Failed to receive the answer (from Suunto Vyper Air)

Amit Chaudhuri amit.k.chaudhuri at
Tue Jun 19 00:39:17 PDT 2012

Hi all,

I get the followiing error report from the command line when attempting
Log, Import on my Suunto Vyper Air.

Device name is /dev/ttyUSB0 and it reports permissions crw-rw---- 1 root
dialout 188, 0 <date here>

Error message is:

suunto_vyper2.c:193: Failed to receive the answer.
suunto_common2.c:252: Cannot read memory header.

I am a member of group dialout.

The dive computer does work with SuuntoDM4 software.

dmesg shows reports such as usbcore: registered new interface driver
ftdi_sio & usb 2-2: Setting MaxPacketSize 64 & FTDI USB Serial Device
converter now attached to ttyUSB0.

Appreciate any help getting past this.

I am running openSUSE 12.1 (x86_64) with the following software confirmed
in place (wasn't 100% sure about the reference to glib-2.0 in the
installation advice; but I have installed glib2-devel and saw no complaints
when building).

   - libxml2-devel [2.7.8+git20110708-3.8.1]
   - gtk2-devel [2.24.7-2.5.1
   - glib-2.0 [if this means glib2-devel then 2.30.1-2.1.2]
   - gconf2-devel {addded 3.2.0-2.2.2}

Both libdivecomputer & subsurface are taken from git per the installation
instructions yesterday.


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