B%E5%A1%9E%E7%B1%B3/"> - - 呋塞米 - - </a> - </div> - - <span class="post-date">Mar 14, 2023</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/16/index.html b/archives/page/16/index.html index dcc6cb1f..9f4f0521 100644 --- a/archives/page/16/index.html +++ b/archives/page/16/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2023/03/14/%E5%91%8B%E5%A1%9E%E7%B1%B3/"> + + 呋塞米 + + </a> + </div> + + <span class="post-date">Mar 14, 2023</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2023/03/13/%E6%9B%BF%E7%B1%B3%E6%B2%99%E5%9D%A6/"> 替米沙坦 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2023/02/02/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E4%BA%8C%E6%9C%88%E4%BA%8C%E6%97%A5/"> - - 二零二三年二月二日 - - </a> - </div> - - <span class="post-date">Feb 2, 2023</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/17/index.html b/archives/page/17/index.html index 26adaea2..aca44e6b 100644 --- a/archives/page/17/index.html +++ b/archives/page/17/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2023/02/02/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E4%BA%8C%E6%9C%88%E4%BA%8C%E6%97%A5/"> + + 二零二三年二月二日 + + </a> + </div> + + <span class="post-date">Feb 2, 2023</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2023/02/01/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%89%E5%B9%B4%E4%BA%8C%E6%9C%88%E4%B8%80%E6%97%A5/"> 二零二三年二月一日 @@ -321,26 +339,6 @@ </div> - - - - - <div class="year-title">2021</div> - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2021/03/27/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%80%E5%B9%B4%E4%B8%89%E6%9C%88%E4%BA%8C%E5%8D%81%E4%B8%83%E6%97%A5/"> - - 二零二一年三月二十七日 - - </a> - </div> - - <span class="post-date">Mar 27, 2021</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/18/index.html b/archives/page/18/index.html index 3a0557fc..2a85a63e 100644 --- a/archives/page/18/index.html +++ b/archives/page/18/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2021/03/27/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%80%E5%B9%B4%E4%B8%89%E6%9C%88%E4%BA%8C%E5%8D%81%E4%B8%83%E6%97%A5/"> + + 二零二一年三月二十七日 + + </a> + </div> + + <span class="post-date">Mar 27, 2021</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2021/03/15/%E4%BA%8C%E9%9B%B6%E4%BA%8C%E4%B8%80%E5%B9%B4%E4%B8%89%E6%9C%88%E5%8D%81%E4%BA%94%E6%97%A5/"> 二零二一年三月十五日 diff --git a/archives/page/2/index.html b/archives/page/2/index.html index b288c999..19ccb75e 100644 --- a/archives/page/2/index.html +++ b/archives/page/2/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2026/03/21/%E5%B0%8F%E8%B0%88-NestJS-Zod/"> + + 小谈 NestJS Zod + + </a> + </div> + + <span