dmesg :

Normal use

[    6.930038] usb usb2: configuration #1 chosen from 1 choice
[    6.930051] hub 2-0:1.0: USB hub found
[    6.930057] hub 2-0:1.0: 10 ports detected
[    6.930111] uhci_hcd: USB Universal Host Controller Interface driver
[    6.930147] usbcore: registered new interface driver libusual
[    6.930167] usbcore: registered new interface driver usbserial
[    6.930173] USB Serial support registered for generic
[    6.930179] usbcore: registered new interface driver usbserial_generic
[    6.930181] usbserial: USB Serial Driver core
[    6.930208] PNP: No PS/2 controller found. Probing ports directly.
[    6.930514] serio: i8042 KBD port at 0x60,0x64 irq 1
[    6.930517] serio: i8042 AUX port at 0x60,0x64 irq 12
[    6.940530] mice: PS/2 mouse device common for all mice

[    7.556026] usb 2-8: new low speed USB device using ohci_hcd and address 2
[    7.672614] forcedeth 0000:00:08.0: ifname eth0, PHY OUI 0x5043 @ 1, addr 00:1d:7d:a6:a1:18
[    7.672616] forcedeth 0000:00:08.0: highdma csum vlan pwrctl mgmt timirq gbit lnktim msi desc-v3
[    7.792100] usb 2-8: configuration #1 chosen from 1 choice
[    7.798128] usbcore: registered new interface driver hiddev
[    7.950101] generic-usb 0003:10AF:0001.0001: hiddev96,hidraw0: USB HID v1.11 Device [Liebert Liebert PSA1000 FW:09] on usb-0000:00:02.0-8/input0
[    7.950115] usbcore: registered new interface driver usbhid
[    7.950117] usbhid: v2.6:USB HID core driver
[    8.051699] PM: Starting manual resume from disk
[    8.051701] PM: Resume from partition 8:5
[    8.051702] PM: Checking hibernation image.
[    8.051828] PM: Resume from disk failed.
[    8.061674] EXT4-fs: barriers enabled
[    8.073956] kjournald2 starting.  Commit interval 5 seconds
[    8.073962] EXT4-fs: delayed allocation enabled
[    8.073963] EXT4-fs: file extents enabled
[    8.074062] EXT4-fs: mballoc enabled
[    8.074064] EXT4-fs: mounted filesystem with ordered data mode.
[    8.096520] usb 2-9: new low speed USB device using ohci_hcd and address 3
[    8.314099] usb 2-9: configuration #1 chosen from 1 choice
[    8.329311] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input3
[    8.352542] generic-usb 0003:046D:C50E.0002: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[    8.496599] ieee1394: Host added: ID:BUS[0-00:1023]  GUID[001d7d5600f16347]
[    8.656524] usb 2-10: new low speed USB device using ohci_hcd and address 4
[    8.863096] usb 2-10: configuration #1 chosen from 1 choice
[   11.598308] udev: starting version 141
[   11.834297] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.0/input/input4
[   11.856647] cherry 0003:046A:0023.0003: input,hidraw2: USB HID v1.11 Keyboard [HID 046a:0023] on usb-0000:00:02.0-10/input0
[   11.867127] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.1/input/input5
[   11.896664] cherry 0003:046A:0023.0004: input,hidraw3: USB HID v1.11 Device [HID 046a:0023] on usb-0000:00:02.0-10/input1
[   11.947850] i2c-adapter i2c-0: nForce2 SMBus adapter at 0x1c00
[   11.947875] i2c-adapter i2c-1: nForce2 SMBus adapter at 0x1c80
[   12.027786] parport_pc 00:09: reported by Plug and Play ACPI

[ 1146.226013] usb 2-9: USB disconnect, address 3
[ 1178.756041] usb 2-9: new low speed USB device using ohci_hcd and address 5
[ 1178.973744] usb 2-9: configuration #1 chosen from 1 choice
[ 1179.005139] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input7
[ 1179.038540] generic-usb 0003:046D:C50E.0005: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[ 1520.741012] usb 2-9: USB disconnect, address 5
[ 1538.196538] usb 2-9: new low speed USB device using ohci_hcd and address 6
[ 1538.413878] usb 2-9: configuration #1 chosen from 1 choice
[ 1538.440295] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input8
[ 1538.472677] generic-usb 0003:046D:C50E.0006: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0


USB mouse device unplugged :

