As somebody who's abused the hell out of pcie extenders (I have over three
meters of pcie-over-cheap-usb3.0-cable in one box) I've never had an
obvious issue so it seems pretty tolerant. You probably just won't get the
same transfer speed.
I would check if any drives you have show up as being attached to pcie
instead of sata when in that slot.
Also double check it's keying. If the keying of the slot is such that it
can't even accept an nvme drive, then there's your answer right there.
Sincerely,
-Matt
On Sun, Dec 8, 2019 at 6:12 PM Rafael Send <flyingfishfin...@gmail.com>
wrote:
> Hey,
> I used the mini PCIe -> x1PCIe version with the same cable length from the
> same people to test the card in the WiFi slot successfully, so I doubt that
> it is a signal integrity problem.
>
> I'll try to build against coreboot master on Monday and see what happens.
>
> How can I get the sort of logs that would help here out of coreboot?
> I'll be building with Tianocore.
>
> Cheers,
> Rafael
>
> On Sat, Dec 7, 2019, 04:58 Nico Huber <nic...@gmx.de> wrote:
>
>> Hi Rafael,
>>
>> On 07.12.19 07:40, Rafael Send wrote:
>> > However, so far nothing I've done lets me detect the Sunix card if I
>> try to
>> > put it in the NVME slot using this adapter
>> > <https://www.adt.link/product/R42.html>. I would think it should just
>> show
>> > up under "lspci" like it does in the WiFi slot, but it does not.
>>
>> have you tried the adapter with another device yet? Though, even if it
>> did work, from above link:
>>
>> "1. All kinds of Motherboard and equipment condition such as signal
>> driving ability is different, the results of our test does not
>> guarantee that it is the same as your test results. You need to
>> know, as long as using a extension cable, the signal will have a
>> loss. The buyer who requires perfectly, please don't buy."
>>
>> So they know, that board design matters for the compatibility of their
>> adapter. I'm a mere software developer, so could be totally wrong about
>> this: PCIe rates are now that high that the trace length between chips
>> can get longer than a wavelength. Doesn't mean it can't work, but there
>> may be things to take special care of and I don't know if regular PCIe
>> ports are prepared for it. In other words, lightspeed might be too slow
>> to make things like this plug'n'play :D
>>
>> > I have not tried the latest Coreboot / port yet, but I figured I might
>> as
>> > well get some opinions on the subject.
>>
>> Still worth a shot, imho. You never know what a proprietary BIOS does.
>> And even if it doesn't work, coreboot logs can give some insight.
>>
>> Nico
>>
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