[Nouveau] [Bug 61537] Screen flicker when using display with incorrect EDID

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61537

--- Comment #3 from Emil Velikov <emil.l.velikov at gmail.com> ---
A bit of a (hopefully useful) information

 - Whenever drm_kms_helper.poll is disabled, your vga monitor won't get
automatically detected when it's not plugged in at boot.

 - Iirc there are two modes when querying for info via the xrandr protocol -
use cached one or re-probe. 

 - Original nv50 (and earlier?) hardware the blob does a plain sleep/udelay
between setup and probe, while for nv92 and latter it uses a more elaborate
approach (see bug 67382, comment 34). Currently nouveau uses the former method
which contributes (not sure to what extend) to the flicker.

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