FTDI USBハブは接続を切断/再接続し続けます。

FTDI FT4232Hを連続的にドロップして再ロードできるシステムがあります。ケーブルを交換してみましたが、まだこの現象が発生します。

usbcore.autosuspend=-1自動中断の問題かもしれないと思ってカーネルブートパラメータで設定しようとしましたが、それでも発生します。

完全なログ：http://termbin.com/0na9

いくつかのログ：

Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:02:44 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 54 using xhci_hcd
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.0: FTDI USB Serial Device converter detected
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB0
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.1: FTDI USB Serial Device converter detected
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB1
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.2: FTDI USB Serial Device converter detected
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB2
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.3: FTDI USB Serial Device converter detected
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB3
Aug 22 17:02:45 evo4k-098acd kernel: usb 1-8: USB disconnect, device number 54
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:02:45 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 55 using xhci_hcd
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.0: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB0
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.1: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB1
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.2: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB2
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.3: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB3
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: USB disconnect, device number 55
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 56 using xhci_hcd
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.0: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB0
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.1: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB1
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.2: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB2
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.3: FTDI USB Serial Device converter detected
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB3
Aug 22 17:02:46 evo4k-098acd kernel: usb 1-8: USB disconnect, device number 56
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:02:46 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:02:47 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 57 using xhci_hcd
Aug 22 17:02:47 evo4k-098acd kernel: usb 1-8: Device not responding to setup address.
Aug 22 17:02:47 evo4k-098acd kernel: usb 1-8: Device not responding to setup address.
Aug 22 17:02:47 evo4k-098acd kernel: usb 1-8: device not accepting address 57, error -71
Aug 22 17:02:48 evo4k-098acd kernel: usb usb1-port8: Cannot enable. Maybe the USB cable is bad?
Aug 22 17:02:48 evo4k-098acd kernel: usb usb1-port8: attempt power cycle
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 59 using xhci_hcd
Aug 22 17:02:49 evo4k-098acd kernel: ftdi_sio 1-8:1.0: FTDI USB Serial Device converter detected
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB0
Aug 22 17:02:49 evo4k-098acd kernel: ftdi_sio 1-8:1.1: FTDI USB Serial Device converter detected
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB1
Aug 22 17:02:49 evo4k-098acd kernel: ftdi_sio 1-8:1.2: FTDI USB Serial Device converter detected
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB2
Aug 22 17:02:49 evo4k-098acd kernel: ftdi_sio 1-8:1.3: FTDI USB Serial Device converter detected
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:02:49 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB3
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: USB disconnect, device number 59
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 60 using xhci_hcd
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.0: FTDI USB Serial Device converter detected
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB0
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.1: FTDI USB Serial Device converter detected
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB1
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.2: FTDI USB Serial Device converter detected
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB2
Aug 22 17:03:27 evo4k-098acd kernel: ftdi_sio 1-8:1.3: FTDI USB Serial Device converter detected
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: Detected FT4232H
Aug 22 17:03:27 evo4k-098acd kernel: usb 1-8: FTDI USB Serial Device converter now attached to ttyUSB3
Aug 22 17:03:29 evo4k-098acd kernel: usb 1-8: USB disconnect, device number 60
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio 1-8:1.0: device disconnected
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio 1-8:1.1: device disconnected
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio 1-8:1.2: device disconnected
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
Aug 22 17:03:29 evo4k-098acd kernel: ftdi_sio 1-8:1.3: device disconnected
Aug 22 17:03:29 evo4k-098acd kernel: usb 1-8: new high-speed USB device number 61 using xhci_hcd

マイコンピュータ/カーネル：

Linux evo4k-098acd 4.14.48-intel-pk-standard #1 SMP PREEMPT Mon Jul 2 15:53:16 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux