Hi,
On my acer swift 3 (SF314-51), I can't boot on my device since 4.19.198 (no issue with 4.19.197) without adding "acpi=off" in the parameters. Same thing happens on 5.12.19 (didn't happened in 5.12.16), 5.13.4 and .5 and 5.10.52.

If acpi is not off issue is :
-black screen after grub
- no errors, no activity (tested by leaving the pc 10 hours), no tty, no logs whatsoever in journalctl as if the kernel didn't start. Even adding 'debug' or 'initcall_debug' doesn't show anything.
If I add acpi=off, the screen blinks one time and boots normally but after kernel 5.10 (5.12 and 5.13) I loose usage of keyboard and touchpad.

Notes:
- I'm using Manjaro KDE
- I have tested with 4.19.198 Vanilla (config file attached) and same thing happened
- setting nomodeset doesn't change anything
- tried every acpi parameters, only =off worked
- Bios was not updated, but the bug persisted after upgrading it
- Acpi issue is recurrent with this pc it seems below 4.11 (https://askubuntu.com/questions/929904/cant-pass-the-acpi-off-problem)

Thank you for your help,
Adrien