[Nouveau] [Bug 94725] Nouveau driver fails to poweron GPU on GM204 after dynamic poweroff

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94725

--- Comment #24 from Peter Wu <peter at lekensteyn.nl> ---
@Efrem Your issue occurs with completely different (desktop) hardware. Please
file a new bug.

(In reply to Rashed Abdel-Tawab from comment #17)
> Created attachment 122747 [details]
> new dmesg during hang
> 
> I decided to keep testing this in case we missed something, and running lshw
> twice in a row causes it to hang. I'm not sure what's up with it so I've
> attached the dmesg. It looks pretty similar to before, but that doesn't make
> sense since Alexandre patched the original problem.

Chris Wilson reported a similar trace for an Acer Aspire VN7-791G.
https://lists.freedesktop.org/archives/nouveau/2016-July/025602.html

I found ACPI information in the BIOS firmware for your laptop from
https://us.msi.com/Laptop/GS60-Ghost-Pro-4K-6th-Gen-GTX-970M.html
It could be the same PCI problem that I and Tobias are experiencing, except
that our laptops hang in ACPI while Rashed's firmware does not check the PCIe
link status in the ACPI firmware. Still digging...

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