I: Bus=0011 Vendor=0002 Product=0014 Version=0000 N: Name="BYDPS/2 BYD TouchPad" P: Phys=isa0060/serio1/input0 S: Sysfs=/devices/platform/i8042/serio1/input/input7 U: Uniq= H: Handlers=event11 mouse0 B: PROP=1 B: EV=b B: KEY=420 30000 0 0 0 0 B: ABS=3 This one is mounted on Purism Librem 13 laptop. Kernel log is continually filling up with the messages below, and sometimes the touchpad stops responding completely. [21424.723621] psmouse serio1: byd: Unrecognized Z: pkt = 08 a2 a8 d4 [21424.723626] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21424.733907] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 a2 d5 [21424.733911] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21424.740075] psmouse serio1: byd: Unrecognized Z: pkt = f8 18 ff 01 [21424.740079] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21424.741266] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [21424.741270] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [21424.746032] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [21515.596222] psmouse serio1: byd: Unrecognized Z: pkt = 08 aa c8 f0 [21515.596225] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.602420] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [21515.603574] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [21515.603577] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [21515.608341] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [21515.631289] psmouse serio1: byd: Unrecognized Z: pkt = 08 54 aa c9 [21515.631292] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.641578] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 aa c9 [21515.641581] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.651844] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 aa c9 [21515.651847] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.662157] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 aa c9 [21515.662166] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.672437] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 aa c9 [21515.672440] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [21515.672441] psmouse serio1: issuing reconnect request [22724.840572] psmouse serio1: byd: Unrecognized Z: pkt = 09 00 00 32 [22724.840575] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [22724.853311] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24084.354913] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 10 [24084.354916] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24084.361146] psmouse serio1: byd: Unrecognized Z: pkt = 08 a6 53 d5 [24084.361150] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24084.367292] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 08 01 [24084.367295] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24084.368482] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24084.368485] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24084.373261] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24086.330851] psmouse serio1: byd: Unrecognized Z: pkt = 08 ca 65 d9 [24086.330856] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24086.341125] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 66 d8 [24086.341128] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24086.347296] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24086.348470] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24086.348475] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24086.353244] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24086.397881] psmouse serio1: byd: Unrecognized Z: pkt = 08 6b da f0 [24086.397884] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24086.404053] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24086.405236] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24086.405239] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24086.410010] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24087.325287] psmouse serio1: byd: Unrecognized Z: pkt = 08 e0 70 d0 [24087.325290] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24087.335573] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 70 d0 [24087.335576] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24087.345859] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 70 d0 [24087.345863] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24087.356151] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 70 d0 [24087.356155] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24087.366438] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 70 d0 [24087.366442] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24087.366443] psmouse serio1: issuing reconnect request [24200.206440] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 10 [24200.206444] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24200.211211] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24200.489127] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24200.489130] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24200.490318] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24200.490322] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24200.495038] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24200.524296] psmouse serio1: byd: Unrecognized Z: pkt = 38 fc fe ff [24200.524300] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24200.525486] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24200.525489] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24200.530186] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24207.907831] psmouse serio1: byd: Unrecognized Z: pkt = 08 9c cb f0 [24207.907835] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.918119] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 9c cb [24207.918123] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.924288] psmouse serio1: byd: Unrecognized Z: pkt = f8 28 00 ff [24207.924291] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.925477] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24207.925481] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24207.930205] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [24207.942695] psmouse serio1: byd: Unrecognized Z: pkt = 08 38 9c cb [24207.942698] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.952981] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 9c cb [24207.952985] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.963224] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 9c cb [24207.963227] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.969466] psmouse serio1: byd: Unrecognized Z: pkt = f8 28 00 ff [24207.969469] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24207.971600] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [24207.971604] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [24207.971605] psmouse serio1: issuing reconnect request [24882.266326] psmouse serio1: byd: Unrecognized Z: pkt = 08 64 64 32 [24882.266330] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24882.276667] psmouse serio1: byd: Unrecognized Z: pkt = c9 f8 08 32 [24882.276670] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24882.286958] psmouse serio1: byd: Unrecognized Z: pkt = c9 f8 08 32 [24882.286962] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24882.297221] psmouse serio1: byd: Unrecognized Z: pkt = c9 f8 08 32 [24882.297225] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24882.307487] psmouse serio1: byd: Unrecognized Z: pkt = c9 f8 08 32 [24882.307490] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [24882.307492] psmouse serio1: issuing reconnect request [27308.274322] psmouse serio1: byd: Unrecognized Z: pkt = 09 00 00 32 [27308.274326] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [27308.280779] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [32661.705560] psmouse serio1: byd: Unrecognized Z: pkt = 09 00 00 32 [32661.705563] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [32661.843872] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [34854.654578] psmouse serio1: byd: Unrecognized Z: pkt = 08 fb 9e fe [34854.654581] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [34855.462420] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [35967.006294] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [35967.006297] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [35967.011057] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [36795.863878] psmouse serio1: byd: Unrecognized Z: pkt = 08 27 d0 f0 [36795.863884] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36795.874184] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 27 d0 [36795.874187] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36795.880401] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 00 01 [36795.880414] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36795.881596] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [36795.881615] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [36795.886356] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced. [36796.606471] psmouse serio1: byd: Unrecognized Z: pkt = 08 42 80 c0 [36796.606474] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36796.616759] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 44 c3 [36796.616763] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36796.627058] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 4b c7 [36796.627063] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36796.633247] psmouse serio1: byd: Unrecognized Z: pkt = f8 08 0f 06 [36796.633250] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4 [36796.634455] psmouse serio1: byd: Always_1 bit not 1. pkt[0] = 00 [36796.634458] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1 [36796.634459] psmouse serio1: issuing reconnect request
Could you check >= 4.9 kernel? This issue was mentioned in e9fb7cc63801d3dc71b60ca11c4d08f68f879a53.