Never mind. I realized I could stop the test.
Event: time 1601210227.644070, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 91100
Event: time 1601210227.644070, -------------- SYN_REPORT ------------
Event: time 1601210227.646075, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 93400
Event: time 1601210227.646075, -------------- SYN_REPORT ------------
Event: time 1601210227.648067, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 95700
Event: time 1601210227.648067, -------------- SYN_REPORT ------------
Event: time 1601210227.650059, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 98000
Event: time 1601210227.650059, -------------- SYN_REPORT ------------
Event: time 1601210227.652055, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 100300
Event: time 1601210227.652055, -------------- SYN_REPORT ------------
Event: time 1601210227.654050, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 102600
Event: time 1601210227.654050, -------------- SYN_REPORT ------------
Event: time 1601210227.656041, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 104900
Event: time 1601210227.656041, -------------- SYN_REPORT ------------
Event: time 1601210227.658034, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 107200
Event: time 1601210227.658034, -------------- SYN_REPORT ------------
Event: time 1601210227.660032, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 109500
Event: time 1601210227.660032, -------------- SYN_REPORT ------------
Event: time 1601210227.662038, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 111800
Event: time 1601210227.662038, -------------- SYN_REPORT ------------
Event: time 1601210227.664043, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 114100
Event: time 1601210227.664043, -------------- SYN_REPORT ------------
Event: time 1601210227.666152, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 116500
Event: time 1601210227.666152, -------------- SYN_REPORT ------------
Event: time 1601210227.668156, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 118700
Event: time 1601210227.668156, -------------- SYN_REPORT ------------
Event: time 1601210227.670112, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 121100
Event: time 1601210227.670112, -------------- SYN_REPORT ------------
Event: time 1601210227.672105, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 123400
Event: time 1601210227.672105, -------------- SYN_REPORT ------------
Event: time 1601210227.674112, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 125800
Event: time 1601210227.674112, -------------- SYN_REPORT ------------
Event: time 1601210227.676127, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 128000
Event: time 1601210227.676127, -------------- SYN_REPORT ------------
Event: time 1601210227.678121, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 130400
Event: time 1601210227.678121, -------------- SYN_REPORT ------------
Event: time 1601210227.680113, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 132700
Event: time 1601210227.680113, -------------- SYN_REPORT ------------
Event: time 1601210227.682109, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 135000
Event: time 1601210227.682109, -------------- SYN_REPORT ------------
Event: time 1601210227.684104, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 137300
Event: time 1601210227.684104, -------------- SYN_REPORT ------------
Event: time 1601210227.686097, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 139600
Event: time 1601210227.686097, -------------- SYN_REPORT ------------
Event: time 1601210227.688090, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 141900
Event: time 1601210227.688090, -------------- SYN_REPORT ------------
Event: time 1601210227.690084, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 144200
Event: time 1601210227.690084, -------------- SYN_REPORT ------------
Event: time 1601210227.692078, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 146500
Event: time 1601210227.692078, -------------- SYN_REPORT ------------
Event: time 1601210227.694085, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 148800
Event: time 1601210227.694085, -------------- SYN_REPORT ------------
Event: time 1601210227.696093, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 151100
Event: time 1601210227.696093, -------------- SYN_REPORT ------------
Event: time 1601210227.698110, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 153400
Event: time 1601210227.698110, -------------- SYN_REPORT ------------
Event: time 1601210227.700266, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 155700
Event: time 1601210227.700266, -------------- SYN_REPORT ------------
Event: time 1601210227.702230, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 158200
Event: time 1601210227.702230, -------------- SYN_REPORT ------------
Event: time 1601210227.704226, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 160500
Event: time 1601210227.704226, -------------- SYN_REPORT ------------
Event: time 1601210227.706226, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 162800
Event: time 1601210227.706226, -------------- SYN_REPORT ------------
Event: time 1601210227.708215, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 165100
Event: time 1601210227.708215, -------------- SYN_REPORT ------------
Event: time 1601210227.710209, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 167400
Event: time 1601210227.710209, -------------- SYN_REPORT ------------
Event: time 1601210227.712212, type 1 (EV_KEY), code 273 (BTN_RIGHT), value 0
Event: time 1601210227.712212, type 4 (EV_MSC), code 5 (MSC_TIMESTAMP), value 169700
Event: time 1601210227.712212, -------------- SYN_REPORT ------------
I clicked the left button and then the right button WITHOUT moving the cursor between clicking the buttons. It displated a line with the 272 left button code, but when I clicked the right button, it displayed MANY lines of report and even though I scrolled up quite a while, I couldn\t find the left button report.