Comment # 32 on bug 1177428 from Takashi Iwai

Thank you for quick testing.  This concluded that the resume problem is no
regression of the recent firmware files, at least.

Also, could you tell which firmware version did boot properly?  I suppose 20.40
caused the same problem?

BTW, if you get stuck at boot due to the graphics problem, you can boot once
with "nomodeset" boot option, and fix/revert things.  The option will disable
the native DRM driver.  For reverting the manual firmware override, simply
remove files/directories /lib/firmware/update/* and rebuild initrd (call
mkinitrd).