Dell cannot know what Apple changed from macOS 12 Monterey to macOS 13 Ventura. But whatever Apple did change, it created many issues with our Dell monitors that were previously working fine in macOS 12 Monterey. See the Apple Forum threads.
In safe mode, it worked. I deleted all pre-login items and apps from macOS. But in normal startup, the U4919DW gives a pixel image regardless if I change the resolution. I have another Dell monitor which is P series 24" and it worked in normal startup of the same laptop. Only the Dell U4919DW cannot work in normal startup. I have also updated the latest firmware and DDPM listed in the Dell website. Please advise as I have no idea what to do next? [IMAGE]
U4919DW, macOS Ventura not working