On Thu, Nov 29, 2018 at 12:21:31AM +0100, Karol Herbst wrote: > this was already debugged and there is no point in searching inside > the Firmware. It's not a firmware bug or anything. > > The proper fix is to do something inside Nouveau so that we don't > upset the device and being able to runtime resume it again. > > The initial thing we do inside Nouveau to cause those issues is to run > that so called "DEVINIT" script inside the vbios to initialize the > GPU, problem is, it changes something on the PCIe configuration so > that the GPU isn't able to runtime resume anymore. I am in contact > with Nvidia about that issue and hopefully we get the proper answers. > When I was digging into that myself I was able to make the situation > more stable by setting the PCIE link speed to the boot defaults, but > that was still pretty unstable. > > Anyway, because the binary driver fails here as well (through > bumblebee and so on) there isn't much of reverse engineering we can do > besides guessing and trying it on literally every hardware until it > works. > > We also have an upstream bug for this issue: > https://bugzilla.kernel.org/show_bug.cgi?id=156341 If you like I can probably dump the pcie registers on card and/or the pcie port under windows. The card works there :) Let me know. -- MST
