Isso parece suspeitamente semelhante a um cabo ou porta USB quebrado. Posso dizer com certeza porque estou usando o seguinte: toda vez que eu toco um cabo do hub USB, vejo em /var/log/syslog
uma parede dessas mensagens sobre a conexão (dis) , e aumentando o número do dispositivo; e o mouse conectado redefine sua sensibilidade.
Apenas para registro, aqui está um exemplo do meu registro:
Aug 20 17:22:38 constantine-N61Ja kernel: [55857.366422] usb 4-1.1: USB disconnect, device number 25
Aug 20 17:22:38 constantine-N61Ja kernel: [55857.366428] usb 4-1.1.2: USB disconnect, device number 26
Aug 20 17:22:38 constantine-N61Ja kernel: [55857.366730] usb 4-1.1.3: USB disconnect, device number 27
Aug 20 17:22:39 constantine-N61Ja kernel: [55857.690545] usb 4-1.1: new high-speed USB device number 28 using ehci-pci
Aug 20 17:22:39 constantine-N61Ja kernel: [55857.774736] hub 4-1.1:1.0: USB hub found
Aug 20 17:22:39 constantine-N61Ja kernel: [55857.774788] hub 4-1.1:1.0: 4 ports detected
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.043972] usb 4-1.1.2: new low-speed USB device number 29 using ehci-pci
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.142289] input: HID 192f:0716 as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1.2/4-1.1.2:1.0/0003:192F:0716.0019/input/input49
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.142518] hid-generic 0003:192F:0716.0019: input,hidraw0: USB HID v1.11 Mouse [HID 192f:0716] on usb-0000:00:1d.0-1.1.2/input0
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.207327] usb 4-1.1.3: new low-speed USB device number 30 using ehci-pci
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.320867] input: USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1.3/4-1.1.3:1.0/0003:04D9:1702.001A/input/input50
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.374364] hid-generic 0003:04D9:1702.001A: input,hidraw1: USB HID v1.10 Keyboard [ USB Keyboard] on usb-0000:00:1d.0-1.1.3/input0
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.391406] input: USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1.3/4-1.1.3:1.1/0003:04D9:1702.001B/input/input51
Aug 20 17:22:39 constantine-N61Ja kernel: [55858.444140] hid-generic 0003:04D9:1702.001B: input,hidraw2: USB HID v1.10 Device [ USB Keyboard] on usb-0000:00:1d.0-1.1.3/input1