Screen flickering in Qubes 4.1 on Tuxedo InfinityBook Pro 14 Gen6

The dracut command didn’t work:

--regenerate-all cannot be called with a image file

I used --regenerate not --regenerate-all, but that’s the error I got.

I don’t see nomodeset in /etc/default/grub. Where else should I look?

intelfb (but not i915) is blacklisted in two files in /usr/lib/modprobe.d/. Does this matter?

My system uses GRUB. Isn’t GRUB the only relevant part in the ArchWiki page? The information there is the same you guys said on the other thread. Or am I missing something?