Second monitor showing as "No Monitor" after Sequoia 15.4.1 (24E263)

[Macron]

Originally Posted by paulosoaresf

Second monitor showing as Geometry Dash "No Monitor" after Sequoia 15.4.1 (24E263) - screenshot attached.

any ideas?

After updating to Sequoia 15.4.1 (24E263), my second monitor stopped working and now shows up as "No Monitor" under display settings. It was functioning perfectly before the update, so I’m fairly certain this is a compatibility or driver issue introduced in this version.

I’ve tried the usual fixes: unplugging and replugging the monitor, switching cables, restarting the system, and even resetting NVRAM/PRAM. Nothing seems to restore the second display. It’s incredibly frustrating, especially for those of us who rely on dual-monitor setups for work.