linux-kernel - Re: [Intel-gfx] [BUG, bisect] drm/i915: mouse pointer lags and overshoots

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Message-ID: <20150119110404.GA26577@nuc-i3427.alporthouse.com>
Date:	Mon, 19 Jan 2015 11:04:04 +0000
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Daniel Vetter <daniel.vetter@...el.com>
Cc:	Ville Syrjälä 
	<ville.syrjala@...ux.intel.com>,
	Jeremiah Mahler <jmmahler@...il.com>,
	Matt Roper <matthew.d.roper@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	Alex Deucher <alexander.deucher@....com>,
	Dave Airlie <airlied@...hat.com>,
	Ander Conselvan de Oliveira <conselvan2@...il.com>,
	linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [Intel-gfx] [BUG, bisect] drm/i915: mouse pointer lags and
 overshoots

On Mon, Jan 19, 2015 at 11:51:43AM +0100, Daniel Vetter wrote:
> There's also an issue in (most) X drivers which exaberates this
> issues: When changing the cursor buffer the X cursor code does a a)
> disable cursor b) update cursor image c) enable cursor cycle.

Notably not -intel on which the bug has been observed. And more
importantly, the slow downs don't seem to correlate with cursor change,
just cursor movement.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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