[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 #18 from Jonas Nordlund <jonas.nordlund at gmail.com> ---
Is this perhaps bug 94990?

I also own an NVIDIA GTX 970 (Asus) and I can see the Gigabyte G1 Gaming GTX970
also has 4 GB VRAM. The problem here could be that NVIDIA made a controversial
decision in making 3.5 GB VRAM full speed, but a special, subpar configuration
for the remaining 0.5 GB making it approximately 7x slower than the "main"
VRAM.

And noveau doesn't support this.

There are some tries with a hack in the bug above to have nouveau only use the
initial 3.5 GB but I don't think it was successful yet as of April 2017.

It's too bad because it cripples the GTX 970 on most Linux distros, leaving one
with the remaining option to add the nomodeset option to the Linux boot options
to get an initial low resolution unaccelerated boot, and while running that,
blacklisting the nouveau driver and then finally installing the proprietary
NVIDIA driver. A reboot after this, and it will (should) work with the caveat
that caution is necessary with proprietary drivers and Kernel updates
especially if using so called "rolling release" distros.

I'm still having my hopes up for a fix! Would be the single most useful fix for
the past two years for me.

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