class="post-date">Mar 21, 2026</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2026/03/16/Nginx-%E5%89%8D%E5%90%8E%E7%AB%AF%E5%90%8C%E5%9F%9F%E5%88%86%E6%B5%81/"> Nginx 前后端同域分流 @@ -321,24 +339,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/12/20/%E8%B0%88%E8%B0%88%E8%BD%AF%E4%BB%B6%E5%B7%A5%E7%A8%8B/"> - - 谈谈软件工程 - - </a> - </div> - - <span class="post-date">Dec 20, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/3/index.html b/archives/page/3/index.html index ed7b6bc4..35962459 100644 --- a/archives/page/3/index.html +++ b/archives/page/3/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2025/12/20/%E8%B0%88%E8%B0%88%E8%BD%AF%E4%BB%B6%E5%B7%A5%E7%A8%8B/"> + + 谈谈软件工程 + + </a> + </div> + + <span class="post-date">Dec 20, 2025</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2025/12/19/%E4%B8%B4%E5%BA%8A%E7%A0%94%E7%A9%B6%E4%B8%AD%E7%9B%B2%E6%80%81%E8%A7%84%E5%88%99%E5%AD%98%E5%9C%A8%E7%9A%84%E5%8E%9F%E5%9B%A0/"> 临床研究中盲态规则存在的原因 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/10/29/%E5%BA%93%E6%AC%A3%E7%BB%BC%E5%90%88%E5%BE%81/"> - - 库欣综合征 - - </a> - </div> - - <span class="post-date">Oct 29, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/4/index.html b/archives/page/4/index.html index d9379731..8af525dc 100644 --- a/archives/page/4/index.html +++ b/archives/page/4/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2025/10/29/%E5%BA%93%E6%AC%A3%E7%BB%BC%E5%90%88%E5%BE%81/"> + + 库欣综合征 + + </a> + </div> + + <span class="post-date">Oct 29, 2025</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2025/10/28/sufactants/"> 表面活性剂 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/07/29/nestjs-nested-object-dto/"> - - NestJS 嵌套查询参数解析错误分析与解决方案 - - </a> - </div> - - <span class="post-date">Jul 29, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/5/index.html b/archives/page/5/index.html index abd66927..23c7ed80 100644 --- a/archives/page/5/index.html +++ b/archives/page/5/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2025/07/29/nestjs-nested-object-dto/"> + + NestJS 嵌套查询参数解析错误分析与解决方案 + + </a> + </div> + + <span class="post-date">Jul 29, 2025</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2025/07/11/fuck-hcho/"> 由甲醛开始的碎碎念 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/05/07/nestjs-bullmq-mail-business/"> - - NestJS bullmq 邮件发送业务中的小 tips - - </a> - </div> - - <span class="post-date">May 7, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/6/index.html b/archives/page/6/index.html index c082ade9..da409607 100644 --- a/archives/page/6/index.html +++ b/archives/page/6/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2025/05/07/nestjs-bullmq-mail-business/"> + + NestJS