Latest Round of Natty will not Boot on FakeRAID 0

Raid is accessed through PDC chip set. Worked fine until upgade to 2.6.38-7.39kernel or installed with same. Boot now fails due to raid partition installed on not found - true for both upgrade and fresh install for that kernel. Live session of same kernel works because file system is loaded from usb key. So loaded all raid access seems normal (ie gparted, nautilus etc.) This is a serious regression that prevents booting Natty on at least raid 0 as well as raid5 or raid10, May be bootable on raid 1.

My further testing of Natty is futile until bug is fixed! The attached bug data was generated bu running the 3/26/11 live image - which is the only way to load a complete system. The problem is reproducible on my raid setup with any fresh install. I haven't tested a kernel rollback yet and probably won't with tax deadline looming.

A synopsis of my test hardwre:10.10 Maverick w/grub2/Mint10 & Natty installed on 2x160gb raid0, Gigabyte AMD MB, AMD 64x4 CPUs at 3.2GHz, 4 GB ram, HD5770 ATI video, dual boot win7 on 64gb ssd and 640gb SATA.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.39
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
   Mixer name : 'Realtek ALC889A'
   Components : 'HDA:10ec0885,1458a102,00100101'
   Controls : 38
   Simple ctrls : 21
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xfdefc000 irq 46'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Mon Mar 28 17:02:25 2011
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 eth1 no wireless extensions.
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110327)
MachineType: Gigabyte Technology Co., Ltd. GA-MA790GP-UD4H
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash --
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-7-generic N/A
 linux-backports-modules-2.6.38-7-generic N/A
 linux-firmware 1.49
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/31/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F1
dmi.board.name: GA-MA790GP-UD4H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF1:bd12/31/2008:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA790GP-UD4H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA790GP-UD4H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA790GP-UD4H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.