Comment 4 for bug 1878943

Seems to work happily (including wifi) if the "cma-256" parameter (the maximum) is changed to one of the lower values - I've tested the lowest ("cma-64") but haven't had time to try the larger values (96, 128, 192) yet. Still it does appear something's changed between Core 18 and Core 20 in this regard as Core 18 used "cma-256" happily. It might simply be that Core 20's kernel/initrd require significantly more memory for some reason?