[Nouveau] [Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #7 from Ilia Mirkin <imirkin at alum.mit.edu> ---
errrr what?

[   12.163791] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x61d804 [ IBUS ]
[   26.237760] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x61a804 [ IBUS ]

That'd be PDISPLAY.SOR[0x3].PWR and PDISPLAY.DAC[0x1].DPMS_CTRL for those
following at home.

No idea what we're (not) doing to make those mmio reads fail. As they're
connected to "power", perhaps they're getting turned off for our convenience?
Not sure.

Perhaps it just doesn't have a SOR[3]/DAC[1]? Can you include your VBIOS,
perhaps there's something interesting in there? From a successful boot, grab
/sys/kernel/debug/dri/0/vbios.rom and upload it here.

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