This should affect all linux-firmware >= 1.157.13 (factory image has 1.157.12~somerville4, xenial-updates has 1.157.22).
The only work-around so far is to remove /lib/firmware/i915/kbl_dmc_ver1_01.bin (and /lib/firmware/i915/kbl_dmc_ver1_04.bin if available).
This should affect all linux-firmware >= 1.157.13 (factory image has 1.157.12~ somerville4, xenial-updates has 1.157.22).
The only work-around so far is to remove /lib/firmware/ i915/kbl_ dmc_ver1_ 01.bin (and /lib/firmware/ i915/kbl_ dmc_ver1_ 04.bin if available).