Помогает только полная перезагрузка.
Когда происходит отключение. Не работаю команды выкл/вкл wi-fi
Вывод команды dmesg(часть всё не влезло), после отключения wi-fi:
usb 5-1: Product: USB OPTICAL MOUSE
[236690.354098] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.0/0003:0000:0538.0005/input/input20
[236690.354627] hid-generic 0003:0000:0538.0005: input,hidraw0: USB HID v1.11 Mouse [ USB OPTICAL MOUSE] on usb-0000:00:1d.0-1/input0
[236720.212064] usb 2-6: reset high-speed USB device number 3 using ehci-pci
[236753.177906] IPv6: ADDRCONF(NETDEV_UP): wlp8s0: link is not ready
[236754.384145] iwl3945 0000:08:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[236754.384153] iwl3945 0000:08:00.0: Unable to set up bootstrap uCode: -5
[236754.430852] iwl3945 0000:08:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[236754.430858] iwl3945 0000:08:00.0: Unable to set up bootstrap uCode: -5
[236754.477562] iwl3945 0000:08:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[236754.477567] iwl3945 0000:08:00.0: Unable to set up bootstrap uCode: -5
[236754.524270] iwl3945 0000:08:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[236754.524274] iwl3945 0000:08:00.0: Unable to set up bootstrap uCode: -5
[236754.571065] iwl3945 0000:08:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[236754.571071] iwl3945 0000:08:00.0: Unable to set up bootstrap uCode: -5
[236754.607651] iwl3945 0000:08:00.0: Unable to initialize device after 5 attempts.
[236755.461758] IPv6: ADDRCONF(NETDEV_UP): wlp8s0: link is not ready
[237116.176306] usb 5-1: USB disconnect, device number 6
[237408.492196] usb 5-1: new low-speed USB device number 7 using uhci_hcd
[237408.662204] usb 5-1: New USB device found, idVendor=0000, idProduct=0538
[237408.662214] usb 5-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[237408.662221] usb 5-1: Product: USB OPTICAL MOUSE
[237408.681314] input: USB OPTICAL MOUSE as /devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.0/0003:0000:0538.0006/input/input21
[237408.736610] hid-generic 0003:0000:0538.0006: input,hidraw0: USB HID v1.11 Mouse [ USB OPTICAL MOUSE] on usb-0000:00:1d.0-1/input0
Сетевой адаптер Intel® PRO/Wireless 3945ABG
Такая же проблема наблюдалась на mint 18.1, не было проблем на windows XP, 7 и на Debian 8.7(но он слишком сложен для меня, пока). Все системы пробовал и 64 и 32-битные. Проблема только на ubuntu и mint без разницы на битность.