Comment 9 for bug 1787637

Hi Alec,

I'm marking this bug as Invalid as I believe this is either a grub issue, or a firmware issue.

A. Based on your bug report description:

2) PXE boot at UEFI mode under MAAS using 10Gb add-on NIC with X550T driver, the node was enlisted, commissioned and deployed successfully
3) PXE boot at UEFI mode under different PXE servers, the node with 1Gb add-on NIC works fine.

Since (2) and (3) confirm this works on all hardware but the one you currently testing, this would lead me to believe there may be an issue with the firmware, more than with grub.

B. However, since:

"As a workaround, in order for the node to boot at UEFI mode, bios configuration needed settings are to boot first at IPv6 before IPv4. By doing this unusual procedure, UEFI PXE boot works fine with 1Gb NIC interface. This is the same workaround mentioned by Rod Smith with his comment #21 on Bug #1437024."

Since the work around on Bug #1437024 works for you, that would lead me to believe this is a duplicate issue. Bug #1437024 is a *grub* issue.

C. "This issue has the same symptom (i.e. UEFI PXE grub boot failure) as reported by other reported bugs. Such reports are the ff"

The list you provided, they are all grub related issues.

The only I would lean towards the most is bug 1711203 if you have secure boot enabled. If you can see in such bug report, the fix is in progress for the shim.

That said, I would also considering exploring firmware issues as well since all other hardware works fine.

Hope this helps.