bullmq 邮件发送业务中的小 tips + + </a> + </div> + + <span class="post-date">May 7, 2025</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2025/04/20/linux-amd-screen-boom/"> Linux 下 AMD 显卡屏幕画面闪烁问题修复方案 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/03/20/%E8%82%BA%E5%8A%9F%E8%83%BD%E6%A3%80%E6%9F%A5%E6%95%B0%E5%80%BC/"> - - 肺功能检查数值 - - </a> - </div> - - <span class="post-date">Mar 20, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/7/index.html b/archives/page/7/index.html index ab38a48c..b00340a3 100644 --- a/archives/page/7/index.html +++ b/archives/page/7/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2025/03/20/%E8%82%BA%E5%8A%9F%E8%83%BD%E6%A3%80%E6%9F%A5%E6%95%B0%E5%80%BC/"> + + 肺功能检查数值 + + </a> + </div> + + <span class="post-date">Mar 20, 2025</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2025/03/19/%E9%A2%86%E5%9F%9F%E9%A9%B1%E5%8A%A8%E8%AE%BE%E8%AE%A1%E4%B8%AD%E8%81%9A%E5%90%88%E6%A0%B9%E6%8C%81%E4%B9%85%E5%8C%96%E5%92%8C%E4%BA%8B%E4%BB%B6%E5%8F%91%E5%B8%83%E5%8F%AF%E8%83%BD%E5%AF%BC%E8%87%B4%E6%95%B0%E6%8D%AE%E4%B8%8D%E4%B8%80%E8%87%B4%E9%97%AE%E9%A2%98/"> 领域驱动设计中聚合根持久化和事件发布可能导致数据不一致问题 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2025/01/19/%E8%BA%AB%E4%BD%93%E5%BE%80%E5%89%8D%E5%80%BE%EF%BC%8C%E7%81%B5%E9%AD%82%E5%90%91%E5%90%8E%E6%91%87/"> - - 身体往前倾,灵魂向后摇 - - </a> - </div> - - <span class="post-date">Jan 19, 2025</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/8/index.html b/archives/page/8/index.html index 73fb729a..7b03f081 100644 --- a/archives/page/8/index.html +++ b/archives/page/8/index.html @@ -159,6 +159,26 @@ + <div class="year-title">2025</div> + + + <div class="post-list-item"> + <div class="post-title"> + <a href="/2025/01/19/%E8%BA%AB%E4%BD%93%E5%BE%80%E5%89%8D%E5%80%BE%EF%BC%8C%E7%81%B5%E9%AD%82%E5%90%91%E5%90%8E%E6%91%87/"> + + 身体往前倾,灵魂向后摇 + + </a> + </div> + + <span class="post-date">Jan 19, 2025</span> + </div> + + + + + + <div class="year-title">2024</div> @@ -319,24 +339,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2024/09/27/Turborepo-%E7%AE%80%E8%BF%B0/"> - - Turborepo 简述 - - </a> - </div> - - <span class="post-date">Sep 27, 2024</span> - </div> - - <div id="paginator"> <div class=paginator> diff --git a/archives/page/9/index.html b/archives/page/9/index.html index 31e0badb..464e5462 100644 --- a/archives/page/9/index.html +++ b/archives/page/9/index.html @@ -164,6 +164,24 @@ <div class="post-list-item"> <div class="post-title"> + <a href="/2024/09/27/Turborepo-%E7%AE%80%E8%BF%B0/"> + + Turborepo 简述 + + </a> + </div> + + <span class="post-date">Sep 27, 2024</span> + </div> + + + + + + + + <div