[juneau-lug] Re: losing permissions
- From: Jamie <jamie@xxxxxxxxxxxxxxxxx>
- To: juneau-lug@xxxxxxxxxxxxx
- Date: Thu, 27 Feb 2014 15:27:33 -0900
Thanks Kevin, but no hub and no difference when swapping ports.
On 02/27/2014 11:40 AM, Kevin Miller wrote:
> Are you running it through a hub? If so, can you do w/o?
> Have you tried swapping USB ports?
>
> ...Kevin
> --
> Kevin Miller
> Network/email Administrator, CBJ MIS Dept.
> 155 South Seward Street
> Juneau, Alaska 99801
> Phone: (907) 586-0242, Fax: (907) 586-4500
> Registered Linux User No: 307357
>
> -----Original Message-----
> From: juneau-lug-bounce@xxxxxxxxxxxxx
> [mailto:juneau-lug-bounce@xxxxxxxxxxxxx] On Behalf Of Jamie
> Sent: Thursday, February 27, 2014 11:28 AM
> To: juneau-lug@xxxxxxxxxxxxx
> Subject: [juneau-lug] losing permissions
>
> Kevin may be interested to know that his old Shuttle is still in running and
> providing support for my remote weather station. This La Crosse
> 2316 weather station connects via ttyUSB0.
>
> The problem: for unknown reasons the device periodically disconnects (see log
> below) and when it re-connects it has lost its elevated permissions and fails
> to upload the data. It did it again today. I logged in and did a "sudo
> chmod 766 /dev/ttyUSB0 " & it's back up and working. It just started doing
> this a month or so ago and this is the third time.
>
> 1) Why is it doing this?
>
> 2) How do I prevent it?
>
> My previous attempt at creating a udev rule to set permissions was
> unsuccessful. It has always lost elevated permissions when re-booting.
> In my latest attempt just now I added the line:
> KERNEL="ttyUSB[0-9]*", GROUP="dialout", MODE="0766", ENV{GENERATED}="1"
> to the file:
> /etc/udev/rules.d/91-persistent-weather-usb.rules
>
> Does this seem right? Thanks for any help.
> -Jamie
>
> Log:
> Feb 27 08:44:13 Hig01 kernel: [1448796.824052] hub 2-0:1.0: port 1 disabled
> by hub (EMI?), re-enabling...
> Feb 27 08:44:13 Hig01 kernel: [1448796.824137] usb 2-1: USB disconnect,
> device number 4 Feb 27 08:44:13 Hig01 kernel: [1448796.824367] ftdi_sio
> ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 Feb
> 27 08:44:13 Hig01 kernel: [1448796.824395] ftdi_sio 2-1:1.0: device
> disconnected Feb 27 08:44:13 Hig01 kernel: [1448797.064021] usb 2-1: new
> full-speed USB device number 5 using uhci_hcd Feb 27 08:44:13 Hig01 kernel:
> [1448797.242074] usb 2-1: New USB device found, idVendor=0403, idProduct=6001
> Feb 27 08:44:13 Hig01 kernel: [1448797.242082] usb 2-1: New USB device
> strings: Mfr=1, Product=2, SerialNumber=0 Feb 27 08:44:13 Hig01 kernel:
> [1448797.242088] usb 2-1: Product: USB <-> Serial Feb 27 08:44:13 Hig01
> kernel: [1448797.242092] usb 2-1: Manufacturer: FTDI Feb 27 08:44:13 Hig01
> kernel: [1448797.248147] ftdi_sio 2-1:1.0: FTDI USB Serial Device converter
> detected Feb 27 08:44:13 Hig01 kernel: [1448797.248199] usb 2-1: Detected
> FT232BM Feb 27 08:44:13 Hig01 kernel: [1448797.248204] usb 2-1: Number of
> endpoints 2 Feb 27 08:44:13 Hig01 kernel: [1448797.248208] usb 2-1: Endpoint
> 1 MaxPacketSize 64 Feb 27 08:44:13 Hig01 kernel: [1448797.248212] usb 2-1:
> Endpoint 2 MaxPacketSize 64 Feb 27 08:44:13 Hig01 kernel: [1448797.248216]
> usb 2-1: Setting MaxPacketSize 64 Feb 27 08:44:13 Hig01 kernel:
> [1448797.250205] usb 2-1: FTDI USB Serial Device converter now attached to
> ttyUSB0
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