I have a new laptop (Lenovo 14s) with an AMD Radeon Lexa E9171 display controller.
Running the installer (of USB stick), it does boot, and I have tried choosing both free and non-free drivers, but when it gets to the 'starting X' part, it spits out a load of errors (that scroll off the screen too fast to see the start of it).
I also tried an old version, 16.10 (or 16.08) off CD, but it does the same thing.
I've tried booting some 'utils' as a test: gparted, rescatux, and they both boot fine into the X system.
I also tried the Debian installer, it booted and I didn't go past the first screen (keyboard choice ?), but it seamed to be into a graphical display with mouse...
Any suggestions ?
I've been on Manjaro for a couple of years now, the only problems I've ever had are with the installer, on different machines...