Fixing Black/Reversed X11 Windows on Mouse Movement on M1/M2 Macs

For some strange reason, with the new ARM based Macs with X11 xquartz from either the official download, or from Mac Ports, when a remote java (of course it’s a problem with java), when the mouse moves, the colors of the window(s) will invert, making them very difficult to see/read. Fortunately, there is a simple … Read more

NFS Exports on MacOS

If you have tried to export a filesystem from your Mac to be used on another host, you might have had problems getting it to connect. The problem turns out to be simple, though the errors are… obtuse. For me, when I set up a share in /etc/exports, and tried to mount it from a … Read more

Quick Way to Verify a MacOS Application Integrity

If you ever have an app that seems to be having problems launching, you can quickly check the integrity with the spctl command: spctl –assess -vv /Applications/<Application>.app As an example, if I wanted to check the integrity of Handbrake (a kick-ass video encoder), the command would be: spctl –assess -vv /Applications/ The output you should … Read more

Fixing Quicklook Without Rebooting

Unfortunately, since the last OS update for the Mac (Monterey), QuickLook has become especially unstable, especially on my M1 Mac Mini. It doesn’t cause crashes or anything, it simply stops working; especially with video files. However there is a simple solution to the problem. From the Terminal, just run the command (you do not need … Read more