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在非 4K 的螢幕上跑 HiDPI

 2 years ago
source link: https://blog.gslin.org/archives/2021/11/07/10408/%e5%9c%a8%e9%9d%9e-4k-%e7%9a%84%e8%9e%a2%e5%b9%95%e4%b8%8a%e8%b7%91-hidpi/
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在非 4K 的螢幕上跑 HiDPI

前幾天看到 BetterDummy 這個專案,作者在 M1 上面外接 24" 1440p 的螢幕,但沒辦法啟用 HiDPI,於是就寫了一個軟體來解:

M1 macs tend to have issues with custom resolutions. Notoriously they don't allow sub-4K resolution displays to have HiDPI ("Retina") resolutions even though (for example) a 24" QHD 1440p display would greatly benefit from having an 1920x1080 HiDPI "Retina" mode.

在這之前的解法都有些麻煩,一種是買個 dummy dongle 去騙 macOS,另外是用 mirror 的方式使用:

To fix this issue, some resort to buying a 4K HDMI dummy dongle to fool macOS into thinking that a 4K display is connected and then mirror the contents of this dummy display to their actual monitor in order to have HiDPI resolutions available. Others use the built in screens of their MacBooks to mirror to the external display. These approaches have obvious drawbacks and cannot solve all problems.

作者提供的軟體可以先建立 Dummy Monitor,然後再透過 mirror 掛到實際螢幕上:

不確定用起來如何,但如果之後有需要的話好像可以測試看看...

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February 13, 2006

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修正 Mac 外接螢幕的 Underscan 問題

公司的 MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) 透過 HDMI 接 Dell P2419H 一直都有 Underscan 的問題: 出自「About overscan and underscan on your Mac, Apple TV, or other display」 本來想透過 Underscan slide 修改 (像是下面這張圖),但發現系統內沒有 Underscan slide。 出自「About overscan and underscan on your Mac, Apple TV, or other display」 找了不少文章後後來是在「Fixing Issues…

April 12, 2019

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居然在安全性漏洞的 PoC 上面看到拿 Bad Apple!! 當作範例

人在日本的資安專家 Hector Martin 找到了 Apple M1 的安全漏洞,可以不用透過 macOS Big Sur 提供的界面,直接透過 M1 的漏洞跨使用者權限傳輸資料,這可以用在突破 sandbox 的限制。而也如同目前的流行,他取了一個好記的名字:「M1RACLES: M1ssing Register Access Controls Leak EL0 State」,對應的 CVE 是 CVE-2021-30747。 先講比較特別的點,PoC 的影片放在 YouTube 上,作者拿 Bad Apple!! 當作示範,這很明顯是個雙關的點: 這應該是當年的影繪版本,看了好懷念啊... 當年看到的時候有種「浪費才能」的感覺,但不得不說是個經典。 在 Hacker News 上有討論可以翻翻:「M1racles: An Apple M1 covert channel vulnerability (m1racles.com)」。 依照作者的說明,Apple A14 因為架構類似,也有類似的問題,不過作者沒有 iPhone,沒辦法實際測試: Are…

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a611ee8db44c8d03a20edf0bf5a71d80?s=49&d=identicon&r=gAuthor Gea-Suan LinPosted on November 7, 2021Categories Computer, MacOS, Murmuring, OS, SoftwareTags 4k, apple, display, dongle, dummy, hidpi, m1, mac, macos, mirror, mode, monitor, retina, screen, workaround

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