[Nouveau] [Bug 97620] [REGRESSION] KMS having issues after kernel upgrade (4.5.1-1 to 4.6.4-1)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97620

--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Luke Tidd from comment #11)
> # first bad commit: [a6a0f67ca7aae2e6bec7ebf55d1e4853dc220816]
> drm/nouveau/devinit/gf100-: detect if BIOS invoked devinit

That's interesting. It either used to run init tables and now doesn't, or
conversely didn't use to and now does.

Would you mind running a "working" kernel with nouveau.debug=debug and see if
it ever says "bios: running init tables"? If it does, you can probably make the
new kernels work by adding nouveau.config=NvForcePost=1 . If it previously
didn't run the tables and now does, there's no config-line way of overriding
it.

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