class="post-list-item"> + <div class="post-title"> <a href="/2024/09/15/%E8%82%A9%E5%91%A8%E7%82%8E%E5%92%8C%E8%82%A9%E8%A2%96%E6%8D%9F%E4%BC%A4%E7%9A%84%E5%8C%BA%E5%88%AB/"> 肩周炎和肩袖损伤的区别 @@ -319,24 +337,6 @@ </div> - - - - - - <div class="post-list-item"> - <div class="post-title"> - <a href="/2024/08/02/%E4%BA%8C%E3%80%87%E4%BA%8C%E5%9B%9B%E5%B9%B4%E5%85%AB%E6%9C%88%E4%B8%80%E6%97%A5/"> - - 二〇二四年八月一日 - - </a> - </div> - - <span class="post-date">Aug 2, 2024</span> - </div> - - <div 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- overflow: auto hidden; -} - -mjx-container[display="true"] + br { - display: none; -} -</style></head> + <meta name="generator" content="Hexo 6.3.0"></head> <body> <div class="wrapper"> diff --git a/page/3/index.html b/page/3/index.html index 4524673b..226641fc 100644 --- a/page/3/index.html +++ b/page/3/index.html @@ -61,7 +61,119 @@ - <meta name="generator" content="Hexo 6.3.0"></head> + <meta name="generator" content="Hexo 6.3.0"><style>mjx-container[jax="SVG"] { + direction: ltr; +} + +mjx-container[jax="SVG"] > svg { + overflow: visible; +} + +mjx-container[jax="SVG"][display="true"] { + display: block; + text-align: center; + margin: 1em 0; +} + +mjx-container[jax="SVG"][justify="left"] { + text-align: left; +} + +mjx-container[jax="SVG"][justify="right"] { + text-align: right; +} + +g[data-mml-node="merror"] > g { + fill: red; + stroke: red; +} + +g[data-mml-node="merror"] > rect[data-background] { + fill: yellow; + stroke: none; +} + +g[data-mml-node="mtable"] > line[data-line] { + stroke-width: 70px; + fill: none; +} + +g[data-mml-node="mtable"] > rect[data-frame] { + stroke-width: 70px; + fill: none; +} + +g[data-mml-node="mtable"] > .mjx-dashed { + stroke-dasharray: 140; +} + +g[data-mml-node="mtable"] > .mjx-dotted { + stroke-linecap: round; + stroke-dasharray: 0,140; +} + +g[data-mml-node="mtable"] > svg { + overflow: visible; +} + +[jax="SVG"] mjx-tool { + display: inline-block; + position: relative; + width: 0; + height: 0; +} + +[jax="SVG"] mjx-tool > mjx-tip { + position: absolute; + top: 0; + left: 0; +} + +mjx-tool > mjx-tip { + display: inline-block; + padding: .2em; + border: 1px solid #888; + font-size: 70%; + background-color: #F8F8F8; + color: black; + box-shadow: 2px 2px 5px #AAAAAA; +} + +g[data-mml-node="maction"][data-toggle] { + cursor: pointer; +} + +mjx-status { + display: block; + position: fixed; + left: 1em; + bottom: 1em; + min-width: 25%; + padding: .2em .4em; + border: 1px solid #888; + font-size: 90%; + background-color: #F8F8F8; + color: black; +} + +foreignObject[data-mjx-xml] { + font-family: initial; + line-height: normal; + overflow: visible; +} + +.MathJax path { + stroke-width: 3; +} + +mjx-container[display="true"] { + overflow: auto hidden; +} + +mjx-container[display="true"] + br { + display: none; +} +</style></head> <body> <div class="wrapper"> @@ -151,21 +151,6 @@ </tags> </entry> <entry> - <title>Adolescent Onset of Acute Heart Failure</title> - <url>/2023/11/21/Adolescent-Onset-of-Acute-Heart-Failure/</url> - <content><![CDATA[<p>心力衰竭一般是常见于成人的,主要继发于高血压和冠状动脉疾病。 青少年的病因很广泛,包括心肌炎、心肌病、结构性心脏病、营养缺乏、代谢紊乱、高血压危象和心律失常等。在发达国家,先天性心脏病和心肌病是儿童心力衰竭的两大主要原因,而在发展中国家,主要原因包括感染和严重贫血。 尽管原因不同,但青少年心力衰竭的表现与成人相似。常见症状包括呼吸困难、外周水肿、端坐呼吸、咳嗽、喘息和继发于水肿的阵发性夜间呼吸困难,但也可能包括非特异性症状,如疲劳、恶心、厌食或液体潴留导致的体重增加。表现形式差异很大,包括无明显症状、充血性心力衰竭体征,极端情况下表现为心源性休克。同样,体检也可能存在很大差异。如果患者患有代偿性心力衰竭,则可以进行相对良性的检查。</p> -<p>心力衰竭的一些不易被察觉但高度相关的检查结果包括有:心动过速、心音异常(奔马律、舒张期杂音或病理性收缩期杂音)、呼吸急促和肝肿大。胸部X光片和心电图(ECG)可能显示非特异性发现。胸片可显示心脏肥大伴肺充血。心电图结果通常是非特异性的。 这篇文章对青少年心力衰竭的罕见和常见原因进行了概述。</p> -<ul> -<li><a href="/papers/Approach%20to%20Idiopathic%20Anaphylaxis%20in%20Adolescents.pdf">原始文章</a></li> -</ul> -<h2 id="其他"><a class="header-anchor" href="#其他">¶</a>其他</h2> -<p>端坐呼吸或端坐呼吸是平躺时发生的呼吸短促,导致患者不得不支撑在床上或坐在椅子上睡觉。它通常被视为心力衰竭的晚期表现,是由于液体重新分布到中央循环,导致肺毛细血管压力增加并导致呼吸困难所致。它也见于腹部肥胖或肺部疾病的情况。端坐呼吸与平呼吸相反,平呼吸是指坐或站直时呼吸急促会加重。</p> -]]></content> - <tags> - <tag>Medicine</tag> - </tags> - </entry> - <entry> <title>A Brief History of Just-In-Time</title> <url>/2023/09/28/A-Brief-History-of-Just-In-Time/</url> <content><![CDATA[<p>Software systems have been using “just-in-time” compilation (JIT) techniques since the<br> @@ -204,6 +189,21 @@ such systems. This classification emerges as we survey forty years of JIT work, </tags> </entry> <entry> + <title>Adolescent Onset of Acute Heart Failure</title> + <url>/2023/11/21/Adolescent-Onset-of-Acute-Heart-Failure/</url> + <content><![CDATA[<p>心力衰竭一般是常见于成人的,主要继发于高血压和冠状动脉疾病。 青少年的病因很广泛,包括心肌炎、心肌病、结构性心脏病、营养缺乏、代谢紊乱、高血压危象和心律失常等。在发达国家,先天性心脏病和心肌病是儿童心力衰竭的两大主要原因,而在发展中国家,主要原因包括感染和严重贫血。 尽管原因不同,但青少年心力衰竭的表现与成人相似。常见症状包括呼吸困难、外周水肿、端坐呼吸、咳嗽、喘息和继发于水肿的阵发性夜间呼吸困难,但也可能包括非特异性症状,如疲劳、恶心、厌食或液体潴留导致的体重增加。表现形式差异很大,包括无明显症状、充血性心力衰竭体征,极端情况下表现为心源性休克。同样,体检也可能存在很大差异。如果患者患有代偿性心力衰竭,则可以进行相对良性的检查。</p> +<p>心力衰竭的一些不易被察觉但高度相关的检查结果包括有:心动过速、心音异常(奔马律、舒张期杂音或病理性收缩期杂音)、呼吸急促和肝肿大。胸部X光片和心电图(ECG)可能显示非特异性发现。胸片可显示心脏肥大伴肺充血。心电图结果通常是非特异性的。 这篇文章对青少年心力衰竭的罕见和常见原因进行了概述。</p> +<ul> +<li><a href="/papers/Approach%20to%20Idiopathic%20Anaphylaxis%20in%20Adolescents.pdf">原始文章</a></li> +</ul> +<h2 id="其他"><a class="header-anchor" href="#其他">¶</a>其他</h2> +<p>端坐呼吸或端坐呼吸是平躺时发生的呼吸短促,导致患者不得不支撑在床上或坐在椅子上睡觉。它通常被视为心力衰竭的晚期表现,是由于液体重新分布到中央循环,导致肺毛细血管压力增加并导致呼吸困难所致。它也见于腹部肥胖或肺部疾病的情况。端坐呼吸与平呼吸相反,平呼吸是指坐或站直时呼吸急促会加重。