I think I've found the bad commit that introduced this bug, dc487e5b0e9e401e9705dc4c62b9170711c68f77 thermal: step_wise: Revert optimization. I have extensively tested kernels 3.13.0-63 and 3.13.0-64 after this commit is reverted and they boot without issue and run without crashing. Reverting this will expose a bug in the acerhdf fan module preventing fan control on some old netbooks.
diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c index d89e781..769bfa3 100644 --- a/drivers/thermal/step_wise.c +++ b/drivers/thermal/step_wise.c @@ -140,9 +140,6 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) old_target = instance->target; instance->target = get_target_state(instance, trend, throttle); - if (old_target == instance->target) - continue; - /* Activate a passive thermal instance */ if (old_target == THERMAL_NO_TARGET && instance->target != THERMAL_NO_TARGET) I have attached the git bisect log. I am unable to update the BIOS at this time. Updating with the built in GSet BIOS Flash Updater fails with "Dell ID is not matched." and attempting to update under FreeDOS hangs the machine with no error message. ** Attachment added: "git-bisect.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1482273/+attachment/4464332/+files/git-bisect.log -- 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/1482273 Title: Dell Ubuntu 3551: failure to boot without nolapic option Status in linux package in Ubuntu: Incomplete Bug description: This laptop came with Ubuntu 14.04 preinstalled. It is a Dell Inspiron 3551 15" Ubuntu Laptop. A problem was introduced in the linux- image-3.13.0-58-generic kernel update which prevents the laptop from booting unless nolapic is added to the grub boot command. This problem persists in the current latest stable ubuntu kernel linux- image-3.13.0-61-generic. This bug affects a clean, factory restored install. The system passes all of Dell's included hardware diagnostic tests. Boot fails with: Kernel Panic - not syncing: Attempted to kill init! exitcode=0x00000009 The following kernels are able to boot without issue: linux-image-3.13.0-57-generic linux-image-3.13.0-55-generic linux-image-3.13.0-38-generic Please let me know if I can be of further assistance. lsb_release: Ubuntu 14.04.3 LTS Thanks, Mark Standridge ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-61-generic 3.13.0-61.100 ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22 Uname: Linux 3.13.0-61-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mark 2223 F.... pulseaudio CurrentDesktop: Unity Date: Thu Aug 6 10:24:22 2015 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-trusty-amd64-20140620-0 HibernationDevice: RESUME=UUID=00b41433-b7f7-4ddb-83c4-fca2ea939b57 InstallationDate: Installed on 2015-06-18 (48 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25 MachineType: Dell Inc. Inspiron 3551 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-61-generic root=UUID=a4f79951-02f5-41f5-aa89-e4f77082c51f ro nolapic quiet splash radeon.modeset=0 nouveau.modeset=0 video.use_native_backlight=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-61-generic N/A linux-backports-modules-3.13.0-61-generic N/A linux-firmware 1.127.14 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/05/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A00 dmi.board.name: 0CMF7W dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA00:bd12/05/2014:svnDellInc.:pnInspiron3551:pvrA00:rvnDellInc.:rn0CMF7W:rvrA00:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Inspiron 3551 dmi.product.version: A00 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1482273/+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