前提条件是安装RDM这个应用

步骤1:查询显示器参数

终端命令ioreg -lw0 | grep IODisplayPrefsKey,查询苹果显示器、外接显示器的vendorID和productID

步骤2:生成分辨率参数

在这个网站(可能需要翻墙)

https://codeclou.github.io/Display-Override-PropertyList-File-Parser-and-Generator-with-HiDPI-Support-For-Scaled-Resolutions/

输入vendorID和productID,以及你想要的分辨率(勾选HiDPI就表示2倍逻辑分辨率的高清效果),获得plist配置文件,并下载到download文件夹里备用

推荐直接使用下面这些,基本覆盖了常见的分辨率(请注意这只是plist配置文件里的分辨率部分的内容)

 <data>AAACgAAAAeAAAAAB</data>

 <data>AAADIAAAAlgAAAAB</data>

 <data>AAADSAAAAg0AAAAB</data>

 <data>AAAEAAAAAoAAAAABACAAAA==</data>

 <data>AAAEAAAAAwAAAAAB</data>

 <data>AAAEgAAAAtAAAAAB</data>

 <data>AAAFAAAAAtAAAAABACAAAA==</data>

 <data>AAAFAAAAAtAAAAAJACAAAA==</data>

 <data>AAAFAAAAAyAAAAAB</data>

 <data>AAAFAAAAAyAAAAABACAAAA==</data>

 <data>AAAFoAAAA4QAAAAB</data>

 <data>AAAFoAAAA4QAAAABACAAAA==</data>

 <data>AAAFoAAAAyo=</data>

 <data>AAAFoAAAAyoAAAABACAAAA==</data>

 <data>AAAGcgAABBoAAAAB</data>

 <data>AAAGcgAABBoAAAAJAKAAAA==</data>

 <data>AAAGkAAAA7EAAAABACAAAA==</data>

 <data>AAAGkAAABBoAAAABACAAAA==</data>

 <data>AAAGQAAAA+gAAAABACAAAA==</data>

 <data>AAAGQAAAA4QAAAABACAAAA==</data>

 <data>AAAHgAAABDgAAAABACAAAA==</data>

 <data>AAAHgAAABDgAAAAJACAAAA==</data>

 <data>AAAHgAAABLAAAAABACAAAA==</data>

 <data>AAAHgAAABLAAAAAJAKAAAA==</data>

 <data>AAAIAAAABQAAAAAB</data>

 <data>AAAIAAAABQAAAAAJAKAAAA==</data>

 <data>AAAKAAAABaAAAAABACAAAA==</data>

 <data>AAAKAAAABaAAAAAJAKAAAA==</data>

 <data>AAAKAAAABkAAAAABACAAAA==</data>

 <data>AAAKAAAABkAAAAAJAKAAAA==</data>

 <data>AAALQAAABlQ=</data>

 <data>AAALQAAABlQAAAABACAAAA==</data>

 <data>AAALQAAABwgAAAAB</data>

 <data>AAALQAAABwgAAAAJAKAAAA==</data>

 <data>AAANIAAACDQAAAAB</data>

 <data>AAANIAAACDQAAAAJAKAAAA==</data>

 <data>AAAMgAAABwgAAAABACAAAA==</data>

 <data>AAAMgAAAB9AAAAABACAAAA==</data>

 

步骤3:关闭macOS的SIP保护(附:查询SIP状态的命令是csrutil status)

关机。左手按住 Command + R 两个键不松开,右手按一下 电源键开机,继续按住 Command+R,直到屏幕出现 苹果 logo + 进度条,看到 logo 后,松开 Command+R,等待进入恢复模式

再在恢复模式里打开终端,输入命令csrutil disable,盲输密码。然后重启电脑,在重点里输入csrutil status,确认SIP已关闭

 

步骤4:复制plist配置文件到系统文件夹里

打开终端,输入sudo mount -uw /,临时打开系统敏感文件/文件夹的写入权限(需要盲输密码。这个写入权限时临时的,它会在MacBook重启后自动关闭)

然后在系统文件夹里创建显示器供应商的文件。示例:

创建文件夹(为了防止遗漏,把系统文件夹的两个路径都操作了)

sudo mkdir -p /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-610(这是LG)

sudo mkdir -p /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac(这是戴尔)

sudo mkdir -p /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-4d79(这是京东方)

sudo mkdir -p /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-260210(只是为了测试创建效果)

sudo mkdir -p /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-610

sudo mkdir -p /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac

sudo mkdir -p /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-4d79

sudo mkdir -p /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-260210(只是为了测试创建效果)

然后复制plist配置文件

sudo cp ~/Downloads/DisplayProductID-a029.plist /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-610/DisplayProductID-a029(意思是:把download文件夹里的DisplayProductID-a029.plist数据复制到系统文件夹DisplayVendorID-610里的DisplayProductID-a029文件里去)

sudo cp ~/Downloads/DisplayProductID-d08e.plist /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac/DisplayProductID-d08e

sudo cp ~/Downloads/DisplayProductID-2380.plist /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-4d79/DisplayProductID-2380

sudo cp ~/Downloads/DisplayProductID-a029.plist /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-610/DisplayProductID-a029

sudo cp ~/Downloads/DisplayProductID-d08e.plist /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac/DisplayProductID-d08e

sudo cp ~/Downloads/DisplayProductID-2380.plist /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-4d79/DisplayProductID-2380

 

步骤5:重启电脑

 

步骤6:打开RDM,在里面选择分辨率(带闪电标志的就是高清分辨率)

忘了说一个最最重要的:

大多数MacBook都是16:10分辨率,而一般的外接显示器都是16:9分辨率,而且是非高清。如果不使用RDM来设置,外接显示器不但模糊,左右两侧还有黑边,视觉效果很差。不用外接显示器吧,MacBook的屏幕偏小;用吧,大屏又模糊,很难受。

用这个方法后,外接显示器也得到铺满屏幕的高清效果,很值得一试

另外:

如果把MacBook的显示器也设置成16:9比例,你还能意外收获“刘海彻底消失”MacBook屏幕。强烈推荐被刘海屏折磨的朋友试一试

步骤7:重新打开SIP保护(安全问题不能松懈)

关机。左手按住 Command + R 两个键不松开,右手按一下 电源键开机,继续按住 Command+R,直到屏幕出现 苹果 logo + 进度条,看到 logo 后,松开 Command+R,等待进入恢复模式

再在恢复模式里打开终端,输入命令csrutil enable,盲输密码。然后重启电脑,在重点里输入csrutil status,确认SIP已重新打开

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