Comment 10 for bug 1510120

Not sure if this comment is appropriate for this bug or a new bug report however with the release MAAS 1.9 we are unable to boot via UEFI however legacy boot does still work. The service starts the PXE process and then ends up at the grub prompt without continuing.

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MAAS clusterd.log
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2016-01-06 14:29:06+0000 [TFTP (UDP)] Datagram received from ('10.40.2.33', 1595): <RRQDatagram(filename=bootx64.efi, mode=octet, options={'tsize': '0', 'blksize': '1468'})>
2016-01-06 14:29:06+0000 [-] RemoteOriginReadSession starting on 48264
2016-01-06 14:29:06+0000 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f02255b31b8>
2016-01-06 14:29:06+0000 [RemoteOriginReadSession (UDP)] Got error: <tftp.datagram.ERRORDatagram object at 0x7f022bf9f810>
2016-01-06 14:29:06+0000 [-] (UDP Port 48264 Closed)
2016-01-06 14:29:06+0000 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f02255b31b8>
2016-01-06 14:29:07+0000 [TFTP (UDP)] Datagram received from ('10.40.2.33', 1596): <RRQDatagram(filename=bootx64.efi, mode=octet, options={'blksize': '1468'})>
2016-01-06 14:29:07+0000 [-] RemoteOriginReadSession starting on 44794
2016-01-06 14:29:07+0000 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f0225615f80>
2016-01-06 14:29:07+0000 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2016-01-06 14:29:07+0000 [-] (UDP Port 44794 Closed)
2016-01-06 14:29:07+0000 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f0225615f80>
2016-01-06 14:29:07+0000 [TFTP (UDP)] Datagram received from ('10.40.2.33', 1597): <RRQDatagram(filename=grubx64.efi, mode=octet, options={'blksize': '512'})>
2016-01-06 14:29:07+0000 [-] RemoteOriginReadSession starting on 43350
2016-01-06 14:29:07+0000 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f0225615368>
2016-01-06 14:29:07+0000 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2016-01-06 14:29:07+0000 [-] (UDP Port 43350 Closed)
2016-01-06 14:29:07+0000 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f0225615368>
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I have attached screenshots of the PXE boot process and the grub prompt waiting. This is using Ubuntu 14.04 as the commissioning image however due to hardware being new the hwe-v kernel is being used. The machine is configured for UEFI booting only and legacy booting is currently disabled. Server is a SuperMicro 6028R-E1CR12L