I just did a fresh install of Ubuntu 14.04.2 using the official install medium onto my NAS. My NAS contains three drives which I run in a RAID5 configuration with LVM on top. I setup each drive to have a 128MB EFI partition which stores grubx64.efi and put the rest of the drive under the RAID5+LVM configuration. The Ubuntu 14.04.2 and 15.04 installs were happy to let me do that however when I try to boot into the freshly installed system the GRUB command prompt came up.
While I was able to see the LVM partitions using ls I couldn't access them because I needed raid5rec.mod. I booted into a live CD and used grub-mkimage to create a grubx64.efi image which had raid5rec.mod, and all the other modules I needed to boot, embedded into grubx64.efi.
Possible resolutions
1. Store all grub modules on the EFI partition
2. Modify grub-install to create grubx64.efi with all block/file system modules embedded into the image needed to access the partition which contains the grub modules
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.16.0-43-generic.
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D2c', '/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/controlC1', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.values: Error: [Errno 2] No such file or directory
Card1.Amixer.info: Error: [Errno 2] No such file or directory
Card1.Amixer.values: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=/dev/mapper/NAS-SWAP
InstallationDate: Installed on 2015-07-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
lxcbr0 no wireless extensions.
MachineType: ASUS All Series
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-43-generic.efi.signed root=/dev/mapper/NAS-ROOT ro nomdmonddf nomdmonisw
ProcVersionSignature: Ubuntu 3.16.0-43.58~14.04.1-generic 3.16.7-ckt13
RelatedPackageVersions:
linux-restricted-modules-3.16.0-43-generic N/A
linux-backports-modules-3.16.0-43-generic N/A
linux-firmware 1.127.12
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty
Uname: Linux 3.16.0-43-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 05/14/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1201
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: AM1M-A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1201:bd05/14/2015:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnAM1M-A:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1472384
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.