Uwatec Smart Z data download takes 1.5 hours for only 4 dives

Jef Driesen jefdriesen at telenet.be
Sat Dec 28 10:46:38 UTC 2013

According to the info I got from Sape, it's indeed the SigmaTel STIR4200 driver.

I believe the official Uwatec dongle is either a MosChip MCS7780 or SigmaTel 
4210 chipset. Those are also the only chipsets supported by JTrak (= one of the 
official Uwatec applications) on Mac OS X, which lacks IrDA support and thus 
needs a user-space driver.

On 28-12-13 19:03, Linus Torvalds wrote:
> It's using the stir4200 driver, isn't it? That seems to be the most common
> USB to irda bridge chip.
> I'll see if I can find anything. I need a device that does bulk irda
> transfers too, if course. I'll be back home on Monday and try to find
> something at Fry's...
>        Linus
> On Dec 28, 2013 9:52 AM, "Linus Torvalds" <torvalds at linux-foundation.org>
> wrote:
>> Sape, what irda dongle are you using? Is it something that came with the
>> uwatek, or some separate one? If I can find anything, I'd better try to get
>> something halfway relevant..
>>         Linus
>> On Dec 28, 2013 9:48 AM, "Linus Torvalds" <torvalds at linux-foundation.org>
>> wrote:
>>> On Dec 28, 2013 7:47 AM, "Dirk Hohndel" <dirk at hohndel.org> wrote:
>>>> Linus, any idea why a two year old kernel would be more than 4 times
>>>> faster? This is with an irda connection...
>>> Nobody same uses irda any more (and it wasn't exactly common before
>>> either). So it gets no testing and likely bitrots.
>>> Is there any hardware that people can think of that does irda that I
>>> could easily pick up somewhere and I might test with. Not necessarily a
>>> dive computer...
>>>        Linus
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