linux-kernel - Re: linux-next: Tree for Aug 13 [ screen corruption in graphical mode ]

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Message-ID: <CA+icZUUrJt_sJqp0CNMuM_b36tvv_rUskegLY5zcnm0w+JcW5Q@mail.gmail.com>
Date:	Tue, 13 Aug 2013 11:35:53 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>,
	Sedat Dilek <sedat.dilek@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Dave Airlie <airlied@...il.com>,
	DRI <dri-devel@...ts.freedesktop.org>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Cc:	"s.dilek" <s.dilek@...erlin.de>
Subject: Re: linux-next: Tree for Aug 13 [ screen corruption in graphical mode ]

On Tue, Aug 13, 2013 at 11:25 AM, Chris Wilson <chris@...is-wilson.co.uk> wrote:
> On Tue, Aug 13, 2013 at 11:10:18AM +0200, Sedat Dilek wrote:
>> Hi,
>>
>> with today's next-20130813 I cannot see 1/10 of my desktop-screen's
>> top, it's simply black.
>> I can estimate the URL line in Firefox (or open a new tab blindly and
>> get a known URL from my autocompleted history).
>
> Can you attach a photograph?
>

It's a black bar on the top of my desktop-screen - approx. 1/10.

It looks like this is also in the VT on bootup before entering LightDM.

>> My Xorg stack did not change: libdrm-2.4.46 | mesa-9.16 | intel-ddx-2.4.14.
>> next-20130808 was OK - no screen corruptions.
>>
>> Any idea, hint?
>
> Can you please try:
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index af1b2f0..b0f181d 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -1837,7 +1837,7 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
>                 break;
>         case I915_TILING_X:
>                 /* pin() will align the object as required by fence */
> -               alignment = 0;
> +               alignment = 256 * 1024;
>                 break;
>         case I915_TILING_Y:
>                 /* Despite that we check this in framebuffer_init userspace can
>
> --

NO, that did not help.

After a logout from my "BROKEN" Unity-2D session - the login-screen
for LightDM seems to be OK.
Then entering my Unity-2D desktop is OK - no screen corruptions.

- Sedat -
--
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