Màj - I solved the probleme by using this tips : https://forums.ubports.com/topic/9022/sony-xperia-x-installation-stuck-on-wiping-partition/7 It is important to wipe data, system & cache before installing. It is possible using TWRP (recovery)

@MrT10001 I can't install ubport on my 32bits ubuntu computer. and it don't work with my debian computer... so, I'm looking for others solution. I have a probleme to install postmarketOS too. I keep you in touch.