Anthony Buckley, the next step is to fully commit bisect from kernel 3.16 to 3.19 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: regression-release ** Attachment removed: "WifiSyslog.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439444/+files/WifiSyslog.txt ** Attachment removed: "UdevLog.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439443/+files/UdevLog.txt ** Attachment removed: "UdevDb.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439442/+files/UdevDb.txt ** Attachment removed: "PulseList.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439441/+files/PulseList.txt ** Attachment removed: "ProcModules.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439440/+files/ProcModules.txt ** Attachment removed: "ProcInterrupts.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439439/+files/ProcInterrupts.txt ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439438/+files/ProcEnviron.txt ** Attachment removed: "ProcCpuinfo.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439437/+files/ProcCpuinfo.txt ** Attachment removed: "Lsusb.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439436/+files/Lsusb.txt ** Attachment removed: "Lspci.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439435/+files/Lspci.txt ** Attachment removed: "JournalErrors.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439434/+files/JournalErrors.txt ** Attachment removed: "CurrentDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439433/+files/CurrentDmesg.txt ** Attachment removed: "CRDA.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439432/+files/CRDA.txt ** Attachment removed: "AlsaInfo.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1480642/+attachment/4439431/+files/AlsaInfo.txt ** Description changed: - Following advice as per Release Notes - (https://wiki.ubuntu.com/VividVervet/ReleaseNotes) + Just upgraded from 14.10 to 15.04 and now Ubuntu fails to start from powering up. I select 'ubuntu' on the grub loader screen and then get a blank screen. Computer just hangs. Have tried Ctrl+Alt+1 etc., and also leaving for several minutes but nothing happens. + Once I power down manually and restart and try again I see a message: + 'ACPI PCC Probe failed, starting version 219' and PC boots OK. - Just upgraded from 14.10 to 15.04 and now Ubuntu fails to start from powering up. I select 'ubuntu' on the grub loader screen and then get a blank screen. Computer just hangs. Have tried Ctrl + Alt + 1 etc, and also leaving for several minutes but nothing happens. - Once I power down manually and restart and try again I see a message 'ACPI PCC Probe failed, starting version 219' and PC boots OK. - - This has repeated each time from scratch. - - FYI - lsb_release -rd - RegardsDescription: Ubuntu 15.04 - Release: 15.04 - --- + --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: tony 1694 F.... pulseaudio - /dev/snd/controlC1: tony 1694 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: tony 1694 F.... pulseaudio + /dev/snd/controlC1: tony 1694 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=ecd554d6-6ffc-440b-b184-bfa1268799bf InstallationDate: Installed on 2014-08-23 (346 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) IwConfig: - eth0 no wireless extensions. - - lo no wireless extensions. + eth0 no wireless extensions. + + lo no wireless extensions. MachineType: Dell Inc. Studio XPS 435MT Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=ef670394-9aa8-4c94-8054-cd701afb0a66 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2 RelatedPackageVersions: - linux-restricted-modules-3.19.0-25-generic N/A - linux-backports-modules-3.19.0-25-generic N/A - linux-firmware 1.143.2 + linux-restricted-modules-3.19.0-25-generic N/A + linux-backports-modules-3.19.0-25-generic N/A + linux-firmware 1.143.2 RfKill: - 0: hci0: Bluetooth - Soft blocked: no - Hard blocked: no + 0: hci0: Bluetooth + Soft blocked: no + Hard blocked: no Tags: vivid Uname: Linux 3.19.0-25-generic x86_64 UpgradeStatus: Upgraded to vivid on 2015-07-22 (13 days ago) UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/19/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.8 dmi.board.name: 0R849J dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.0.8:bd01/19/2009:svnDellInc.:pnStudioXPS435MT:pvr:rvnDellInc.:rn0R849J:rvrA00:cvnDellInc.:ct3:cvr: dmi.product.name: Studio XPS 435MT dmi.sys.vendor: Dell Inc. - --- - ApportVersion: 2.17.2-0ubuntu1.1 - Architecture: amd64 - AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: tony 1694 F.... pulseaudio - /dev/snd/controlC1: tony 1694 F.... pulseaudio - CurrentDesktop: Unity - DistroRelease: Ubuntu 15.04 - HibernationDevice: RESUME=UUID=ecd554d6-6ffc-440b-b184-bfa1268799bf - InstallationDate: Installed on 2014-08-23 (346 days ago) - InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) - IwConfig: - eth0 no wireless extensions. - - lo no wireless extensions. - MachineType: Dell Inc. Studio XPS 435MT - Package: linux (not installed) - ProcFB: 0 radeondrmfb - ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=ef670394-9aa8-4c94-8054-cd701afb0a66 ro quiet splash - ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2 - RelatedPackageVersions: - linux-restricted-modules-3.19.0-25-generic N/A - linux-backports-modules-3.19.0-25-generic N/A - linux-firmware 1.143.2 - RfKill: - 0: hci0: Bluetooth - Soft blocked: no - Hard blocked: no - Tags: vivid - Uname: Linux 3.19.0-25-generic x86_64 - UpgradeStatus: Upgraded to vivid on 2015-07-22 (13 days ago) - UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo - _MarkForUpload: True - dmi.bios.date: 01/19/2009 - dmi.bios.vendor: Dell Inc. - dmi.bios.version: 1.0.8 - dmi.board.name: 0R849J - dmi.board.vendor: Dell Inc. - dmi.board.version: A00 - dmi.chassis.type: 3 - dmi.chassis.vendor: Dell Inc. - dmi.modalias: dmi:bvnDellInc.:bvr1.0.8:bd01/19/2009:svnDellInc.:pnStudioXPS435MT:pvr:rvnDellInc.:rn0R849J:rvrA00:cvnDellInc.:ct3:cvr: - dmi.product.name: Studio XPS 435MT - dmi.sys.vendor: Dell Inc. ** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-4.3-rc6 ** Tags added: needs-bisect -- 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/1480642 Title: systemd-boot Status in linux package in Ubuntu: Incomplete Bug description: Just upgraded from 14.10 to 15.04 and now Ubuntu fails to start from powering up. I select 'ubuntu' on the grub loader screen and then get a blank screen. Computer just hangs. Have tried Ctrl+Alt+1 etc., and also leaving for several minutes but nothing happens. Once I power down manually and restart and try again I see a message: 'ACPI PCC Probe failed, starting version 219' and PC boots OK. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tony 1694 F.... pulseaudio /dev/snd/controlC1: tony 1694 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=ecd554d6-6ffc-440b-b184-bfa1268799bf InstallationDate: Installed on 2014-08-23 (346 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Dell Inc. Studio XPS 435MT Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=ef670394-9aa8-4c94-8054-cd701afb0a66 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2 RelatedPackageVersions: linux-restricted-modules-3.19.0-25-generic N/A linux-backports-modules-3.19.0-25-generic N/A linux-firmware 1.143.2 RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no Tags: vivid Uname: Linux 3.19.0-25-generic x86_64 UpgradeStatus: Upgraded to vivid on 2015-07-22 (13 days ago) UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/19/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.8 dmi.board.name: 0R849J dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.0.8:bd01/19/2009:svnDellInc.:pnStudioXPS435MT:pvr:rvnDellInc.:rn0R849J:rvrA00:cvnDellInc.:ct3:cvr: dmi.product.name: Studio XPS 435MT dmi.sys.vendor: Dell Inc. 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