[    6.930038] usb usb2: configuration #1 chosen from 1 choice
[    6.930051] hub 2-0:1.0: USB hub found
[    6.930057] hub 2-0:1.0: 10 ports detected
[    6.930111] uhci_hcd: USB Universal Host Controller Interface driver
[    6.930147] usbcore: registered new interface driver libusual
[    6.930167] usbcore: registered new interface driver usbserial
[    6.930173] USB Serial support registered for generic
[    6.930179] usbcore: registered new interface driver usbserial_generic
[    6.930181] usbserial: USB Serial Driver core
[    6.930208] PNP: No PS/2 controller found. Probing ports directly.
[    6.930514] serio: i8042 KBD port at 0x60,0x64 irq 1
[    6.930517] serio: i8042 AUX port at 0x60,0x64 irq 12
[    6.940530] mice: PS/2 mouse device common for all mice

[    7.792100] usb 2-8: configuration #1 chosen from 1 choice
[    7.798128] usbcore: registered new interface driver hiddev
[    7.950101] generic-usb 0003:10AF:0001.0001: hiddev96,hidraw0: USB HID v1.11 Device [Liebert Liebert PSA1000 FW:09] on usb-0000:00:02.0-8/input0
[    7.950115] usbcore: registered new interface driver usbhid
[    7.950117] usbhid: v2.6:USB HID core driver
[    8.051699] PM: Starting manual resume from disk
[    8.051701] PM: Resume from partition 8:5
[    8.051702] PM: Checking hibernation image.
[    8.051828] PM: Resume from disk failed.
[    8.061674] EXT4-fs: barriers enabled
[    8.073956] kjournald2 starting.  Commit interval 5 seconds
[    8.073962] EXT4-fs: delayed allocation enabled
[    8.073963] EXT4-fs: file extents enabled
[    8.074062] EXT4-fs: mballoc enabled
[    8.074064] EXT4-fs: mounted filesystem with ordered data mode.
[    8.096520] usb 2-9: new low speed USB device using ohci_hcd and address 3
[    8.314099] usb 2-9: configuration #1 chosen from 1 choice
[    8.329311] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input3
[    8.352542] generic-usb 0003:046D:C50E.0002: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[    8.496599] ieee1394: Host added: ID:BUS[0-00:1023]  GUID[001d7d5600f16347]
[    8.656524] usb 2-10: new low speed USB device using ohci_hcd and address 4
[    8.863096] usb 2-10: configuration #1 chosen from 1 choice
[   11.598308] udev: starting version 141
[   11.834297] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.0/input/input4
[   11.856647] cherry 0003:046A:0023.0003: input,hidraw2: USB HID v1.11 Keyboard [HID 046a:0023] on usb-0000:00:02.0-10/input0
[   11.867127] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.1/input/input5
[   11.896664] cherry 0003:046A:0023.0004: input,hidraw3: USB HID v1.11 Device [HID 046a:0023] on usb-0000:00:02.0-10/input1
[   11.947850] i2c-adapter i2c-0: nForce2 SMBus adapter at 0x1c00
[   11.947875] i2c-adapter i2c-1: nForce2 SMBus adapter at 0x1c80
[   12.027786] parport_pc 00:09: reported by Plug and Play ACPI

[ 1146.226013] usb 2-9: USB disconnect, address 3
[ 1178.756041] usb 2-9: new low speed USB device using ohci_hcd and address 5
[ 1178.973744] usb 2-9: configuration #1 chosen from 1 choice
[ 1179.005139] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input7
[ 1179.038540] generic-usb 0003:046D:C50E.0005: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[ 1520.741012] usb 2-9: USB disconnect, address 5
[ 1538.196538] usb 2-9: new low speed USB device using ohci_hcd and address 6
[ 1538.413878] usb 2-9: configuration #1 chosen from 1 choice
[ 1538.440295] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input8
[ 1538.472677] generic-usb 0003:046D:C50E.0006: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[ 2203.277978] usb 2-9: USB disconnect, address 6
[ 2221.428034] usb 2-9: new low speed USB device using ohci_hcd and address 7
[ 2221.646154] usb 2-9: configuration #1 chosen from 1 choice
[ 2221.664923] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input9
[ 2221.701785] generic-usb 0003:046D:C50E.0007: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[ 2231.816114] usb 2-9: USB disconnect, address 7


Piles (battery) of wireless mouse off (so mouse inactive) but USB device on :

