Evening!Alright so I built against the latest master, enabled all the root ports (0-12), disabled the NVME (root port 8)? for good measure (although I also tried with it remaining enabled).I still don't see the device under either "pci" in the EFI shell or under "lspci" once Ubuntu is booted.I don't have any other PCI cards that I could test here, unfortunately.How shall I go about debugging this further? Can I get logs out of coreboot somehow?Cheers,RafaelOn Sun, Dec 8, 2019 at 7:53 PM Rafael Send <flyingfishfinger@gmail.com> wrote:Hi,It's an M-key slot and I'm currently running an XPG SX8200 Pro in it right now, so it's definitely got x4 PCIe...ROn Sun, Dec 8, 2019, 15:25 Matt B <matthewwbradley6@gmail.com> wrote: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,-MattOn Sun, Dec 8, 2019 at 6:12 PM Rafael Send <flyingfishfinger@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 <nico.h@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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