I've tried to install Ubuntu mate 18.04 quite a few times and in different ways, but I always get the same problem.
When I boot up and log in everything works fine for a few seconds, until Welcome app shows up.
When it happens, the system goes back to the locked screen and I if I log in again the same thing happen over and over.
Is there a fix for it?
I tried download the iso again at least 2 times, tried UEFI and legacy mode, with or without dual boot and nothing happened, this bug continues.
Using the system through the USB works fine, it only happens when I install Ubuntu and boot up from the hd.
I don't know if my explanation was clear, but if it is necessary I could send a video.