[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 #30 from rmokkink <rob at mokkinksystems.com> ---
Hi,

I have the same problems with my new MSI GP62 6QF laptop.
It has a geforce gtx960m videocard. I installed fedora 25 on it. The only way
to login into the system (gnome) was to disable the nouveau powermanagement
with grub option nouveau.runpm=0.

I did manage to login into the system with option:
acpi_osi=! "acpi_os=Windows 2013"

In /sys/kernel/debug/vgaswitcheroo/switch is see the following:
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0

But it looks like it is not working properly, i see the red light on the power
button, meaning the other card is active as well.

I also tried the option:

i915.modeset=-1 nouveau.runpm=-1, occasionally i can login, but the the system
freezes completely.

It this a kernel bug or nouveau bug?

Thanks.

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