Starlink 的天線在五十度時會過熱停機

也是在 Hacker News 首頁上看到的資訊,Starlink 的天線在五十度時會停機:「Starlink dishes go into “thermal shutdown” once they hit 122° Fahrenheit」。

這篇報導是出自 Reddit 上的消息,苦主住在亞利桑那州,美國的南部地區,以緯度來說的話大概跟大阪差不多:「This could be a problem. Only noon in AZ...」。

Reddit 的討論裡面有提到用撒水的方式降溫,但這樣對熱帶與亞熱帶地區好像不太友善啊,陽光大一點應該就會過熱?看起來是個得改善的點了...

Linux Kernel 5.7 釋出...

在「The New Features Of The Linux 5.7 Kernel: Tiger Lake Graphics Stable, New exFAT, Zstd F2FS, Performance」這邊有列出重點來。


Thermal pressure tracking for systems that are thermally overloaded for better task placement on CPU cores running hot.

另外一個是把 exFAT 驅動換成由 Samsung 維護的版本,照其他文章的說明,這個版本比較穩定...

The new exFAT file-system driver that replaces the exFAT driver in the staging area that had been around for a few releases. This new exFAT driver is in much better shape and actively maintained by Samsung.


透過手機螢幕上的餘熱猜測 PIN 碼

利用手機螢幕上的餘熱分析可能的 PIN 碼:「Heat traces left by fingers can reveal your smartphone PIN」,在輸入完 PIN 碼的 30 秒內的準確度都還是很高 (80%):

The report further revealed that if the thermal image is collected within 15 seconds of a PIN being entered, the technique is accurate almost 90% of the time. At 30 seconds, this accuracy decreased slightly to 80%. At 45 seconds or more, the accuracy dropped to 35% and below.