Public bug reported: 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... ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: artful kernel psmouse -- 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... 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
