Public bug reported:

This is a regression. The previous kernel image (3.5.0-18-generic) works
fine (except for USB, see Bug #1079073 ).

Symptoms: 
If I choose the standard boot option from my point of view the system freezes. 
The screen still displays the Grub window and I can reboot the system with 
Ctrl-alt-del.
If I choose the recovery mode boot option the screen displays distorted (and 
thus unreadable) text. I can use the sysrq keys to reboot the system, but 
apparently the kernel is broken enough to not even be able to write something 
to /var/log/kern.log (I booted the system at about Dec  3 09:30:30 which you 
probably won't see in the logs) .

I'd be happy to do further diagnostics if you could direct me how to do
them.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-19-generic 3.5.0-19.30
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:  jakob      2110 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not 
found.
Date: Mon Dec  3 09:36:36 2012
HibernationDevice: RESUME=UUID=6bc49cc9-fe98-4eec-a2ac-9c919a9ad172
InstallationDate: Installed on 2012-11-14 (18 days ago)
InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Release 
amd64(20121023)
IwConfig:
 eth0      no wireless extensions.
 
 lo        no wireless extensions.
MachineType: Hewlett-Packard HP ProBook 4540s
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=screen-bce
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-18-generic.efi.signed 
root=/dev/mapper/gnome-root 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                            1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/31/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68IRR Ver. F.31
dmi.board.name: 17F6
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 58.1D
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68IRRVer.F.31:bd08/31/2012:svnHewlett-Packard:pnHPProBook4540s:pvrA1019D1103:rvnHewlett-Packard:rn17F6:rvrKBCVersion58.1D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4540s
dmi.product.version: A1019D1103
dmi.sys.vendor: Hewlett-Packard

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug quantal

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https://bugs.launchpad.net/bugs/1085830

Title:
  Kernel does not boot on HP ProBook 4540s (with UEFI)

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