I recently experienced problems installing AV Linux MX-21 “Consciousness" to my Acer Aspire E1-571. I figure I'd share that experience as it might be helpful if someone else has the same problems.
Additional INFO
This laptop is not "stock". When I received it the RAM and hard drive had been removed. I replaced them with what I had on hand. This configuration has worked well and has cause no issue, but it does have only 2GB RAM :(
First Attempt
I made the flash drive and booted up the machine to the live system. All worked fine so I continued to install the system. Choose a single partition install (well 2 counting the swap) and configured the other option. The drive formatted successfully and it started copying the system. Now I just wait for the prompt asking to install the grub menu. . . but that never happened. Suddenly at about 70% the installer window just disappeared off screen. The installer crashed.
More failure
I tried the install a couple more times. Rebooting the system between tries. I also closed down conky, compton and other background apps thinking it might be related to lack of memory. I also tried running updates before installing. Nothing worked. Installer crashed on every attempt.
Success?
Time to try the cli-installer. I booted the live system. Logged out and then switched to TTY1 (<ctrl><alt><F1>). Logged in as root and started the cli-installer. I wish I could provide step by step details here but I did not document the process.
The install completed and it asked to install grub and then asked me to configure timezone, locale, create a user, etc. When done I rebooted . . . and blank screen. X did not start, or it didn't start correctly.
After trying many things regarding the video drivers and such I finally took a look at the slim config /etc/slim.conf. Where I found this:
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default_user demo
I also found this:
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auto_login yes
saved the file, reboot and it worked!!! Apparently the problem was because slim was trying to login a user that did not exist. I've been using it for a couple of days now and all is fine.