[arch-general] Problematic boot on 202104 iso

[SET]

Hello,

While installing a new machine, the 202104 iso failed to complete the boot 
process, stalling with a blinking cursor at 

0.003625 __common_interrupt: 1.55 No irg handler for vector
0.003625 __common_interrupt: 2.55 No irq handler for vector
0.003625 __common_interrupt: 3.55 No irq handler for vector
0.003625 __common_interrupt: 4.55 No irq handler for vector
0.003625 __common_interrupt: 5.55 No irq handler for vector
0.003625 __common_interrupt: 6.55 No irqg handler for vector
0.003625 __common_interrupt: 7.55 No irq handler for vector
0.003625 __common_interrupt: 8.55 No irqg handler for vector
0.003625 __common_interrupt: 9.55 No irq handler for vector
0.003625 __common_interrupt: 10.55 No irq handler for vector
:: running early hook [udev |
Starting version 247 .4-2-arch
:: running early hook [archiso_pxe_nbd]l
:: rumning hook [udevl
:: Triggering uevents...

It's a desktop PC having UEFI firmware, with CSM disabled, secure boot disabled 
and fast boot off.

The same result is obtained while booting from an internal DVD drive and from 
a USB stick. Noise and lights from the devices suggest that the booting 
process is completing without updating the display; that's just a guess 
however.

I could boot from 202011 on DVD, and from 201907 from a USB stick.

It may be host dependent; reporting FYI, if it could ever be reproduced and 
eventually fixed.

Regards.