Comment 0 for bug 1072891

Hello,

There's a problem with ACPI subsystem in Linux kernel (3.5.0-18~ubuntu and 3.6.3 mainline). The machine fails to boot without additional kernel flags, that disable ACPI features.

Here's more detailed description of dependency between used kernel flags and boot process:
1. acpi=off - every boot succeeds, but laptop heats very fast (CPU fan also is very loud)
2. acpi=noirq - not every boot succeeds (approximately 2 from 8 are successful. starting from 3.5.0-10~ubuntu kernel and 3.6.0 mainline, on earlier kernels - every boot succeeds)
3. <no acpi flags> - can't boot at all

There's an article on Ubuntu Wiki saying that linux on Dell XPS 15z should be booted with acpi=noirq parameter:
https://wiki.ubuntu.com/HardwareSupport/Machines/Laptops/Dell/XPS/15z

Please see attached photos of screen with boot log when failed to boot.

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/controlC0: elvenfighter 1955 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
Date: Mon Oct 29 23:20:18 2012
HibernationDevice: RESUME=UUID=8fccd069-699f-41c0-9f34-7d61aa3a4530
InstallationDate: Installed on 2012-09-07 (52 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120905)
MachineType: Dell Inc. Dell System XPS 15Z
MarkForUpload: True
ProcEnviron:
 LANGUAGE=ru_UA:ru
 TERM=xterm
 PATH=(custom, no user)
 LANG=ru_UA.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-18-generic root=UUID=d6a2cdd3-8fd8-46c4-a9b3-209f751a68f5 ro crashkernel=384M-2G:64M,2G-:128M acpi=noirq quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-18-generic N/A
 linux-backports-modules-3.5.0-18-generic N/A
 linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/07/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd09/07/2012:svnDellInc.:pnDellSystemXPS15Z:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS 15Z
dmi.sys.vendor: Dell Inc.