If the Laptop External Monitor is not working ... When you already have 2 monitors and a third monitor is connected, the new monitor may display nothing even though it is visible in the Windows ...
It was already known that you could plug an external display into it if you used a USB ... connector for the device’s built-in touch screen overlay, but that broke his no modifications rule.
Fernando Silva of 9to5Mac came up with a clever workaround to have ‘clamshell mode’ in iPadOS 17 when an iPad is connected to an external display. The catch: it doesn’t really turn off the iPad’s ...