phablet@ubuntu-phablet:~$ sudo udevadm info /dev/input/event5 P: /devices/virtual/input/input15/event5 N: input/event5 L: 0 E: DEVPATH=/devices/virtual/input/input15/event5 E: DEVNAME=/dev/input/event5 E: MAJOR=13 E: MINOR=69 E: SUBSYSTEM=input E: USEC_INITIALIZED=780864210 E: ID_INPUT=1 E: ID_SERIAL=noserial E: ID_INPUT_TOUCHSCREEN=1 phablet@ubuntu-phablet:~$ sudo libinput debug-events event5 - MirVNCServer Virtual Touchscreen: libinput bug: Internal or external? Please file a bug. -event1 DEVICE_ADDED mtk-kpd seat0 default group1 cap:k -event0 DEVICE_ADDED mtk-pmic-keys seat0 default group2 cap:k -event3 DEVICE_ADDED mt6789-mt6366 Headset Jack seat0 default group3 cap:k -event5 DEVICE_ADDED MirVNCServer Virtual Touchscreen seat0 default group4 cap:pg size 72x156mm tap(dl off) left scroll-nat scroll-2fg-edge -event6 DEVICE_ADDED MirVNCServer Virtual Keyboard seat0 default group5 cap:kp left scroll-nat -event2 DEVICE_ADDED mtk-tpd seat0 default group6 cap:t ntouches 10 calib -event4 DEVICE_ADDED ff_key seat0 default group7 cap:k -event5 POINTER_BUTTON +0.000s BTN_LEFT (272) pressed, seat count: 1 event5 POINTER_BUTTON +0.102s BTN_LEFT (272) released, seat count: 0 event5 - MirVNCServer Virtual Touchscreen: kernel bug: Touch jump detected and discarded. See https://wayland.freedesktop.org/libinput/doc/1.15.5/touchpad-jumping-cursors.html for details event5 - MirVNCServer Virtual Touchscreen: kernel bug: Touch jump detected and discarded. See https://wayland.freedesktop.org/libinput/doc/1.15.5/touchpad-jumping-cursors.html for details event5 POINTER_MOTION +11.624s 3.74/ 5.61 ( +4.00/ +6.00) event5 POINTER_MOTION +11.640s 4.21/ 8.42 ( +4.00/ +8.00) event5 - MirVNCServer Virtual Touchscreen: kernel bug: Touch jump detected and discarded. See https://wayland.freedesktop.org/libinput/doc/1.15.5/touchpad-jumping-cursors.html for details event5 - MirVNCServer Virtual Touchscreen: kernel bug: Touch jump detected and discarded. See https://wayland.freedesktop.org/libinput/doc/1.15.5/touchpad-jumping-cursors.html for details event5 POINTER_MOTION +11.673s 4.21/ 6.32 ( +4.00/ +6.00) event5 - MirVNCServer Virtual Touchscreen: kernel bug: Touch jump detected and discarded. See https://wayland.freedesktop.org/libinput/doc/1.15.5/touchpad-jumping-cursors.html for details event5 - MirVNCServer Virtual Touchscreen: WARNING: log rate limit exceeded (5 msgs per 7200000ms). Discarding future messages. event5 POINTER_MOTION +11.708s 4.21/ 6.32 ( +4.00/ +6.00) event5 POINTER_MOTION +11.722s 4.21/ 6.32 ( +4.00/ +6.00) event5 POINTER_MOTION +11.775s 8.42/ 12.63 ( +8.00/+12.00) event5 POINTER_MOTION +11.808s 2.11/ 2.11 ( +2.00/ +2.00) ^C phablet@ubuntu-phablet:~$ sudo evtest /dev/input/event5 Input driver version is 1.0.1 Input device ID: bus 0x3 vendor 0x1 product 0x1 version 0x1 Input device name: "MirVNCServer Virtual Touchscreen" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 325 (BTN_TOOL_FINGER) Event code 330 (BTN_TOUCH) Event type 3 (EV_ABS) Event code 47 (ABS_MT_SLOT) Value 0 Min 0 Max 9 Event code 53 (ABS_MT_POSITION_X) Value 0 Min 0 Max 720 Resolution 10 Event code 54 (ABS_MT_POSITION_Y) Value 0 Min 0 Max 1560 Resolution 10 Event code 57 (ABS_MT_TRACKING_ID) Value 0 Min 0 Max 65535 Properties: Testing ... (interrupt to exit) Event: time 1695303400.556042, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 10 Event: time 1695303400.556042, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1 Event: time 1695303400.556042, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1 Event: time 1695303400.556042, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 2 Event: time 1695303400.556042, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 4 Event: time 1695303400.556042, -------------- SYN_REPORT ------------ Event: time 1695303400.910437, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1 Event: time 1695303400.910437, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0 Event: time 1695303400.910437, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0 Event: time 1695303400.910437, -------------- SYN_REPORT ------------ Event: time 1695303404.568440, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 10 Event: time 1695303404.568440, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1 Event: time 1695303404.568440, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1 Event: time 1695303404.568440, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 714 Event: time 1695303404.568440, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 1552 Event: time 1695303404.568440, -------------- SYN_REPORT ------------ Event: time 1695303404.681568, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1 Event: time 1695303404.681568, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0 Event: time 1695303404.681568, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0 Event: time 1695303404.681568, -------------- SYN_REPORT ------------ Event: time 1695303409.047155, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 10 Event: time 1695303409.047155, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1 Event: time 1695303409.047155, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1 Event: time 1695303409.047155, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 250 Event: time 1695303409.047155, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 538 Event: time 1695303409.047155, -------------- SYN_REPORT ------------ Event: time 1695303409.081809, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 252 Event: time 1695303409.081809, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 546 Event: time 1695303409.081809, -------------- SYN_REPORT ------------ Event: time 1695303409.093690, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 556 Event: time 1695303409.093690, -------------- SYN_REPORT ------------ Event: time 1695303409.131931, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 258 Event: time 1695303409.131931, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 592 Event: time 1695303409.131931, -------------- SYN_REPORT ------------ Event: time 1695303409.149498, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 262 Event: time 1695303409.149498, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 610 Event: time 1695303409.149498, -------------- SYN_REPORT ------------ Event: time 1695303409.163297, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 266 Event: time 1695303409.163297, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 626 Event: time 1695303409.163297, -------------- SYN_REPORT ------------ Event: time 1695303409.182294, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 270 Event: time 1695303409.182294, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 644 Event: time 1695303409.182294, -------------- SYN_REPORT ------------ Event: time 1695303409.193517, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 272 Event: time 1695303409.193517, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 652 Event: time 1695303409.193517, -------------- SYN_REPORT ------------ Event: time 1695303409.217188, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 274 Event: time 1695303409.217188, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 656 Event: time 1695303409.217188, -------------- SYN_REPORT ------------ Event: time 1695303409.262727, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1 Event: time 1695303409.262727, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0 Event: time 1695303409.262727, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0 Event: time 1695303409.262727, -------------- SYN_REPORT ------------