** Description changed:

- did this report using ubuntu-bug. i'm ready to give further information
- upon request.
+ Kernels after 2.6.32-33 through 2.6.38-10 run on this machine only when 
acpi=off boot option is specified.
+ When I remove the acpi=off boot option, the boot hangs after the following 
messages:
+ 
+ Booting a command list
+ Loading, please wait...
+ Begin: Loading essential drivers ... done.
+ Begin: Loading /scripts/init-premount... done.
+ Begin: Mounting root file system ... Begin: Running /scripts/local-top ... 
done.
+ 
+ The remaining text of this description was generated using ubuntu-bug
+ after starting with acpi=off.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-10-generic 2.6.38-10.46
  ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic i686
  AcpiTables:
-  
+ 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  AplayDevices: aplay: device_list:240: no soundcards found...
  Architecture: i386
  ArecordDevices: arecord: device_list:240: no soundcards found...
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', 
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', 
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', 
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Date: Thu Aug  4 22:14:20 2011
  HibernationDevice: RESUME=UUID=dc90b49c-0ea2-469c-a383-5d3904014d5f
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  MachineType: Hewlett-Packard Presario CQ61 Notebook PC
  ProcEnviron:
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic 
root=UUID=2aa602b2-9cab-4686-9f9e-37437e63b55f ro acpi=off splash vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-2.6.38-10-generic N/A
-  linux-backports-modules-2.6.38-10-generic  N/A
-  linux-firmware                             1.52
+  linux-restricted-modules-2.6.38-10-generic N/A
+  linux-backports-modules-2.6.38-10-generic  N/A
+  linux-firmware                             1.52
  RfKill:
-  0: phy0: Wireless LAN
-       Soft blocked: no
-       Hard blocked: yes
+  0: phy0: Wireless LAN
+   Soft blocked: no
+   Hard blocked: yes
  SourcePackage: linux
  UpgradeStatus: Upgraded to natty on 2011-07-30 (4 days ago)
  dmi.bios.date: 10/10/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.07
  dmi.board.name: 363F
  dmi.board.vendor: Quanta
  dmi.board.version: 42.14
  dmi.chassis.type: 10
  dmi.chassis.vendor: Quanta
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.07:bd10/10/2009:svnHewlett-Packard:pnPresarioCQ61NotebookPC:pvr0396100000010D10000000000:rvnQuanta:rn363F:rvr42.14:cvnQuanta:ct10:cvrN/A:
  dmi.product.name: Presario CQ61 Notebook PC
  dmi.product.version: 0396100000010D10000000000
  dmi.sys.vendor: Hewlett-Packard

** Summary changed:

- acpi causes freezing on Compaq Presario CQ61 laptop
+ acpi causes boot failure on Compaq Presario CQ61 laptop

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https://bugs.launchpad.net/bugs/821087

Title:
  acpi causes boot failure on Compaq Presario CQ61 laptop

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