</p> +]]></content> + <tags> + <tag>Medicine</tag> + </tags> + </entry> + <entry> <title>Advanced C binding using ocaml-ctypes and dune</title> <url>/2024/09/15/Advanced-C-binding-using-ocaml-ctypes-and-dune/</url> <content><</code> C API.</p> @@ -6759,6 +6759,96 @@ NestJS 依赖其底层 HTTP 适配器(默认为 Express)来解析传入的� </tags> </entry> <entry> + <title>给一台 Linux 笔记本做服务器化改造:休眠、充电上限与 EC 寄存器考古</title> + <url>/2026/08/29/%E7%BB%99%E4%B8%80%E5%8F%B0Linux%E7%AC%94%E8%AE%B0%E6%9C%AC%E5%81%9A%E6%9C%8D%E5%8A%A1%E5%99%A8%E5%8C%96%E6%94%B9%E9%80%A0%EF%BC%9A%E4%BC%91%E7%9C%A0%E3%80%81%E5%85%85%E7%94%B5%E4%B8%8A%E9%99%90%E4%B8%8EEC%E5%AF%84%E5%AD%98%E5%99%A8%E8%80%83%E5%8F%A4/</url> + <content><![CDATA[<p>一台旧笔记本装上 Hermes Agent 之后,就成了 7×24 挂在家庭网络里的常驻服务机。机器继续服役,但"笔记本"这个出厂身份留下的问题需要逐个拆除:拔电半小时自动休眠、合盖掉线、电池永远充到顶。这篇文章记录一次完整的改造过程——大部分是常规配置,最后一段是真正的硬骨头:Linux 下没有现成驱动的 Redmi EC,如何从固件代码里考古出充电上限的寄存器地址,并把 80% 上限真正写进硬件。</p> +<p>改造对象是 Redmi Book Pro 15 2022,系统 Pop!_OS 24.04,内核 6.18.7。文中所有验证步骤都给出了可复核的证据,文末附完整的脚本清单。</p> +<h2 id="休眠问题的两个来源:一个在用户会话,一个在系统层"><a class="header-anchor" href="#休眠问题的两个来源:一个在用户会话,一个在系统层">¶</a>休眠问题的两个来源:一个在用户会话,一个在系统层</h2> +<p>先说结论:这台机器的自动休眠由两套机制叠加控制,只改任何一处都会被另一处重新睡掉。</p> +<p>第一处在 GNOME。<code>org.gnome.settings-daemon.plugins.power</code> 这组键值把插电和用电池分成两个策略:这台机器出厂默认插电模式 <code>nothing</code>(永不睡),电池模式 <code>suspend</code>(30 分钟无操作就睡)。服务器场景下,这个"电池模式"就是拔电失联的直接原因。禁用只需两条命令:</p> +<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">gsettings <span class="built_in">set</span> org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type <span class="string">'nothing'</span></span><br><span class="line">gsettings <span class="built_in">set</span> org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type <span class="string">'nothing'</span></span><br></pre></td></tr></table></figure> +<p>第二处在 systemd-logind。不处理它,合盖依然会触发 suspend。做法是往 <code>/etc/systemd/logind.conf.d/</code> 放一个drop-in 配置:</p> +<figure class="highlight ini"><table><tr><td class="code"><pre><span class="line"><span class="section">[Login]</span></span><br><span class="line"><span class="attr">HandleLidSwitch</span>=ignore</span><br><span class="line"><span class="attr">HandleLidSwitchExternalPower</span>=ignore</span><br><span class="line"><span class="attr">HandleLidSwitchDocked</span>=ignore</span><br><span class="line"><span class="attr">AllowSuspend</span>=<span class="literal">no</span></span><br><span class="line"><span class="attr">AllowHibernation</span>=<span class="literal">no</span></span><br></pre></td></tr></table></figure> +<p><code>AllowSuspend=no</code> 这几行比合盖策略更进一步——它让 suspend/hibernate 这两个电源目标在系统层面不可达。从此无论哪个组件想休眠这台机器,systemd 都会拒绝执行。对服务器而言这是最保险的一层。