Uwatec Smart Com

[Jef Driesen]

On 14-04-13 21:46, Salvador Cuñat wrote:
> On Sat, Apr 13, 2013 at 10:25:20PM +0200, himura.kenshin at libero.it wrote:
>> then I get the message "Unable to open Uwatec Smart Com (/dev/ttyUSB0)". I'm
>>
>> Results of dmesg
>>
>> [46137.144980] usb 1-6: new high-speed USB device number 9 using ehci_hcd
>> [46137.307259] IRDA-USB found at address 9, Vendor: 66f, Product: 4210
>> [46137.307839] irda_usb_parse_endpoints(), And our endpoints are : in=02,
>> out=01 (512), int=00[46137.346415] irda_usb_init_qos(), dongle says
>> speed=0x17F, size=0x20, window=0x8, bofs=0x80, turn=0x4[46137.347530] IrDA:
>> Registered device irda0[46137.349860] STIR421X: Couldn't upload patch
>> [46137.384419] irda-usb: probe of 1-6:1.0 failed with error -2[46137.384452] ir-
>> usb 1-6:1.0: IR Dongle converter detected[46137.384749] usb 1-6: IR Dongle
>> converter now attached to ttyUSB0
>>
> It may also be a permissions problem (as I'd recently suffered with
> debian-weezy, and got resolved in the last  debian upgrade).
>
> If Dirk's solution doesn't work give a try to:
>
>     #chmod a+rw /dev/ttyUSB0      (as root)
>
> If it works after this, you have to get permissions for the next
> sessions, usually including your user in the group which ubuntu assigns
> to the device.

The IrDA communication uses the socket api. So there are no device nodes that 
can have wrong permissions.

I didn't notice this message regarding the ttyUSB0 originally. I wonder if this 
is maybe the problem? If the IR dongle is tied to this device node (no idea how 
that happened), then maybe it can't be accessed by the socket interface at the 
same time?

Jef