Comment 105 for bug 1803179

(In reply to Maik Freudenberg from comment #96)
> If I understand correctly, that patch only applies to Pascal, any reason to
> leave Maxwell out?

it also affects maxwell, but we had the PCIe stuff already wired up there, just not for Pascal.
The more important part of that patch is the nvkm_pcie_fini function which gets called before runtime suspending the GPU.

> In my case LNKS/TREN/LNKD worked on the config space of the upstream port,
> namely
> 00:01.1 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor
> PCI Express x8 Controller (rev 06)
> and not the GPU.

oh, I see. But in any case, if the upstream port <-> GPU communication is broken, we can't rely on anything. And this was the situation I noticed on my machine.

I am mainly interested if setting the PCIe link to the "default" state from the GPU perspective is a working workaround and my hope is, that this will also give us better insights on what the real cause is.