我有一台 2009 年的一体式 MacBook，运行的是 xubuntu 18.04。鼠标时不时会卡住大约半秒钟。我认为一切都卡住了，但我不知道。现在这只不过是让人恼火，但它正在破坏体验。
我应该寻找什么以及如何寻找？
CPU~双核 Intel Core2 Duo P7550 (-MCP-) 速度/最大~1419/2261 MHz 内核~5.0.0-37-generic x86_64 最高~57 分钟 内存~2582.1/5701.0MB HDD~240.1GB（使用率为 9.9%）
编辑：这似乎只发生在任一 USB 端口上的 USB 鼠标上 - 而不是蓝牙鼠标。
编辑以添加来自系统日志的详细信息：
Jan 19 12:25:28 david-FrankenBook rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="725" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
Jan 19 12:25:31 david-FrankenBook kernel: [ 344.615346] usb usb4-port2: disabled by hub (EMI?), re-enabling...
Jan 19 12:25:31 david-FrankenBook kernel: [ 344.615357] usb 4-2: USB disconnect, device number 12
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0/0003:093A:2510.000B
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2
Jan 19 12:25:31 david-FrankenBook kernel: [ 344.985672] usb 4-2: new low-speed USB device number 13 using ohci-pci
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.220299] usb 4-2: New USB device found, idVendor=093a, idProduct=2510, bcdDevice= 1.00
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.220303] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.220306] usb 4-2: Product: USB Optical Mouse
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.220308] usb 4-2: Manufacturer: PixArt
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.231056] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0/0003:093A:2510.000C$
Jan 19 12:25:31 david-FrankenBook kernel: [ 345.231426] hid-generic 0003:093A:2510.000C: input,hidraw2: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-00$
Jan 19 12:25:31 david-FrankenBook mtp-probe: checking bus 4, device 13: "/sys/devices/pci0000:00/0000:00:06.0/usb4/4-2"
Jan 19 12:25:31 david-FrankenBook mtp-probe: bus: 4, device: 13 was not an MTP device
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0/0003:093A:2510.000C
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0
Jan 19 12:25:31 david-FrankenBook upowerd[1134]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2
Jan 19 12:25:54 david-FrankenBook rtkit-daemon[1242]: Supervising 4 threads of 2 processes of 1 users.
Jan 19 12:25:54 david-FrankenBook rtkit-daemon[1242]: Supervising 4 threads of 2 processes of 1 users.
Jan 19 12:25:55 david-FrankenBook anacron[691]: Job `cron.daily' terminated
Jan 19 12:26:11 david-FrankenBook rtkit-daemon[1242]: Supervising 4 threads of 2 processes of 1 users.
Jan 19 12:27:37 david-FrankenBook kernel: [ 471.301724] perf: interrupt took too long (4030 > 3970), lowering kernel.perf_event_max_sample_rate to 49500
Jan 19 12:26:14 david-FrankenBook rtkit-daemon[1242]: message repeated 3 times: [ Supervising 4 threads of 2 processes of 1 users.]
Jan 19 12:27:41 david-FrankenBook kernel: [ 474.396043] usb usb4-port2: disabled by hub (EMI?), re-enabling...
Jan 19 12:27:41 david-FrankenBook kernel: [ 474.396061] usb 4-2: USB disconnect, device number 13
Jan 19 12:27:41 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0/0003:093A:2510.000C
Jan 19 12:27:41 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.0
Jan 19 12:27:41 david-FrankenBook upowerd[1134]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:06.0/usb4/4-2
Jan 19 12:27:41 david-FrankenBook kernel: [ 474.769870] usb 4-2: new low-speed USB device number 14 using ohci-pci
Jan 19 12:27:41 david-FrankenBook kernel: [ 475.010950] usb 4-2: New USB device found, idVendor=093a, idProduct=2510, bcdDevice= 1.00
Jan 19 12:27:41 david-FrankenBook kernel: [ 475.010957] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jan 19 12:27:41 david-FrankenBook kernel: [ 475.010962] usb 4-2: Product: USB Optical Mouse
Jan 19 12:27:41 david-FrankenBook kernel: [ 475.010967] usb 4-2: Manufacturer: PixArt
没有 USB 集线器。这是一台普通的塑料 MacBook，我使用侧面内置的标准 USB 端口。