</p> +<h2 id="充电上限:配置了两年,从来没生效过"><a class="header-anchor" href="#充电上限:配置了两年,从来没生效过">¶</a>充电上限:配置了两年,从来没生效过</h2> +<p>机器上一直装着 TLP,配置文件里写得明明白白:</p> +<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">START_CHARGE_THRESH_BAT0=20</span><br><span class="line">STOP_CHARGE_THRESH_BAT0=80</span><br></pre></td></tr></table></figure> +<p>但电量依然冲到了 94%(对应衰减后的满充点)。原因在 TLP 的工作方式:它自己不碰硬件,只调用内核提供的接口。Linux 内核标准接口是 <code>/sys/class/power_supply/BAT0/charge_control_end_threshold</code>,TLP 依次尝试三种后端——<code>natacpi</code>(内核 ACPI 驱动直写)、<code>acpi_call</code>(通过第三方模块调用任意 ACPI 方法)、<code>sysfs</code>(上述标准接口)。三种在这台机器上全部缺席:Redmi 没有为自家 EC 提交过任何内核驱动,<code>charge_control_end_threshold</code> 文件不存在,<code>acpi_call</code> 也没有安装。</p> +<p>TLP 的处理方式是静默降级——配置留着,什么都不做。这解释了"设置了却充到顶"的全部现象。</p> +<h2 id="从-DSDT-考古:找到-EC-里的充电上限字段"><a class="header-anchor" href="#从-DSDT-考古:找到-EC-里的充电上限字段">¶</a>从 DSDT 考古:找到 EC 里的充电上限字段</h2> +<p>内核不提供接口,就要自己读固件。ACPI 的 DSDT 表是主板固件的执行代码,用 <code>iasl</code> 反汇编后就是一份可检索的"硬件说明书":</p> +<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">cp</span> /sys/firmware/acpi/tables/DSDT /tmp/probe/</span><br><span class="line">iasl -d /tmp/probe/DSDT.bin</span><br></pre></td></tr></table></figure> +<p>在反汇编产物里,<code>Device (EC0)</code> 是嵌入式控制器(Embedded Controller,主板上负责电池、键盘、风扇等底层事务的 8 位单片机)。EC 暴露给 ACPI 的字段表以 <code>Field (ERAM…)</code> 开头,逐项列出每个字段的名称和位宽。搜索电池相关的命名,一段关键结构浮现出来:</p> +<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">Offset (0x80),</span><br><span class="line">ACIN, 1, // AC 已插电</span><br><span class="line">BTIN, 1, // 电池在位</span><br><span class="line">BTST, 4, // 电池状态</span><br><span class="line">ADPW, 8,</span><br><span class="line">BTSN, 16, // 序列号</span><br><span class="line">BTDC, 16, // Design Capacity 设计容量</span><br><span class="line">BTDV, 16, // Design Voltage 设计电压</span><br><span class="line">BTFC, 16, // Full Charge Capacity 满充容量</span><br><span class="line">BTTP, 16,</span><br><span class="line">BTCT, 16, // Cycle Count 循环次数</span><br><span class="line">BTPR, 16, // Present Capacity 当前容量</span><br><span class="line">BTVT, 16, // Voltage 电压</span><br><span class="line">RSOC, 8, // Relative State of Charge 电量百分比</span><br><span class="line">… // 8 个状态位占满一个字节</span><br><span class="line">BTCC, 16, // Charge Cap 充电上限</span><br><span class="line">BATM, 16,</span><br></pre></td></tr></table></figure> +<p>按 ACPI Field 的位累积规则手工推算,每个字段落在 EC RAM 的具体字节位置:电量百分比 RSOC 在偏移 0x92,充电上限 BTCC 在 0x95-0x96(16 位小端)。这台机器的 EC RAM 通过内存映射窗口 <code>0xFE0B0400</code> 可直接访问。</p> +<p>推断需要验证。验证方法是交叉比对:把 32 个字节一次性读出来,看各项读数能否和系统已知的数值对上。