[    6.930038] usb usb2: configuration #1 chosen from 1 choice
[    6.930051] hub 2-0:1.0: USB hub found
[    6.930057] hub 2-0:1.0: 10 ports detected
[    6.930111] uhci_hcd: USB Universal Host Controller Interface driver
[    6.930147] usbcore: registered new interface driver libusual
[    6.930167] usbcore: registered new interface driver usbserial
[    6.930173] USB Serial support registered for generic
[    6.930179] usbcore: registered new interface driver usbserial_generic
[    6.930181] usbserial: USB Serial Driver core
[    6.930208] PNP: No PS/2 controller found. Probing ports directly.
[    6.930514] serio: i8042 KBD port at 0x60,0x64 irq 1
[    6.930517] serio: i8042 AUX port at 0x60,0x64 irq 12
[    6.940530] mice: PS/2 mouse device common for all mice

[    7.556026] usb 2-8: new low speed USB device using ohci_hcd and address 2
[    7.672614] forcedeth 0000:00:08.0: ifname eth0, PHY OUI 0x5043 @ 1, addr 00:1d:7d:a6:a1:18
[    7.672616] forcedeth 0000:00:08.0: highdma csum vlan pwrctl mgmt timirq gbit lnktim msi desc-v3
[    7.792100] usb 2-8: configuration #1 chosen from 1 choice
[    7.798128] usbcore: registered new interface driver hiddev
[    7.950101] generic-usb 0003:10AF:0001.0001: hiddev96,hidraw0: USB HID v1.11 Device [Liebert Liebert PSA1000 FW:09] on usb-0000:00:02.0-8/input0
[    7.950115] usbcore: registered new interface driver usbhid
[    7.950117] usbhid: v2.6:USB HID core driver
[    8.051699] PM: Starting manual resume from disk
[    8.051701] PM: Resume from partition 8:5
[    8.051702] PM: Checking hibernation image.
[    8.051828] PM: Resume from disk failed.
[    8.061674] EXT4-fs: barriers enabled
[    8.073956] kjournald2 starting.  Commit interval 5 seconds
[    8.073962] EXT4-fs: delayed allocation enabled
[    8.073963] EXT4-fs: file extents enabled
[    8.074062] EXT4-fs: mballoc enabled
[    8.074064] EXT4-fs: mounted filesystem with ordered data mode.
[    8.096520] usb 2-9: new low speed USB device using ohci_hcd and address 3
[    8.314099] usb 2-9: configuration #1 chosen from 1 choice
[    8.329311] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input3
[    8.352542] generic-usb 0003:046D:C50E.0002: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[    8.496599] ieee1394: Host added: ID:BUS[0-00:1023]  GUID[001d7d5600f16347]
[    8.656524] usb 2-10: new low speed USB device using ohci_hcd and address 4
[    8.863096] usb 2-10: configuration #1 chosen from 1 choice
[   11.598308] udev: starting version 141
[   11.834297] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.0/input/input4
[   11.856647] cherry 0003:046A:0023.0003: input,hidraw2: USB HID v1.11 Keyboard [HID 046a:0023] on usb-0000:00:02.0-10/input0
[   11.867127] input: HID 046a:0023 as /devices/pci0000:00/0000:00:02.0/usb2/2-10/2-10:1.1/input/input5
[   11.896664] cherry 0003:046A:0023.0004: input,hidraw3: USB HID v1.11 Device [HID 046a:0023] on usb-0000:00:02.0-10/input1
[   11.947850] i2c-adapter i2c-0: nForce2 SMBus adapter at 0x1c00
[   11.947875] i2c-adapter i2c-1: nForce2 SMBus adapter at 0x1c80
[   12.027786] parport_pc 00:09: reported by Plug and Play ACPI

[ 1146.226013] usb 2-9: USB disconnect, address 3
[ 1178.756041] usb 2-9: new low speed USB device using ohci_hcd and address 5
[ 1178.973744] usb 2-9: configuration #1 chosen from 1 choice
[ 1179.005139] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input7
[ 1179.038540] generic-usb 0003:046D:C50E.0005: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0
[ 1520.741012] usb 2-9: USB disconnect, address 5
[ 1538.196538] usb 2-9: new low speed USB device using ohci_hcd and address 6
[ 1538.413878] usb 2-9: configuration #1 chosen from 1 choice
[ 1538.440295] input: Logitech USB RECEIVER as /devices/pci0000:00/0000:00:02.0/usb2/2-9/2-9:1.0/input/input8
[ 1538.472677] generic-usb 0003:046D:C50E.0006: input,hidraw1: USB HID v1.11 Mouse [Logitech USB RECEIVER] on usb-0000:00:02.0-9/input0