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Please try below:
disable vt-d in bios, do cold power boot, re-enable vt-d in bios,
do cold power boot again.
If DMAR still can not present, you need to contact bios vendor.
Also, please check the result of "virt-host-validate" in native,
if DMAR doesn't present, then you also have problem to run
On 11/15/2019 1:40 AM, Rajagopal
Yes, DMAR table might not exist if vt-d is disabled in BIOS.
On our NUC, we have VT-d enabled in VisualBIOS but, there
is NO option for IPU.
How do we get DMAR tables in this case ?
Yes, DMAR table might not exist if vt-d is disabled in
On 11/8/2019 1:57 AM, Dubravko Moravski | Exor
Embedded S.r.l. wrote:
I'm not an expert but just a user of ACRN; we've had a
similar issue on one of our boards. To enable DMAR
table in ACPI, ensure in BIOS settings that IPU is
disabled, and VT-d instructions are enabled. If you
still have the same error, you'll have to ask your
BIOS provider to add the DMAR table.
We are also trying to run ACRN on NUC5CPYH.
PFA the following ...
- screenshot of the error while running board_parser.py
- o/p of cat /proc/cpuinfo
- screenshot of VisualBios details,
currently configured to UEFI-only mode
Can you please help us get past this ?
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