实际读取结果:</p> +<table> +<thead> +<tr> +<th>EC 字段</th> +<th>读数</th> +<th>系统对照值</th> +<th>结果</th> +</tr> +</thead> +<tbody> +<tr> +<td>RSOC</td> +<td>89%</td> +<td>upower 实时 89%(自放电后的实时值)</td> +<td>命中</td> +</tr> +<tr> +<td>BTDC</td> +<td>4664 mAh × 15440 mV = 72.0 Wh</td> +<td>energy_full_design 72.012 Wh</td> +<td>命中</td> +</tr> +<tr> +<td>BTFC</td> +<td>3939 mAh → 60.8 Wh</td> +<td>energy_full 60.818 Wh</td> +<td>命中</td> +</tr> +<tr> +<td>BTFC/BTDC</td> +<td>84.5%</td> +<td>电池健康度 84.455%</td> +<td>命中</td> +</tr> +<tr> +<td>BTPR/BTFC</td> +<td>88.9%</td> +<td>≈ RSOC 89%,内部自洽</td> +<td>命中</td> +</tr> +</tbody> +</table> +<p>六项全部命中,偏移表确认无误。这次读取还带来一个意外收获:<strong>循环次数 1196 次</strong>——内核 sysfs 一直报 0,真实数字一直躺在 EC 里。84.5% 的健康度对一千二百次循环来说衰减曲线相当正常,而 80% 上限从现在开始会显著放缓后续衰减。</p> +<p>验证时 BTCC 读数为 0,即从未有系统写入过它——TLP 静默失效、小米自己的管理软件从未在 Linux 侧运行,这个字段空了两年。</p> +<h2 id="写入与固化:从一次性验证到开机自启"><a class="header-anchor" href="#写入与固化:从一次性验证到开机自启">¶</a>写入与固化:从一次性验证到开机自启</h2> +<p>写入本身是对内存映射窗口的 2 字节操作。用 <code>dd</code> 定位到 <code>0xFE0B0495</code>,写入小端编码的 80,读回确认 EC 接受。行为验证更直接:写入时电量 87%,高于上限,状态立即表现为 Discharging(拒绝充电);电量自然回落到 83% 后,状态转为 Charging——EC 正在按"低于 80 才充、充到 80 停"的逻辑工作。</p> +<p>EC 的值在冷启动后可能复位,所以最后一步是固化:一个 20 行的 shell 脚本(写入 + 最多 5 次读回重试 + 写 syslog),注册成 oneshot 的 systemd 服务,<code>WantedBy=multi-user.target</code>。每次开机自动重写。日志验证一行即可:<code>journalctl -t ec-charge-limit</code>。</p> +<h2 id="为什么绕了这么多路"><a class="header-anchor" href="#为什么绕了这么多路">¶</a>为什么绕了这么多路</h2> +<p>这套探索的完整链条值得复盘,因为它演示了一个通用模式:<strong>当厂商不为 Linux 提供驱动时,固件代码是最后的、也是完全可靠的文档</strong>。</p> +<p>TLP 配置存在但从未生效,说明用户态工具依赖于内核 ABI 的覆盖面。内核接口缺失时,<code>acpi_call</code> 这类"万能调用器"是第一层补救——但它的前提仍是 ACPI 层存在可调用的方法。DSDT 反汇编显示这台机器的 EC 确实声明了 BTCC 字段,但没有任何 AML 代码(ACPI 层的解释执行代码)读写它——小米把充电控制做成了纯 EC 寄存器协议,只有 Windows 侧的私有驱动知道怎么写。这一层是 acpi_call 也救不了的,于是只剩最后一条路:直接读写 EC RAM。</p> +<p>这已经触及了此类探索的边界。直接写 EC 是有真实风险的操作——这段内存窗口同时被固件本身使用,写错偏移可能影响风扇、键盘背光乃至供电策略。整个过程中风险控制靠三件事:所有写入前先完成只读交叉验证(六个字段全命中才敢写);写入目标收窄到 2 字节;写入后立即读回并观察行为。至于回滚,同样的通道写 100 就能恢复原状。</p> +<h2 id="交付清单"><a class="header-anchor" href="#交付清单">¶</a>交付清单</h2> +<p>改造后的最终状态:</p> +<ul> +<li>拔电、合盖均不休眠,suspend 目标在 systemd 层全局禁用</li> +<li>充电到 80% 由 EC 强制执行,不依赖任何用户态进程存活</li> +<li>开机自动重写上限,冷启动不丢配置</li> +<li>电池档案:设计 72 Wh,满充 60.8 Wh(健康度 84.5%),循环 1196 次</li> +</ul> +<p>完整脚本已归档:<code>setup-server-power.sh</code>(休眠部分)、<code>acpi-probe-battery.sh</code>(DSDT 反汇编 + 只读探测)、<code>ec-verify-readonly.sh</code>(字段交叉验证)、<code>ec-set-charge-limit.sh</code>(写入与行为观察)、<code>power-rollback.sh</code>(一键回滚)。如果你有一台同样"EC 沉默"的笔记本,这套只读验证优先的流程可以直接复用——先证明地址表是对的,再谈写入。</p> +]]></content> + <tags> + <tag>Technique</tag> + <tag>Linux</tag> + </tags> + </entry> + <entry> <title>什么玩意儿都是</title> <url>/2024/09/07/%E7%BB%99%E5%AD%A9%E5%AD%90%E4%BB%AC%E7%9A%84%E8%AF%9D/</url> <content><