console=ttyUSB0 no_console_suspend kernel args seem to aggravate already broken external keyboard input

[primalmotion]

So I'm having a lot of troubles with multimonitors, wakeup and swaylock. When I wake up from suspend, if my laptop screen is off, swaylock will not accept any input from my external keyboard. The only way to make it start accept keyboard is to open my lid to activate my laptop screen. Then both keyboards work.

I worked around with ungodly scripts that force to enable my laptop monitor when going to sleep, and keep it on until I unlock swaylock.

That worked for a few days, until I needed to enable a serial console with the kernel arguments console=ttyUSB0 no_console_suspend.

With these options, that seem pretty much unrelated, swaylock NEVER accepts any input (from my laptop keyboard or external keyboard). I have to switch tty, login and run killall -SIGUSR1 swaylock (so my keyboards are perfectly working)

[primalmotion]

more tests confirm that it's no_console_suspend that causes this issue