write SD with UMS enabler and manjaro graphic bug in configuration

[John (the 2nd one)]

Hello, my quick setup:
-a rooted phone
-pop os linux
-windows 10 64
-a micro sd
-and this pinephone

-time to lost

I bought a PINEPHONE – with Convergence one week ago.

I first simply tryed to configure it on manjaro default system but there is a persistent manjaro graphic bug. I am blocked on landscape side (i am not sure of this translation) and i just have a half screen, i couldn't finish the setup. I forced reboot a lot, shaked it, but nothing happened.

I've then flashed OS on sdcard with my rooted phone and this app and etcher (and after rufus). The flash succed each time with arch(pinephone) and jumpdrive(pinephone) but whent I put the sd THE PHONE ALWAYS BOOT ON MANJARO.
So, I'm looking for a solution.

I have all read the pine wiki and the noob one but I found nothing about.

I am sorry, I just want do disserve my personal interest, sorry for my english and please be nasty I am a big noob.

Thanks for your reading.