R Robinson, the next step is to fully reverse commit bisect from kernel 3.13 to 4.6-rc6 in order to identify the last bad commit, followed immediately by the first good one. Once this good commit has been identified, it may be reviewed for backporting. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?
Please note, finding adjacent kernel versions is not fully commit bisecting. After the fix commit (not kernel version) has been identified, then please mark this report Status Confirmed. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: kernel-fixed-upstream-4.6-rc6 needs-reverse-bisect ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1574128 Title: Blank laptop screen Status in linux package in Ubuntu: Incomplete Bug description: Since the upgrade to 3.13.0-85-generic, my laptop screen is blank from when I would normally see the 'Kubuntu' logo at boot time onwards. An external monitor still works OK. I can see that the laptop backlight is on but the display is black. If I select 3.13.0-83-generic from the grub menu, everything works OK. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-85-generic 3.13.0-85.129 ProcVersionSignature: Ubuntu 3.13.0-85.129-generic 3.13.11-ckt36 Uname: Linux 3.13.0-85-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: tom 2370 F.... pulseaudio /dev/snd/controlC0: tom 2370 F.... pulseaudio CurrentDesktop: KDE Date: Sat Apr 23 23:16:23 2016 HibernationDevice: RESUME=UUID=ace2d751-8189-4d15-af74-400039ff0c8f InstallationDate: Installed on 2014-06-07 (686 days ago) InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1) MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3G ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-85-generic.efi.signed root=UUID=cc0b4c31-1aa1-4c9d-88af-97ca40f80655 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-85-generic N/A linux-backports-modules-3.13.0-85-generic N/A linux-firmware 1.127.22 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/31/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P07ADU.029.141031.PS dmi.board.asset.tag: No Asset Tag dmi.board.name: NP900X3G-K02FR dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SAMSUNG_SW_REVISION_1234567890ABCD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP07ADU.029.141031.PS:bd10/31/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3G:pvrP07ADU:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP900X3G-K02FR:rvrSAMSUNG_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: 900X3G dmi.product.version: P07ADU dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574128/+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
