I recently got an Asus Zenbook UX433FA dh, 16 Gb of ram, 8Th generation Intel Core i7-8565u quad Core Processor (8M Cache, up to 4.1 GHz) graphic card: UHD Graphics 620. I successfully installed ubuntu 18.04 using a usb bootdrive. The issue arise after updating ubuntu through the software update center. I looked for any additional drivers on the software update app and it did not find any. Now upon booting I get stuck on a purple screen. Here is what I have try so far:
- access boot option by pressing e and run nomodeset quiet splash without ro -> sometimes I can login but the resolution is very low and cannot be changed along with the brightness that is high and cannot be changed sometimes I get stuck at the purple screen.
- tried using nomoedeset only, quiet splash only -> boot to the purple screen
- tried beignet-opencl, no difference (or don't know because inconsistent)
- tried xserver-xorg-video-intel mesa-utils (dependency problem with xserver-xorg-core) -> worse now only black screen never login
I looked every where online tried to fix it with a friend familiar with linux nothing seems to worked so far!
Edit It looks like this may be an issue with intel-microcode see this thread with the same question that is more active: Ubuntu 18.04.2 boot stuck on purple screen after updates