Comment 0 for bug 903558

I've just upgraded my install of 11.10 x64 to 12.04 x64. Under 11.10 I needed the 'noapic' flag in the boot options, and everything worked fine. After the upgrade, my laptop refused to boot (stuck on blank screen) until I added the 'nomodeset' flag to the boot options along with the existing 'noapic'. The laptop now boots up, but the graphics are stuck at 1024x768, with no way of changing them.

This problem didn't exist in 11.10, so I'd say it's a regression?

My laptop is a new-ish (couple of months old) Lenovo Thinkpad L520, Intel Quad Core i7 Processor, 6 GB DDR3 SDRAM, 15.6″ HD+ (1600×900), and Intel HD Graphics 3000 processor graphics.

What can I do to help debug this issue?
I.e. outputs of files, and scripts to run, etc...

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-4-generic 3.2.0-4.10
ProcVersionSignature: Ubuntu 3.2.0-4.10-generic 3.2.0-rc5
Uname: Linux 3.2.0-4-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: valorin 2353 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf0900000 irq 47'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:10ec0269,17aa21de,00100100 HDA:80862805,80860101,00100000'
   Controls : 29
   Simple ctrls : 12
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 8GHT22WW-1.040000'
   Mixer name : 'ThinkPad EC 8GHT22WW-1.040000'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CheckboxSubmission: d98e517e10fca0c16089cb8e9d3fc2f7
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Tue Dec 13 16:42:16 2011
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=2853d6a5-ed73-4e23-ba37-9f1aa39c3b15
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: LENOVO 7859CTO
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-generic root=UUID=55f5d1a1-8ada-4f3e-8284-93be58c6d27d ro quiet splash noapic nomodeset vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-4-generic N/A
 linux-backports-modules-3.2.0-4-generic N/A
 linux-firmware 1.62
SourcePackage: linux
StagingDrivers: rts_pstor mei
UpgradeStatus: Upgraded to precise on 2011-12-13 (0 days ago)
dmi.bios.date: 06/07/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8GET33WW (1.10 )
dmi.board.name: 7859CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8GET33WW(1.10):bd06/07/2011:svnLENOVO:pn7859CTO:pvrThinkPadL520:rvnLENOVO:rn7859CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7859CTO
dmi.product.version: ThinkPad L520
dmi.sys.vendor: LENOVO