** Description changed: - 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. + Since Ubuntu 11.04 my Thinkpad L520 i7 has required the 'noapic' boot + flag to be set in order to boot successfully. When I first upgraded to + 12.04 on 2011-12-13 this flag was not required to boot into 12.04. But + an update sometime in January 2012 has caused a regression somewhere and + now the 'noapic' flag is again required. - I just tested with a live cd, and it now only needs the 'nomodeset' flag to be set to get it to work. - (Although this flag comes with the dodgy screen resolution, so it's not very usable...) + This is quite frustraiting and will mean any new users who don't know + anything about boot flags will be unable to install Ubuntu on their + laptops. - 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... + Also note, I also suffered from another bug which broke my primary laptop display on boot. But that has now been fixed in an upstream kernel: + https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/912992 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
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/903558 Title: Unable to boot 12.04 without 'noapic' flag enabled in GRUB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/903558/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
