Matteo Dell'Amico, the next step is to fully reverse commit bisect from kernel 4.2 to 4.3 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. 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. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: bios-outdated-1.71 ** Tags added: regression-release vivid ** Tags added: needs-reverse-bisect ** Changed in: linux (Ubuntu) Status: Confirmed =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/1512482 Title: Keyboard and touchpad malfunctioning on Thinkpad Twist Status in linux package in Ubuntu: Incomplete Bug description: I don't know if this is really a kernel bug or if it's any other component, please help me know how I can diagnose the problem better. This is a bug I have been experiencing with both 15.04 and 15.10, while this was not a problem with earlier distributions -- unfortunately, I don't remember which one in particular was actually working. I have a Thinkpad Twist -- a hybrid laptop with touchscreen. The touchpad almost never works (even though sometimes, erratically, it does). The keyboard sometimes stops working, and works again after a suspend/resume cycle. Sometimes it behaves as if a key is stuck. When running xinput --list, I don't see the touchpad. The touchscreen and external input devices connected via USB, however, work fine. I was thinking this was a hardware problem, but on the same machine with Windows the problem does not appear to present itself. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-17-generic 4.2.0-17.21 ProcVersionSignature: Ubuntu 4.2.0-17.21-generic 4.2.3 Uname: Linux 4.2.0-17-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: della 1684 F.... pulseaudio CurrentDesktop: Unity Date: Mon Nov 2 21:39:42 2015 HibernationDevice: RESUME=UUID=38d3eec5-87ea-4477-bd19-d975ac2fca22 InstallationDate: Installed on 2013-10-05 (758 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130925.1) MachineType: LENOVO 33474HU ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-17-generic root=UUID=907c2dfa-5b96-4857-a1e7-6b59406e9721 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-17-generic N/A linux-backports-modules-4.2.0-17-generic N/A linux-firmware 1.149.1 SourcePackage: linux UpgradeStatus: Upgraded to wily on 2015-11-01 (0 days ago) dmi.bios.date: 12/15/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GDETA9WW (1.69 ) dmi.board.asset.tag: Not Available dmi.board.name: 33474HU dmi.board.vendor: LENOVO dmi.board.version: Win8 STD DPK TPG dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGDETA9WW(1.69):bd12/15/2014:svnLENOVO:pn33474HU:pvrThinkPadTwist:rvnLENOVO:rn33474HU:rvrWin8STDDPKTPG:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 33474HU dmi.product.version: ThinkPad Twist dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1512482/+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
