[Nouveau] [Bug 89664] Nouveau fails to enter KMS with the Gigabyte G1 Gaming GTX970

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89664

--- Comment #22 from Mikołaj Świątek <mikolaj.swiatek at gmail.com> ---
I think I'm suffering from the same bug, though I've only been able to
experience it after the VRAM detection problem was fixed in 4.12.

I have a MSI GTX 970 4GB feeding two 1080p monitors - one via HDMI and one via
DP.  
With kernel 4.12-rc1, and a single monitor connected, everything works fine, on
both monitors individually. However, when I try to boot with both connected at
the same time, I get corrupted output similar to what Omar described - a
coloured stripe at the top of the screen, and what looks like garbled text
below it. Output only appears on one monitor, second stays in standby mode.
This happens irrespective of whether I boot straight into X or single-user
mode. None of the nouveau.config options mentioned do anything different than
what Omar reported.

I have some logs captured with nouveau.debug=debug, and can upload them if
needed.

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