For seemingly no reason, the macOS hotkey to control the brightness (control + F1/F2) of my LG UltraFine secondary display has stopped working.
Also, the Sound Preferences do not show LG UltraFine speakers anymore, so I cannot set the sound output to that display.
When I try to open LG Screen Manager, it quits immediately.
Can anyone else using LG UltraFine (23.7" 4K, specifically) confirm facing this issue? Any suggestions on how to fix this?
This Apple bug/personal oversight has become a nuisance on my home setup. Not only can I not control the display and sound on my UltraFine monitor through the iMac, I am unable to send the sound output from my iPad to the monitor. All this was earlier working without any problem.
When going to Apple > About This Mac > Displays, the UltraFine display shows up, implying that the monitor is being identified. But the sound and brightness controls are not working.
I have tried three different devices, an iMac, an iPad, a MBP. Neither worked, leading me to believe that the issue is with macOS/iPadOS.