[Bug 83101] [dri3] delayed rendering of text under gnome-shell

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83101

--- Comment #11 from Julian Andres Klode <jak at jak-linux.org> ---
(In reply to comment #10)
> Your hardware doesn't support rc6+ or rc6++, so please don't use anything
> other than rc6=1 (we allow it for testing, but the hardware has not been
> validated for those modes). fbc=1 has a number of known issues, that
> includes a deadlock when changing outputs (so caveat lector). lvds_downclock
> depends upon having a downclock mode available and may cause
> flickering/headaches.

RC6+ is enabled by default already. Booting on kernel without any i915 options
gives:

Aug 26 17:18:49 jak-x230 kernel: [drm] Enabling RC6 states: RC6 on, RC6p on,
RC6pp off

But apart from I just noticed that the kernel parameters do not work anymore
anyway, since the i915_ prefix was dropped, so they are ignored currently. So I
guess I'll just drop the options now since I did not use them recently anyway.

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