P, the next step is to fully reverse commit bisect from kernel 4.13 to 4.15-rc2 in order to identify the last bad kernel commit, followed immediately by the first good one. This will allow for a review of the fix commit to be included into Ubuntu. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully reverse commit bisecting. It is most helpful that after the fix commit (not kernel version) has been identified, this report is marked Status Confirmed. Thank you for your understanding. ** Tags added: regression-release -- 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/1736017 Title: trackpad looses sync and hangs -- 16.10 worked, 17.10 does not Status in linux package in Ubuntu: Incomplete Bug description: I run Ubuntu 17.10 (Kubuntu) on a Thinkpad Yoga260 notebook. The trackpad hangs regularly, typically after a few minutes of use. dmesg reports "lost sync bytes". Interestingly, this error already occurred in 16.04 (there are many reports about this, e.g. https://askubuntu.com/questions/922092/lifebook-e546-touchpad-on- ubuntu-16-04), but my notebook works fine with 16.10 which I used for about a year without any problems. Now that I updated it to 17.10 it occurs again. Both 16.10 and 17.10 are now installed in parallel, but the error only manifests when I boot into the latter. I have tried proto=imps and proto=bare (module psmouse), but this does not make a difference. I report this here because this might be some kind of regression (or coincidence). Output from dmesg: The trackpad detected es one from elantech: [ 1.952397] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x4d1f04) [ 1.967272] psmouse serio1: elantech: Synaptics capabilities query result 0x80, 0x14, 0x0c. [ 1.982603] psmouse serio1: elantech: Elan sample query result 04, 01, 85 [ 802.847308] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 802.854537] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 802.862926] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 802.870528] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 802.877890] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 802.877899] psmouse serio1: issuing reconnect request [ 805.772533] psmouse serio1: elantech: PS/2 packet [54 80 80 36 00 00] [ 1008.218685] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.226641] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.234590] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.242843] psmouse serio1: elantech: PS/2 packet [75 31 52 96 44 19] [ 1008.242851] psmouse serio1: Touchpad at isa0060/serio1/input0 - driver resynced. [ 1008.251339] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.258971] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.265958] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.273071] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.280932] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 [ 1008.280940] psmouse serio1: issuing reconnect request etc... --- ApportVersion: 2.20.7-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pascal 1282 F.... pulseaudio DistroRelease: Ubuntu 17.10 HibernationDevice: RESUME=UUID=cb84af7b-bfe3-432a-a69a-6a448b1f667a InstallationDate: Installed on 2017-12-01 (2 days ago) InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Release amd64 (20171017.1) MachineType: LENOVO 20FES2N100 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed root=UUID=c07aafe2-3841-467a-becb-e8173c55fac4 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.13.0-17-generic N/A linux-backports-modules-4.13.0-17-generic N/A linux-firmware 1.169 Tags: artful Uname: Linux 4.13.0-17-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 09/30/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1GET82W (1.61 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FES2N100 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1GET82W(1.61):bd09/30/2017:svnLENOVO:pn20FES2N100:pvrThinkPadYoga260:rvnLENOVO:rn20FES2N100:rvrNotDefined:cvnLENOVO:ct31:cvrNone: dmi.product.family: ThinkPad Yoga 260 dmi.product.name: 20FES2N100 dmi.product.version: ThinkPad Yoga 260 dmi.sys.vendor: LENOVO --- ApportVersion: 2.20.7-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pascal 1282 F.... pulseaudio DistroRelease: Ubuntu 17.10 HibernationDevice: RESUME=UUID=cb84af7b-bfe3-432a-a69a-6a448b1f667a InstallationDate: Installed on 2017-12-01 (2 days ago) InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Release amd64 (20171017.1) MachineType: LENOVO 20FES2N100 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed root=UUID=c07aafe2-3841-467a-becb-e8173c55fac4 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.13.0-17-generic N/A linux-backports-modules-4.13.0-17-generic N/A linux-firmware 1.169 Tags: artful Uname: Linux 4.13.0-17-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 09/30/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1GET82W (1.61 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FES2N100 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1GET82W(1.61):bd09/30/2017:svnLENOVO:pn20FES2N100:pvrThinkPadYoga260:rvnLENOVO:rn20FES2N100:rvrNotDefined:cvnLENOVO:ct31:cvrNone: dmi.product.family: ThinkPad Yoga 260 dmi.product.name: 20FES2N100 dmi.product.version: ThinkPad Yoga 260 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1736017/+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
