Re: REGRESSION 3.14 i915 warning & mouse cursor vanishing

From: Keith Packard <keithp@keithp.com>
To: Steven Noonan <steven@uplinklabs.net>,
	linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
	David Airlie <airlied@linux.ie>
Subject: Re: REGRESSION 3.14 i915 warning & mouse cursor vanishing
Date: Mon, 14 Apr 2014 11:35:05 -0700	[thread overview]
Message-ID: <867g6ryd2e.fsf@hiro.keithp.com> (raw)
In-Reply-To: <20140414164010.GA1019@falcon>

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Steven Noonan <steven@uplinklabs.net> writes:

> Was using my machine normally, then my mouse cursor vanished. After switching
> to a VT and back to X11, my cursor came back. But I did notice a nasty trace in
> dmesg (below).

I don't think the trace below is related to the cursor disappearing.

I found a pair of bugs (one in the intel driver, one in the X server)
which can cause cursor disappearances. I just sent an intel driver patch
to the intel-gfx list with the subject:

        [PATCH] load_cursor_argb is supposed to return a Bool, not void

I've posted the X server patch once, and will respond to some review
comments. Either is sufficient to get a cursor back, the intel driver
one means you get a working hardware cursor again, rather than using a
software cursor by mistake.

-- 
keith.packard@intel.com

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