Alguns dias atrás eu tentei conectar um ventilador em uma das minhas portas USB. Para meu espanto, não funcionou. Eu desconectei meu mouse e coloquei o plugue do ventilador de resfriamento lá, e funcionou muito bem, mas na outra porta não mudou nada. Então, por confusão e curiosidade, eu substituí a porta agora vazia com o receptor do meu mouse. Não funcionou. Muito para meu espanto depois de substituí-lo de volta em sua porta usual e usando o meu Xbox 360 para alimentar o ventilador de refrigeração, agora nenhuma das portas de trabalho. Vou colar o outpust do dmesg abaixo com as duas portas vazias, depois com o mouse conectado a uma porta e um teclado USB na outra. Se minha saída do dmesg estiver errada, por favor, avise-me.
Saída Dmesg com portas vazias:
[ 1.520468] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.520476] ehci-pci: EHCI PCI platform driver
[ 1.520772] ehci-pci 0000:00:12.2: EHCI Host Controller
[ 1.520787] ehci-pci 0000:00:12.2: new USB bus registered, assigned bus number 1
[ 1.520796] ehci-pci 0000:00:12.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
[ 1.520811] ehci-pci 0000:00:12.2: debug port 1
[ 1.520876] ehci-pci 0000:00:12.2: irq 17, io mem 0xd2306400
[ 1.532066] ehci-pci 0000:00:12.2: USB 2.0 started, EHCI 1.00
[ 1.532154] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.532158] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.532161] usb usb1: Product: EHCI Host Controller
[ 1.532164] usb usb1: Manufacturer: Linux 3.16.0-45-generic ehci_hcd
[ 1.532167] usb usb1: SerialNumber: 0000:00:12.2
[ 1.532396] hub 1-0:1.0: USB hub found
[ 1.532409] hub 1-0:1.0: 6 ports detected
[ 1.532849] ehci-platform: EHCI generic platform driver
[ 1.532877] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.532885] ohci-pci: OHCI PCI platform driver
[ 1.533105] ohci-pci 0000:00:12.0: OHCI PCI host controller
[ 1.533115] ohci-pci 0000:00:12.0: new USB bus registered, assigned bus number 2
[ 1.533156] ohci-pci 0000:00:12.0: irq 16, io mem 0xd2305000
[ 1.592118] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.592122] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Saída Dmesg com o mouse conectado:
[ 1.520468] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.520476] ehci-pci: EHCI PCI platform driver
[ 1.520772] ehci-pci 0000:00:12.2: EHCI Host Controller
[ 1.520787] ehci-pci 0000:00:12.2: new USB bus registered, assigned bus number 1
[ 1.520796] ehci-pci 0000:00:12.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
[ 1.520811] ehci-pci 0000:00:12.2: debug port 1
[ 1.520876] ehci-pci 0000:00:12.2: irq 17, io mem 0xd2306400
[ 1.532066] ehci-pci 0000:00:12.2: USB 2.0 started, EHCI 1.00
[ 1.532154] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.532158] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.532161] usb usb1: Product: EHCI Host Controller
[ 1.532164] usb usb1: Manufacturer: Linux 3.16.0-45-generic ehci_hcd
[ 1.532167] usb usb1: SerialNumber: 0000:00:12.2
[ 1.532396] hub 1-0:1.0: USB hub found
[ 1.532409] hub 1-0:1.0: 6 ports detected
[ 1.532849] ehci-platform: EHCI generic platform driver
[ 1.532877] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.532885] ohci-pci: OHCI PCI platform driver
[ 1.533105] ohci-pci 0000:00:12.0: OHCI PCI host controller
[ 1.533115] ohci-pci 0000:00:12.0: new USB bus registered, assigned bus number 2
[ 1.533156] ohci-pci 0000:00:12.0: irq 16, io mem 0xd2305000
[ 1.592118] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.592122] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Saída Dmesg com teclado USB e mouse conectados:
[ 1.520468] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.520476] ehci-pci: EHCI PCI platform driver
[ 1.520772] ehci-pci 0000:00:12.2: EHCI Host Controller
[ 1.520787] ehci-pci 0000:00:12.2: new USB bus registered, assigned bus number 1
[ 1.520796] ehci-pci 0000:00:12.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
[ 1.520811] ehci-pci 0000:00:12.2: debug port 1
[ 1.520876] ehci-pci 0000:00:12.2: irq 17, io mem 0xd2306400
[ 1.532066] ehci-pci 0000:00:12.2: USB 2.0 started, EHCI 1.00
[ 1.532154] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.532158] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.532161] usb usb1: Product: EHCI Host Controller
[ 1.532164] usb usb1: Manufacturer: Linux 3.16.0-45-generic ehci_hcd
[ 1.532167] usb usb1: SerialNumber: 0000:00:12.2
[ 1.532396] hub 1-0:1.0: USB hub found
[ 1.532409] hub 1-0:1.0: 6 ports detected
[ 1.532849] ehci-platform: EHCI generic platform driver
[ 1.532877] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.532885] ohci-pci: OHCI PCI platform driver
[ 1.533105] ohci-pci 0000:00:12.0: OHCI PCI host controller
[ 1.533115] ohci-pci 0000:00:12.0: new USB bus registered, assigned bus number 2
[ 1.533156] ohci-pci 0000:00:12.0: irq 16, io mem 0xd2305000
[ 1.592118] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.592122] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Agora .. alguém pode me ajudar aqui? O que há de errado com as portas? As portas estão bagunçadas fisicamente? Ou isso é um problema de hardware? Por favor ajude!