** Summary changed: - Kernel 4.4.0-93 - Suddenly freezing on boot. + Kernel 4.4.0-93 Freezes on boot:splash/vt.handoff edit works;but debug fails
** Description changed: Ubuntu 16.04: has been working fine for a year and a half, now suddenly freezing on bootup, with a permanent spinning logo. The problem appears with the new (4.4.0-93) kernel. (Things were fine in 4.4.0-92.) My system has /boot on a USB and root on LUKS (along with a 2nd data disk on LUKS). I can boot via a text console if I remove the "splash" kernel switch and - changed $vt.handoff to "$vt.handoff=7". Unfortunately, adding the - "debug" switch causes a freeze, though "debug=vc" boots. Also, for any - of the settings that cause a freeze, if I add "break=mountroot", I can - mount the LUKS disks by hand and continue with boot. + changed $vt.handoff to "$vt.handoff=7". Even with these changes, adding + the "debug" switch causes a freeze, though "debug=vc" boots. Also, for + any of the settings that cause a freeze, if I add "break=mountroot", I + can mount the LUKS disks by hand and continue with boot. Note (below): booting in recovery allows me to unlock the disks. Then choosing to continue with normal boot, leads to a blank grey screen. It appears frozen, but there is continuing disk activity for some long time. --- ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dev 2272 F.... pulseaudio /dev/snd/controlC1: dev 2272 F.... pulseaudio /dev/snd/controlC0: dev 2272 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2016-05-31 (475 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421) MachineType: LENOVO 23591L9 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/@t530boot/vmlinuz-4.4.0-93-generic root=/username/mapper/luks.root ro rootflags=subvol=@ quiet vt.handoff=7=7 ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79 RelatedPackageVersions: linux-restricted-modules-4.4.0-93-generic N/A linux-backports-modules-4.4.0-93-generic N/A linux-firmware 1.157.12 Tags: xenial Uname: Linux 4.4.0-93-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/10/2015 dmi.bios.vendor: LENOVO dmi.bios.version: G4ETA5WW (2.65 ) dmi.board.asset.tag: Not Available dmi.board.name: 23591L9 dmi.board.vendor: LENOVO dmi.board.version: 0B98413 Std dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG4ETA5WW(2.65):bd09/10/2015:svnLENOVO:pn23591L9:pvrThinkPadT530:rvnLENOVO:rn23591L9:rvr0B98413Std:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 23591L9 dmi.product.version: ThinkPad T530 dmi.sys.vendor: LENOVO -- 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/1718047 Title: Kernel 4.4.0-93 Freezes on boot:splash/vt.handoff edit works;but debug fails Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 16.04: has been working fine for a year and a half, now suddenly freezing on bootup, with a permanent spinning logo. The problem appears with the new (4.4.0-93) kernel. (Things were fine in 4.4.0-92.) My system has /boot on a USB and root on LUKS (along with a 2nd data disk on LUKS). I can boot via a text console if I remove the "splash" kernel switch and changed $vt.handoff to "$vt.handoff=7". Even with these changes, adding the "debug" switch causes a freeze, though "debug=vc" boots. Also, for any of the settings that cause a freeze, if I add "break=mountroot", I can mount the LUKS disks by hand and continue with boot. Note (below): booting in recovery allows me to unlock the disks. Then choosing to continue with normal boot, leads to a blank grey screen. It appears frozen, but there is continuing disk activity for some long time. --- ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dev 2272 F.... pulseaudio /dev/snd/controlC1: dev 2272 F.... pulseaudio /dev/snd/controlC0: dev 2272 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2016-05-31 (475 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421) MachineType: LENOVO 23591L9 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/@t530boot/vmlinuz-4.4.0-93-generic root=/username/mapper/luks.root ro rootflags=subvol=@ quiet vt.handoff=7=7 ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79 RelatedPackageVersions: linux-restricted-modules-4.4.0-93-generic N/A linux-backports-modules-4.4.0-93-generic N/A linux-firmware 1.157.12 Tags: xenial Uname: Linux 4.4.0-93-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/10/2015 dmi.bios.vendor: LENOVO dmi.bios.version: G4ETA5WW (2.65 ) dmi.board.asset.tag: Not Available dmi.board.name: 23591L9 dmi.board.vendor: LENOVO dmi.board.version: 0B98413 Std dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG4ETA5WW(2.65):bd09/10/2015:svnLENOVO:pn23591L9:pvrThinkPadT530:rvnLENOVO:rn23591L9:rvr0B98413Std:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 23591L9 dmi.product.version: ThinkPad T530 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718047/+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
