TL;DR: How can I add a custom boot parameter (i915.enable_guc=2) to my bluefin installation?
Long story:
I have installed Bluefin on a Tuxedo laptop (Infinitybook Pro 16 - Gen8) around a month ago, and this week I started encountering a very annoying issue with which sometimes the laptop suddenly reboot itself, with no apparent reason.
I don’t know why I haven’t encountered this issue before with Bluefin, but now that it happened, I remembered I had to face the exact same behavior months ago when I was running PopOS! on this laptop and, when contacting the Tuxedo customer support, they suggested me to add i915.enable_guc=2 as a boot parameter.
I have no clue on what that parameter means (nor about what a boot parameter is tbh), but it seemed to solve the issue back then and so maybe I could try it out now as well.
Which leads me here: how can I add this parameter to a bluefin installation?
(On PopOS! it was done using the kernelstub utility, while on Ubuntu-based systems I think I should edit /etc/default/grub, but on Bluefin both options are not applicable)