Acabei de editar o título do post para adicionar algo. Achava eu que era só em Xorg mas por algum motivo está acontecendo o mesmo em Wayland. Eu já não sei mais o que está causando isso. Achei que era problema de hardware mas isso acontece com todos os mouses USB que pude testar. Desconecto um, conecto outro e continua sem funcionar. Rodei dmesg e o resultado é esse:
[19080.760280] usb 1-1.3: USB disconnect, device number 3
[19081.043618] usb 1-1.3: new low-speed USB device number 8 using ehci-pci
[19081.159376] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[19081.159379] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[19081.159380] usb 1-1.3: Product: USB OPTICAL MOUSE
[19081.161942] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0004/input/input14
[19081.162026] hid-generic 0003:275D:0A29.0004: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[19085.624221] usb 1-1.3: USB disconnect, device number 8
[19085.891658] usb 1-1.3: new low-speed USB device number 9 using ehci-pci
[19086.003341] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[19086.003344] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[19086.003345] usb 1-1.3: Product: USB OPTICAL MOUSE
[19086.005890] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0005/input/input15
[19086.005963] hid-generic 0003:275D:0A29.0005: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[19090.488813] usb 1-1.3: USB disconnect, device number 9
[19090.759708] usb 1-1.3: new low-speed USB device number 10 using ehci-pci
[19090.871322] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[19090.871325] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[19090.871326] usb 1-1.3: Product: USB OPTICAL MOUSE
[19090.874050] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0006/input/input16
[19090.874180] hid-generic 0003:275D:0A29.0006: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[21379.453748] usb 2-1.4: current rate 2335744 is different from the runtime rat
e 48000
[23297.563978] usb 1-1.3: USB disconnect, device number 10
[23297.872827] usb 1-1.3: new low-speed USB device number 11 using ehci-pci
[23297.985352] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[23297.985356] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[23297.985357] usb 1-1.3: Product: USB OPTICAL MOUSE
[23297.988139] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0007/input/input17
[23297.988626] hid-generic 0003:275D:0A29.0007: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[23420.682516] traps: minecraft-launc[28714] trap int3 ip:7fbf17d3f165 sp:7ffc5f
bcb3c0 error:0 in libglib-2.0.so.0.6200.6[7fbf17d05000+80000]
[23608.602037] usb 1-1.3: USB disconnect, device number 11
[23608.859562] usb 1-1.3: new low-speed USB device number 12 using ehci-pci
[23608.979166] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[23608.979168] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[23608.979169] usb 1-1.3: Product: USB OPTICAL MOUSE
[23608.981741] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0008/input/input18
[23608.982035] hid-generic 0003:275D:0A29.0008: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[23876.376132] usb 1-1.3: USB disconnect, device number 12
[23876.653909] usb 1-1.3: new low-speed USB device number 13 using ehci-pci
[23876.765479] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[23876.765482] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[23876.765484] usb 1-1.3: Product: USB OPTICAL MOUSE
[23876.768402] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.0009/input/input19
[23876.768740] hid-generic 0003:275D:0A29.0009: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[23878.936107] usb 1-1.3: USB disconnect, device number 13
[23879.209925] usb 1-1.3: new low-speed USB device number 14 using ehci-pci
[23879.713927] usb 1-1.3: device not accepting address 14, error -32
[23880.209960] usb 1-1.3: new low-speed USB device number 15 using ehci-pci
[23880.325966] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[23880.325969] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[23880.325971] usb 1-1.3: Product: USB OPTICAL MOUSE
[23880.328912] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.000A/input/input20
[23880.329233] hid-generic 0003:275D:0A29.000A: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[23881.240062] usb 1-1.3: USB disconnect, device number 15
[23881.513947] usb 1-1.3: new low-speed USB device number 16 using ehci-pci
[23881.625559] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[23881.625561] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[23881.625563] usb 1-1.3: Product: USB OPTICAL MOUSE
[23881.628267] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.000B/input/input21
[23881.628364] hid-generic 0003:275D:0A29.000B: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
[24055.063065] usb 1-1.3: USB disconnect, device number 16
[24055.331481] usb 1-1.3: new low-speed USB device number 17 using ehci-pci
[24055.447852] usb 1-1.3: New USB device found, idVendor=275d, idProduct=0a29, b
cdDevice= 1.00
[24055.447856] usb 1-1.3: New USB device strings: Mfr=0, Product=1, SerialNumber
=0
[24055.447859] usb 1-1.3: Product: USB OPTICAL MOUSE
[24055.451326] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1a.0/usb
1/1-1/1-1.3/1-1.3:1.0/0003:275D:0A29.000C/input/input22
[24055.451534] hid-generic 0003:275D:0A29.000C: input,hidraw0: USB HID v1.11 Mou
se [USB OPTICAL MOUSE ] on usb-0000:00:1a.0-1.3/input0
O curioso é que em Wayland o cursor aparece e desaparece o tempo todo. Isso faz sentido com esse output. Ele conecta e desconecta várias vezes. Só não sei o que causa ou como arrumar