The User Manual has a discussion
<http://weewx.com/docs/usersguide.htm#davis_cp2101_converter> about this in
the context of the Vantage driver, but the same fix can be used for other
hardware.

-tk



On Wed, Dec 28, 2016 at 2:19 PM, Per Edström <[email protected]>
wrote:

> This is probably related to my HW i.e. the Ebox3350 and the
> RS232-to-USB-unit )PL2303). But maybe other Weewx-users have experienced a
> change in USB-device?
>
> Questions:
> - Why is the USB reset?
> - Why does it change device number?
> - Is there any way to lock the PL2303 to /dev/ttyUSB0 so it doesn't change?
>
> After a reboot it is back to /dev/ttyUSB0
>
> "
> Dec 28 03:49:14 Ebox3350 kernel: [43641.405860] usb 1-2.3: input irq
> status -75  received
> Dec 28 03:49:16 Ebox3350 weewx[3202]: wmr9x8: Received WMR9x8 data packet.
> Dec 28 03:49:19 Ebox3350 kernel: [43646.533834] usb 1-2.3: input irq
> status -75  received
> Dec 28 03:49:24 Ebox3350 kernel: [43651.465190] *usb 1-2: USB disconnect,
> address 2*
> Dec 28 03:49:24 Ebox3350 kernel: [43651.465211] usb 1-2.1: USB disconnect,
> address 3
> Dec 28 03:49:24 Ebox3350 kernel: [43651.465929] usb 1-2.3: USB disconnect,
> address 4
> Dec 28 03:49:24 Ebox3350 kernel: [43651.485257] *usb 1-2.4: USB
> disconnect, address 5*
> Dec 28 03:49:24 Ebox3350 kernel: [43651.485679] *usb 1-2: clear tt 4
> (9053) error -19*
> Dec 28 03:49:24 Ebox3350 kernel: [43651.527638] *pl2303 ttyUSB0: pl2303
> converter now disconnected from ttyUSB0*
> Dec 28 03:49:24 Ebox3350 kernel: [43651.527996] pl2303 1-2.4:1.0: device
> disconnected
> Dec 28 03:49:24 Ebox3350 kernel: [43651.817456] usb 1-2: new high speed
> USB device using ehci_hcd and address 6
> Dec 28 03:49:24 Ebox3350 kernel: [43651.941412] usb 1-2: New USB device
> found, idVendor=1a40, idProduct=0101
> Dec 28 03:49:24 Ebox3350 kernel: [43651.941436] usb 1-2: New USB device
> strings: Mfr=0, Product=1, SerialNumber=0
> Dec 28 03:49:24 Ebox3350 kernel: [43651.941453] usb 1-2: Product: USB 2.0
> Hub [MTT]
> Dec 28 03:49:24 Ebox3350 kernel: [43651.946294] hub 1-2:1.0: USB hub found
> Dec 28 03:49:24 Ebox3350 kernel: [43651.946695] hub 1-2:1.0: 4 ports
> detected
> Dec 28 03:49:24 Ebox3350 kernel: [43652.214202] usb 1-2.1: new full speed
> USB device using ehci_hcd and address 7
> Dec 28 03:49:24 Ebox3350 kernel: [43652.304159] usb 1-2.1: New USB device
> found, idVendor=1781, idProduct=0c31
> Dec 28 03:49:24 Ebox3350 kernel: [43652.304183] usb 1-2.1: New USB device
> strings: Mfr=1, Product=2, SerialNumber=3
> Dec 28 03:49:24 Ebox3350 kernel: [43652.304200] usb 1-2.1: Product:
> TellStick Duo
> Dec 28 03:49:24 Ebox3350 kernel: [43652.304213] usb 1-2.1: Manufacturer:
> Telldus
> Dec 28 03:49:24 Ebox3350 kernel: [43652.304226] usb 1-2.1: SerialNumber:
> A501IW2P
> Dec 28 03:49:25 Ebox3350 kernel: [43652.380956] usb 1-2.3: new low speed
> USB device using ehci_hcd and address 8
> Dec 28 03:49:25 Ebox3350 kernel: [43652.510039] usb 1-2.3: New USB device
> found, idVendor=051d, idProduct=0002
> Dec 28 03:49:25 Ebox3350 kernel: [43652.510062] usb 1-2.3: New USB device
> strings: Mfr=3, Product=1, SerialNumber=2
> Dec 28 03:49:25 Ebox3350 kernel: [43652.510080] usb 1-2.3: Product:
> Back-UPS ES 700 FW:829.D2 .I USB FW:D2
> Dec 28 03:49:25 Ebox3350 kernel: [43652.510096] usb 1-2.3: Manufacturer:
> APC
> Dec 28 03:49:25 Ebox3350 kernel: [43652.510109] usb 1-2.3: SerialNumber:
> 5B0823T19645
> Dec 28 03:49:25 Ebox3350 kernel: [43652.864594] generic-usb
> 0003:051D:0002.0002: hiddev96,hidraw0: USB HID v1.10 Device [APC Back-UPS
> ES 700 FW:829.D2 .I USB FW:D2 ] on usb-0000:00:0a.1-2.3/input0
> Dec 28 03:49:25 Ebox3350 kernel: [43652.940824] usb 1-2.4: new full speed
> USB device using ehci_hcd and address 9
> Dec 28 03:49:25 Ebox3350 kernel: [43653.025405] usb 1-2.4: New USB device
> found, idVendor=067b, idProduct=2303
> Dec 28 03:49:25 Ebox3350 kernel: [43653.025428] usb 1-2.4: New USB device
> strings: Mfr=1, Product=2, SerialNumber=0
> Dec 28 03:49:25 Ebox3350 kernel: [43653.025446] usb 1-2.4: Product:
> USB-Serial Controller D
> Dec 28 03:49:25 Ebox3350 kernel: [43653.025460] usb 1-2.4: Manufacturer:
> Prolific Technology Inc.
> Dec 28 03:49:25 Ebox3350 kernel: [43653.031091] *pl2303 1-2.4:1.0: pl2303
> converter detected*
> Dec 28 03:49:25 Ebox3350 kernel: [43653.034439] *usb 1-2.4: pl2303
> converter now attached to ttyUSB1*
> Dec 28 03:49:25 Ebox3350 kernel: [43653.119773] usb 1-2.3: input irq
> status -75  received
> Dec 28 03:49:26 Ebox3350 modem-manager: (ttyUSB1) opening serial device...
> Dec 28 03:49:26 Ebox3350 modem-manager: (ttyUSB1): probe requested by
> plugin 'Generic'
> Dec 28 03:49:29 Ebox3350 kernel: [43656.783741] usb 1-2.3: input irq
> status -75  received
> Dec 28 03:49:34 Ebox3350 kernel: [43661.911701] usb 1-2.3: input irq
> status -75  received
> Dec 28 03:49:38 Ebox3350 modem-manager: (ttyUSB1) closing serial device...
>
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