Armadilloフォーラム

==========
製品型番：
Debian/ABOSバージョン：Debian 9
カーネルバージョン：4.9.133-at21
3G/LTE モジュール情報 (Debianのみ)：SORACOM plan-D
その他：
==========

Armadillo G3のppp0が頻繁にインタフェースダウン/アップを繰り返すため設定で改善出来る方法があればご教示ください。
dmesgには下記のようにttyUSB が detect , disconnectを繰り返す現象が見られます。
原因として考えられる電源供給については、G3付属のACアダプタを使用しています。
機器固有のハードウェア故障か、設定で改善可能な問題か、ご教示ください。

```
usb 2-1.2: USB disconnect, device number 17
option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
option 2-1.2:1.0: device disconnected
option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
option 2-1.2:1.1: device disconnected
option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
option 2-1.2:1.2: device disconnected
option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
option 2-1.2:1.3: device disconnected
usb 2-1.2: new high-speed USB device number 18 using ci_hdrc
option 2-1.2:1.0: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
option 2-1.2:1.1: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1
option 2-1.2:1.2: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB2
option 2-1.2:1.3: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB3
usb 2-1.2: USB disconnect, device number 18
option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
option 2-1.2:1.0: device disconnected
option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
option 2-1.2:1.1: device disconnected
option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
option 2-1.2:1.2: device disconnected
option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
option 2-1.2:1.3: device disconnected
usb 2-1.2: new high-speed USB device number 19 using ci_hdrc
option 2-1.2:1.0: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
option 2-1.2:1.1: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1
option 2-1.2:1.2: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB2
option 2-1.2:1.3: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB3
```