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Bug #221

open

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

Added by Sean Rhone almost 3 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
board support
Target version:
-
Start date:
07/19/2019
Due date:
% Done:

0%

Estimated time:
Affected versions:
Needs backport to:
Affected hardware:
Affected OS:

Description

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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