[Nouveau] [Bug 90682] [NVE6] failed to idle channel 0xcccc0001 + crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90682

--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
All of those screens are attached to intel. I can't think of a reason why you
would have lost your DP screens.

However it seems like your eDP panel is actively attached to *both* the intel
*and* the nvidia adapters. Yeah, *that*'ll work great. Ugh. There also appears
to be a DVI-D output, which may or may not be real.

I wonder if that's the cause of the trouble. It seems like intel is allocating
its outputs second, so the first eDP screen goes to nouveau. But presumably
nouveau is card1 while intel is card0.

Double-check with

grep . /sys/class/drm/card*-*/status

I bet that there's a eDP-1 and eDP-2, and that eDP-2 is on the card that all
the other useful ones are on. In that case, try booting with

video=eDP-1:d

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