[Bug 109376] FIFO underrun, visual glitches and instability with dual monitors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109376

Ville Syrjala <ville.syrjala at linux.intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #7 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
We seem to have fixed the original issue so I'm tempted to just close this bug.

However it might be interesting to know whether 4.19 and 4.20 are also
affected. 4.18 is a lost cause since it's no longer maintained, but we might
want to backport some of the fixes to 4.19 and 4.20. Can you test with
4.19/4.20?

In relation to bug 109248 Canonical identified commit ff43bc379e16 ("drm/i915:
Move ddb/wm programming into plane update/disable hooks on skl+") as fixing
their flickering screen problems. We might be after the same thing here.

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