Bug #221

ASUS KCMA-D8 doesn't POST reliably when CMOS is completely cleared of vendor data

Added by Sean Rhone over 2 years ago.

Status:NewStart date:07/19/2019
Priority:NormalDue date:
Assignee:-% Done:


Category:board support
Target version:-


I noticed that if I flash Coreboot, and wipe the CMOS out completely (remove the battery and power for a bit), sometimes my system won't POST. Might work the first time, might take a reset or two, and worst-case it took 5 resets in a row for it to POST.

If I boot the ASUS vendor BIOS, remove the BIOS chip, and replace it with a Coreboot chip, it seemingly POSTs fine consistently.

For Coreboot, I'm using the CMOS for NVRAM, and also the option that loads defaults every boot.

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