Can you test the following upstream kernels to see if this regression came in with an upstream stable update:
Should not have the bug: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.69-precise/ May have the bug: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.71-precise/ ** Changed in: linux (Ubuntu) Importance: Low => High ** Tags added: needs-bisect ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1527621 Title: kernels 3.2.0-91 through at least 3.2.0-96 fail to boot Status in linux package in Ubuntu: Confirmed Bug description: System POSTs normally. After grub menu screen, any version higher than 3.2.0-90 hangs on dark red screen. ESC will not show the boot process. This report was gathered using 3.2.0-90, which is the last version that works correctly. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-90-generic 3.2.0-90.128 ProcVersionSignature: Ubuntu 3.2.0-90.128-generic 3.2.69 Uname: Linux 3.2.0-90-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: I82801BAICH2 [Intel 82801BA-ICH2], device 0: Intel ICH [Intel 82801BA-ICH2] Subdevices: 1/1 Subdevice #0: subdevice #0 ApportVersion: 2.0.1-0ubuntu17.13 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cnix 847 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Card0.Amixer.info: Card hw:0 'I82801BAICH2'/'Intel 82801BA-ICH2 with ALC650D at irq 17' Mixer name : 'Realtek ALC650D' Components : 'AC97a:414c4721' Controls : 50 Simple ctrls : 33 Date: Fri Dec 18 09:15:32 2015 HibernationDevice: RESUME=UUID=2579dd5a-324e-4b20-a97a-5f29956197a1 InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: System Manufacturer System Name MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-90-generic root=UUID=17299dfb-70b4-4854-808b-0b1e23d565c9 ro RelatedPackageVersions: linux-restricted-modules-3.2.0-90-generic N/A linux-backports-modules-3.2.0-90-generic N/A linux-firmware 1.79.18 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to precise on 2014-09-10 (463 days ago) WifiSyslog: Dec 18 09:15:50 harp kernel: [67160.491633] codec_semaphore: semaphore is not ready [0x1][0x300100] Dec 18 09:15:50 harp kernel: [67160.491684] codec_read 0: semaphore is not ready for register 0x56 dmi.bios.date: 12/25/2002 dmi.bios.vendor: Award Software, Inc. dmi.bios.version: ASUS P4T533-C ACPI BIOS Revision 1009 dmi.board.name: P4T533-C dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: REV 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 6 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAwardSoftware,Inc.:bvrASUSP4T533-CACPIBIOSRevision1009:bd12/25/2002:svnSystemManufacturer:pnSystemName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP4T533-C:rvrREV1.xx:cvnChassisManufacture:ct6:cvrChassisVersion: dmi.product.name: System Name dmi.product.version: System Version dmi.sys.vendor: System Manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527621/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp