Comment 0 for bug 1084783

When I installed kernel 3.6 (and later 3.6.1) I found it can't boot my system.
But with kernel 3.5.0-17 (from distro) all is fine. Next messages appears
during boot with kernel 3.6(.1):

ata7: ACPI get timing mode failed (AE 0x300b)
ata7: ACPI get timing mode failed (AE 0x300b)
ata7: ACPI get timing mode failed (AE 0x300b)
ata7: prereset failed (errno=-19)
ata7: reset failed, giving up

ata8: ACPI get timing mode failed (AE 0x300b)
ata8: ACPI get timing mode failed (AE 0x300b)
ata8: ACPI get timing mode failed (AE 0x300b)
ata8: prereset failed (errno=-19)
ata8: reset failed, giving up

Gave up waiting for root device. Common problems:
- Boot args (cat /proc/cmdline)
  - Check rootdelay= (did the system wait long enough?)
  - Check root= (did the system wait for the right device?)
- Missing modules (cat /proc/modules; ls /dev)

ALERT! /dev/disk/by-uuid/8e6ab4ba-b981-4821-8683-9fa908a748e5 does not exist.
Dropping to a shell!

BusyBos v1.19.3 (Ubuntu 1:1.19.3-7ubuntu1) built-in shell (ash)
Enter 'help' for a list of built-in commands
(initramfs)

Looks like kernel 3.5.0-18 uses pata_jmicron kernel module for driving controller, but since kernel 3.6 (and later) pata_acpi module used instead, and it's fail to work with controller properly. Alan Cox thinks the problem is in distro kernel: https://bugzilla.kernel.org/show_bug.cgi?id=48631#c22

Bug report on Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=48631

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-18-generic 3.5.0-18.29
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: eugene 2262 F.... pulseaudio
 /dev/snd/controlC2: eugene 2262 F.... pulseaudio
 /dev/snd/controlC0: eugene 2262 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Fri Nov 30 00:17:39 2012
HibernationDevice: RESUME=UUID=bbb18b0e-b95b-4f14-8b8f-9b9400eb5665
InstallationDate: Installed on 2012-05-06 (207 days ago)
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MachineType: System manufacturer System Product Name
MarkForUpload: True
ProcEnviron:
 LANGUAGE=uk_UA
 TERM=xterm
 PATH=(custom, no user)
 LANG=uk_UA.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-18-generic root=UUID=8e6ab4ba-b981-4821-8683-9fa908a748e5 ro quiet splash
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-18-generic N/A
 linux-backports-modules-3.5.0-18-generic N/A
 linux-firmware 1.97
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-10-08 (52 days ago)
dmi.bios.date: 09/30/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1238
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5B-Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1238:bd09/30/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5B-Deluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer